Relevant bibliographies by topics / Molecules - Magnetic properties

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Molecules - Magnetic properties'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Molecules - Magnetic properties"

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Tyagi, Pawan, Christopher D'Angelo, and Collin Baker. "Monte Carlo and Experimental Magnetic Studies of Molecular Spintronics Devices." Nano 10, no. 04 (June 2015): 1550056. http://dx.doi.org/10.1142/s1793292015500563.

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Molecule-based spintronics devices (MSDs) are highly promising candidates for discovering advanced logic and memory computer units. An advanced MSD will require the placement of paramagnetic molecules between the two ferromagnetic (FM) electrodes. Due to extreme fabrication challenges, only a couple of experimental studies could be performed to understand the effect of magnetic molecules on the overall magnetic and transport properties of MSDs. To date, theoretical studies mainly focused on charge and spin transport aspects of MSDs; there is a dearth of knowledge about the effect of magnetic molecules on the magnetic properties of MSDs. This paper investigates the effect of magnetic molecules, with a net spin, on the magnetic properties of 2D MSDs via Monte Carlo (MC) simulations. Our MC simulations encompass a wide range of MSDs that can be realized by establishing different kinds of magnetic interactions between molecules and FM electrodes at different temperatures. The MC simulations show that ambient thermal energy strongly influenced the molecular coupling effect on the MSD. We studied the nature and strength of molecule couplings (FM and antiferromagnetic) with the two electrodes on the magnetization, specific heat and magnetic susceptibility of MSDs. For the case when the nature of molecule interaction was FM with one electrode and antiferromagnetic with another electrode the overall magnetization shifted toward zero. In this case, the effect of molecules was also a strong function of the nature and strength of direct coupling between FM electrodes. In the case when molecules make opposite magnetic couplings with the two FM electrodes, the MSD model used for MC studies resembled with the magnetic tunnel junction based MSD. The experimental magnetic studies on these devices are in agreement with our theoretical MC simulations results. Our MC simulations will enable the fundamental understanding and designing of a wide range of novel spintronics devices utilizing a variety of molecules, nanoclusters and quantum dots as the device elements.
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Zlatanova, Jordanka, and Sanford H. Leuba. "Magnetic tweezers: a sensitive tool to study DNA and chromatin at the single-molecule level." Biochemistry and Cell Biology 81, no. 3 (June 1, 2003): 151–59. http://dx.doi.org/10.1139/o03-048.

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The advent of single-molecule biology has allowed unprecedented insight into the dynamic behavior of biological macromolecules and their complexes. Unexpected properties, masked by the asynchronous behavior of myriads of molecules in bulk experiments, can be revealed; equally importantly, individual members of a molecular population often exhibit distinct features in their properties. Finally, the single-molecule approaches allow us to study the behavior of biological macromolecules under applied tension or torsion; understanding the mechanical properties of these molecules helps us understand how they function in the cell. In this review, we summarize the application of magnetic tweezers (MT) to the study of DNA behavior at the single-molecule level. MT can be conveniently used to stretch DNA and introduce controlled levels of superhelicity into the molecule and to follow to a high definition the action of different types of topoisomerases. Its potential for chromatin studies is also enormous, and we will briefly present our first chromatin results.Key words: single-molecules, chromatin, topoisomerases, magnetic tweezers, force.
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Bader, Richard F. W., and Todd A. Keith. "Properties of atoms in molecules: Magnetic susceptibilities." Journal of Chemical Physics 99, no. 5 (September 1993): 3683–93. http://dx.doi.org/10.1063/1.466166.

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Schnack, Jürgen. "Frustration-induced exotic properties of magnetic molecules." Comptes Rendus Chimie 10, no. 1-2 (January 2007): 15–20. http://dx.doi.org/10.1016/j.crci.2006.07.010.

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Holmberg, Rebecca J., and Muralee Murugesu. "Adhering magnetic molecules to surfaces." Journal of Materials Chemistry C 3, no. 46 (2015): 11986–98. http://dx.doi.org/10.1039/c5tc03225c.

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In this review we aim to present an overview of the work that has been performed on attaching and studying Single-Molecule Magnets (SMMs) on various surfaces, with an emphasis on molecular design for surface interaction and on the magnetic properties before and after adhesion occurs.
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Lebedev, A. V. "Coagulation properties of a magnetic fluid stabilized with polydimethylsiloxane." Вестник Пермского университета. Физика, no. 4 (2020): 5–8. http://dx.doi.org/10.17072/1994-3598-2020-4-05-08.

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The stability of a stabilized with polydimethylsiloxane (PDMS) magnetic fluid to alcohols of a saturated homologous series was investigated. We used alcohols with a linear molecular structure and their possible isomers. It was found that the solubility of the PDMS stabilized particles strongly depends on the length of the coagulant molecules and, quite unexpectedly, on the degree of isomerization. The first tested coagulants, ethanol and acetone, did not mix with PDMS stabilized magnetic fluid. The next member of the homologous series, linear propanol, is an effective coagulant that causes a sharp precipitation of particles. Meanwhile, with isopropanol, coagulation occurs very smoothly. The butanol isomers differ even more. Normal butanol causes the liquid to coagulate at a higher concentration than propanol. Whereas tert-butanol is mixed with PDMS stabilized magnetic fluid in any proportion. The last linear alcohol in the homologous series that can serve as a coagulant is hexanol-1. The next members of the homologous series no longer mix with the PDMS stabilized magnetic fluid. This is typical only for linear molecules. For example, 2ethylhexanol (isooctanol) perfectly dissolves PDMS stabilized particles. This property can be used to separate mixtures of isomers and linear molecules.
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Keith, T. A., and R. F. W. Bader. "Properties of atoms in molecules: nuclear magnetic shielding." Canadian Journal of Chemistry 74, no. 2 (February 1, 1996): 185–200. http://dx.doi.org/10.1139/v96-022.

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This paper analyzes the nuclear magnetic shielding tensors underlying the chemical shift in NMR spectroscopy in terms of the field generated at the nucleus by the current J(1)(r) induced by an external magnetic field. The magnetic field at nucleus [Formula: see text] resulting from an element of the induced current density at a distance [Formula: see text] is proportional to [Formula: see text] which defines the shielding density [Formula: see text] The magnetic shielding of a nucleus is fundamentally an atomic property, a feature brought to the fore by using the theory of atoms in molecules and the integration of [Formula: see text] over the individual atomic basins relates the shielding tensor [Formula: see text] to a sum of atomic contributions. The shielding of nucleus ** is primarily determined by the flow of current within the basin of atom [Formula: see text], a contribution that varies from the approximate diamagnetic limit, given by the atomic Lamb value for the atom in the molecule, to values that are greatly reduced by the presence of paramagnetic current flows associated with particular bonding effects. Whether the contribution of a neighbouring atom is shielding or deshielding is readily understood by relating the form of the current flow within its basin to the magnetization density. [Formula: see text]. A study of the currents induced in benzene shows that the extent to which a proton, bonded to a ring of atoms, is deshielded by the field exerted by its bonded neighbour provides a direct diagnostic test for a ring current and an accurate relative measure of its strength. The theory of atoms in molecules isolates transferable atomic properties and because of this ability one finds, in addition to the anticipated result that a given functional group contributes identical amounts to the isotropic shielding [Formula: see text] of a nucleus external to it through a series of molecules, the more remarkable result that the whole of the variation in [Formula: see text] can have its origin in the basin of atom [Formula: see text], the contribution from external groups remaining constant. For example, the external contribution to [Formula: see text] for a carbon nucleus in a normal hydrocarbon is independent of chain length and position of [Formula: see text] within the chain, the methyl group in ethane contributing the same shielding to a methyl carbon as does the butyl group in pentane. This constancy in external contributions to the shielding is also found for N, O and F nuclei in substituted, saturated hydrocarbons. Key words: NMR, magnetic shielding, current density, magnetic shielding density.
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Naaman, Ron, and Zeev Vager. "Cooperative Electronic and Magnetic Properties of Self-Assembled Monolayers." MRS Bulletin 35, no. 6 (June 2010): 429–34. http://dx.doi.org/10.1557/mrs2010.580.

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AbstractSelf-assembled monolayers (SAMs) of organic dipolar molecules have new electronic and magnetic properties that result from their organization, despite the relatively weak interaction among the molecules themselves. Here we review the origin of this cooperative effect and summarize work performed on spin selective electron transmission through SAMs. The spin selectivity observed, in some cases, is consistent with a model in which a SAM containing chiral dipolar molecules behaves like a magnetic layer. The magnetic properties result in the SAMs behaving as spin filters, even without applying an external magnetic field to the layer.
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DE LA VENTA, J., E. FERNANDEZ PINEL, M. A. GARCIA, P. CRESPO, A. HERNANDO, O. RODRIGUEZ DE LA FUENTE, C. DE JULIÁN FERNÁNDEZ, A. FERNÁNDEZ, and S. PENADÉS. "MAGNETIC PROPERTIES OF ORGANIC COATED GOLD SURFACES." Modern Physics Letters B 21, no. 06 (March 10, 2007): 303–19. http://dx.doi.org/10.1142/s0217984907012761.

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We review here our recent results of experimental observation of room temperature magnetism in gold nanoparticles (NPs) and thin films. Capping gold surfaces with certain organic molecules leads to the appearance of magnetism at room temperature. The surface bonds between the organic molecules and Au atoms give rise to magnetic moments. These magnetic moments are blocked along the bond direction showing huge anisotropy. In the case of atomically flat surfaces, the magnetic moments are giants. An explanation of this orbital ferromagnetism is given. These results point out the possibility to observe magnetism at nanoscale in materials without typical magnetic atoms (transition metals and rare earths), and are of fundamental value to understand the magnetic properties of surfaces.
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Mínguez Espallargas, Guillermo, Mónica Giménez-Marqués, Néstor Calvo Galve, and Eugenio Coronado. "Responsive magnetic coordination polymers: effects of gas sorption." Acta Crystallographica Section A Foundations and Advances 70, a1 (August 5, 2014): C905. http://dx.doi.org/10.1107/s2053273314090949.

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Responsive materials for which physical or chemical properties can be tuned by applying an external stimulus are attracting considerable interest in view of their potential applications as chemical switches or molecular sensors [1]. A major source of such materials is provided by the so-called metal-organic frameworks (MOFs), in which physisorption of guest molecules, located in the pores, can cause subtle changes which affect the magnetic properties. Here we present two different approaches to modify the magnetic properties through gas sorption. First, we show that the chemisorption of gaseous HCl molecules by a non-porous one-dimensional coordination polymer instigates drastic modifications in the magnetic properties of the material, switching from strong antiferromagnets to ferromagnets upon gas sorption [2]. These conversions result from profound structural changes, involving cleavage and formation of covalent bonds caused by the removal/addition of ligands from the framework itself, but with no disruption of crystallinity. In a different approach, we present a family of FeII coordination polymers which shows spin-crossover behaviour and selectively sorbs CO2 over N2 [3]. Despite the lack of permanent channels, these non-porous coordination polymers trap CO2 gas molecules into the internal cavities due to the flexible and dynamic nature of the framework. One CO2 molecule is incorporated in each internal cavity of the crystalline material, as unequivocally demonstrated by structural determination after CO2 loading. This physisorption shifts the spin transition producing an increase in the transition temperature of 9 K (see Figure).
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Dissertations / Theses on the topic "Molecules - Magnetic properties"

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Bennie, Simon. "Theoretical calculations of the magnetic properties of inorganic molecules." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/theoretical-calculations-of-the-magnetic-properties-of-inorganic-molecules(3070af2e-6621-4f03-a515-f1113fbcc537).html.

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The zero field splittings (ZFS) of inorganic molecules were studied with a view to understanding the applicability of new methods in Density Functional Theory (DFT). The initial thrust of this work was to benchmark the three methods available: Pederson Kahana, quasirestricted orbitals and the coupled perturbed equations. Simple 3d monometallic systems were studied with a unique focus on the effect of adjusting the basis set size of the metal. We also studied the effect of a range of commonly available functionals. We found that by using a large quadruple zeta basis set that the results of general gradient approximation (GGA) functionals can be improved. Hybrid functionals were found not to be as accurate as the GGAs and are often degraded by going to a larger basis. The degree of accuracy appears to be a function of the covalency of the metal to ligand bond as measured by the Mayer bond orders and Mulliken charges. We also present the results for complete active space self consistent field calculations and ZFS values for restricted open DFT determinants coupled with the multi-reference configuration interaction methods of obtaining the ZFS.Chapter 5 of this work focuses of the characterisation of a more complex di- chromium system called Kremer’s dimer. This system has three magnetically active spin states each of which has well-defined ZFS values. Under the broken symmetry method we found no functional to be able to qualitatively reproduce the ordering of the spin state or the ZFS. Through analysis of the natural orbitals and spin eigenvalues we determined that this is due to a strong amount of multi-configurational character. Simple complete active space self consistent field (CASSCF) calculations were found to reproduce the experimental spin ladder. Multi-reference configuration interaction on the CASSCF solutions were found to accurately calculate the experimental ZFS values, with state optimised calculations being the most accurate choice for the CASSCF.
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Hatter, Nino [Verfasser]. "Fundamental Properties of Molecules on Surfaces : Molecular Switching and Interaction of Magnetic Molecules with Superconductors / Nino Hatter." Berlin : Freie Universität Berlin, 2017. http://d-nb.info/1123572216/34.

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Chen, Xing. "Theoretical Studies on Magnetic and Photochemical Properties of Organic Molecules." Doctoral thesis, KTH, Teoretisk kemi och biologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-52818.

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The present thesis is concerned with the theoretical studies on magnetic and photochemical properties of organic molecules. The ab initio and first principles theories were employed to investigate the vibrational effects on the isotropic hyperfine coupling constant (HFCC) known as the critical parameter in electron paramagnetic resonance spectrum, the theoretical simulations of the vibronically resolved molecular spectra, the photo-induced reaction mechanism of α-santonin and the spin-forbidden reaction of triplet-state dioxygen with cofactor-free enzyme. The theoretical predictions shed light on the interpretation of experimental observations, the understanding of reaction mechanism, and importantly the guideline and perspective in respect of the popularized applications. We focused on the vibrational corrections to the isotropic HFCCs of hydrogen and carbon atoms in organic radicals. The calculations indicate that the vibrational contributions induce or enhance the effect of spin polarization. A set of rules were stated to guide experimentalist and theoretician in identification of the contributions from the molecular vibrations to HFCCs. And the coupling of spin density with vibrational modes in the backbone is significant and provides the insight into the spin density transfer mechanism in organic π radicals. The spectral characters of the intermediates in solid-state photoarrangement of α-santonin were investigated in order to well understand the underlying experimental spectra. The molecular spectra simulated with Franck-Condon principle show that the positions of the absorption and emission bands of photosantonic acid well match with the experimental observations and the absorption spectrum has a vibrationally resolved character. α-Santonin is the first found organic molecule that has the photoreaction activities. The photorearrangement mechanism is theoretically predicted that the low-lying excited state 1(nπ*) undergoing an intersystem crossing process decays to 3(ππ*) state in the Franck-Condon region. A pathway which is favored in the solid-state reaction requires less space and dynamic advantage on the excited-state potential energy surface (PES). And the other pathway is predominant in the weak polar solvent due to the thermodynamical and dynamical preferences. Lumisantonin is a critical intermediate derived from α-santonin photoreaction. The 3(ππ*) state plays a key role in lumisantonin photolysis. The photolytic pathway is in advantage of dynamics and thermodynamics on the triplet-state PES. In contrast, the other reaction pathway is facile for pyrolysis ascribed to a stable intermediate formed on the ground-state PES.  The mechanism of the oxidation reaction involving cofactor-free enzyme and triplet-state dioxygen were studied. The theoretical calculations show that the charge-transfer mechanism is not a sole way to make a spin-forbidden oxidation allowed. It is more likely to take place in the reactant consisting of a non-conjugated substrate. The other mechanism involving the surface hopping between the triplet- and singlet-state PESs via a minimum energy crossing point (MECP) without a significant charge migration. The electronic state of MECP exhibits a mixed characteristic of the singlet and triplet states. The enhanced conjugation of the substrate slows down the spin-flip rate, and this step can in fact control the rate of the reaction that a dioxygen attaches to a substrate.
QC 20111220
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Haque, Md Firoze H. "Single-electron transport spectroscopy studies of magnetic molecules and nanoparticles." Doctoral diss., University of Central Florida, 2011. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4914.

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Magnetic nanoparticles and molecules, in particular ferromagnetic noble metal nanoparticles, molecular magnet and single-molecule magnets (SMM), are perfect examples to investigate the role of quantum mechanics at the nanoscale. For example, SMMs are known to reverse their magnetization by quantum tunneling in the absence of thermal excitation and show a number of fundamental quantum mechanical manifestations, such as quantum interference effects. On the other hand, noble metal nanoparticles are found to behave ferromagnetically for diameters below a few nanometers. Some of these manifestations are still intriguing, and novel research approaches are necessary to advance towards a more complete understanding of these exciting nanoscale systems. In particular, the ability to study an isolated individual nanoscale system (i.e just one molecule or nanoparticle) is both challenging technologically and fundamentally essential. It is expected that accessing to the energy landscape of an isolated molecule/nanoparticle will allow unprecedented knowledge of the basic properties that are usually masked by collective phenomena when the systems are found in large ensembles or in their crystal form. Several approaches to this problem are currently under development by a number of research groups. For instance, some groups are developing deposition techniques to create patterned thin films of isolated magnetic nanoparticles and molecular magnets by means of optical lithography, low-energy laser ablation, or pulsed-laser evaporation or specific chemical functionalization of metallic surfaces with special molecular ligands. However, it is still a challenge to access the properties of an individual molecule or nanoparticle within a film or substrate. I have studied molecular nanomagnets and ferromagnetic noble metal nanoparticles by means of a novel experimental approach that mixes the chemical functionalization of nano-systems with the use of single-electron transistors (SETs). I have observed the Coulomb-blockade single-electron transport response through magnetic gold nanoparticles and single-molecule magnet. In particular, Coulomb-blockade response of a Mn[sub4]-based SET device recorded at 240 mK revealed the appearance of two diamonds (two charge states) with a clear switch between one and the other is indicative of a conformational switching of the molecule between two different states. The excitations inside the diamonds move with magnetic field. The curvature of the excitations and the fact of having them not going down to zero energy for zero magnetic field, indicated the presence of magnetic anisotropy (zero-field splitting) in the molecule. In addition, the high magnetic field slope of the excitations indicates that transitions between charge states differ by a net spin value equal to 9 (|ΔS| = 9), as expected from the behavior of Mn4 molecules in their crystalline form. Anticrossings between different excitations are indicative of quantum superpositions of the molecular states, which are observed for the first time in transport measurements through and individual SMM.
ID: 029810145; System requirements: World Wide Web browser and PDF reader.; Mode of access: World Wide Web.; Thesis (Ph.D.)--University of Central Florida, 2011.; Includes bibliographical references (p. 92-98).
Ph.D.
Doctorate
Physics
Sciences
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Hu, Jianming, and 胡建明. "Macroscopic quantum phenomenon in molecular magnets." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B26724674.

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Olegário, Raquel Maria. "Theoretical studies of electronic structure and magnetic properties of small molecules." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627171.

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Kahle, Steffen [Verfasser]. "Magnetic Properties of Individual Molecules Studied by Scanning Tunneling Microscopy / Steffen Kahle." Konstanz : Bibliothek der Universität Konstanz, 2013. http://d-nb.info/1045154156/34.

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Fukuda, Ryoichi. "Relativistic quantum chemistry for the magnetic properties of molecules including heavy elements." 京都大学 (Kyoto University), 2003. http://hdl.handle.net/2433/148843.

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Warner, B. "Engineering the properties of magnetic molecules through the interaction with the surface." Thesis, University College London (University of London), 2014. http://discovery.ucl.ac.uk/1455711/.

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The drive to continue Moore’s Law by shrinking electrical components down to the ultimate limit has led to a great deal of interest in atomic and molecular-scale electronics, in which individual atoms and molecules can be used as circuit elements. More recent proposals also seek to exploit the magnetic properties of these nanoscale objects in new applications in information technology and spintronics. In typical device geometries, the magnetic element is coupled to electrical leads, and these interactions can strongly affect the properties of the quantum system. Using scanning tunneling microscopy and spectroscopy, we study the effects of inter- actions between individual magnetic atoms and molecules that are separated from an underlying metallic surface by a thin insulating layer of copper nitride (Cu2N). By utilising the different growth phases of the Cu2N, we show that the position of magnetic molecules can be controlled, and that the properties of a molecule can be controlled through the binding site. For electrical transport through a junction containing an individual iron phthalocya- nine (FePc) molecule on Cu2N, we observe two novel magnetoresistance behaviours that arise from negative differential resistance (NDR) that shifts by unexpectedly large amounts in a magnetic field. Because voltage is dropped asymmetrically in this double barrier junction, the FePc can become transiently charged when its states are aligned with the Fermi energy of the Cu, resulting in the observed NDR effect. Furthermore, the asymmetric coupling magnifies the observed voltage sensitivity of the magnetic field dependence of the NDR, which inherently is on the scale of the Zeeman energy, by almost two orders of magnitude. These findings represent a new basis for making magnetoresistance devices at the single molecule scale. Fur- thermore, the enhancement of the energy scales created by asymmetric coupling of the junction can be used in conjunction with other multi-step tunnelling processes to allow for the investigation of phenomena that would otherwise be difficult to observe. We also show that it is possible to interact with the f-shell magnetic moment when a bis(phthalocyaninato)Dy(III) complex (DyPc2) is strongly coupled to the Cu(001) surface. DyPc2 is a single molecule magnet, a type of molecule which may have applications in both spintronic and quantum computing applications. A Fano lineshape is observed at the Fermi energy, which is caused by the interference between tunnelling into the continuum and into a resonance created by the Kondo effect. By mapping the variance of the amplitude of the Fano line shape we are able to show that the ligand states create the continuum states and the 4f states create the Kondo resonance.
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Gruber, Manuel. "Electronic and magnetic properties of hybrid interfaces : from single molecules to ultra-thin molecular films on metallic substrates." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAE035/document.

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Comprendre les propriétés des interfaces molécules/métaux est d’une importance capitale pour la spintronique organique. La première partie porte sur l’étude des propriétés magnétiques de molécules de phtalocyanine de manganèse. Nous avons montré que les premières couches moléculaires forment des colonnes avec un arrangement antiferromagnétique sur la surface de Co(100). Ces dernières mènent à de l’anisotropie d’échange. La seconde partie porte sur l’étude d’une molécule à transition de spin, la Fe(phen)2(NCS)2, sublimée sur différentes surfaces. Nous avons identifié les états de spin d’une molécule unique sur du Cu(100). De plus, nous avons commuté l’état de spin d’une molécule unique pourvu qu’elle soit suffisamment découplée du substrat
Understanding the properties of molecules at the interface with metals is a fundamental issue for organic spintronics. The first part is devoted to the study of magnetic properties of planar manganese-phthalocyanine molecules and Co films. We evidenced that the first molecular layers form vertical columns with antiferromagnetic ordering on the Co(100) surface. In turn, these molecular columns lead to exchange bias. The second part is focused on the study of a spin-crossover complex, Fe(phen)2(NCS)2 sublimed on different metallic surfaces. We identified the two spin states of a single molecules on Cu(100). By applying voltages pulses, we switched the spin state of a single molecule provided that it is sufficiently decoupled from the substrate
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Books on the topic "Molecules - Magnetic properties"

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Molecular magnetism. New York, NY: VCH, 1993.

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Molecular magnetochemistry. Amsterdam: Gordon and Breach Science Publishers, 1998.

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Naaman, Ron. Electronic and Magnetic Properties of Chiral Molecules and Supramolecular Architectures. Berlin, Heidelberg: Springer-Verlag Berlin Heidelberg, 2011.

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Supin kagaku ga hiraku bunshi jisei no shintenkai: Sekkei kara kinōka made. Kyōto-shi: Kagaku Dōjin, 2014.

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1903-, Arbuzov Boris Aleksandrovich, ed. Molekuli͡a︡rnai͡a︡ magnetokhimii͡a︡. Moskva: "Nauka", 1991.

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ICMM 2004 (2004 Tsukuba International Congress Center). The IXth International Conference on Molecule-Based Magnets, ICMM 2004: October 4-8, 2004, Tsukuba International Congress Center, Tsukuba, Japan. Japan: s.n., 2004.

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Naaman, Ron, David N. Beratan, and David Waldeck, eds. Electronic and Magnetic Properties of Chiral Molecules and Supramolecular Architectures. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-18104-7.

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Buckingham, A. D. Optical, electric, and magnetic properties of molecules: A review of the work of A.D. Buckingham. Amsterdam: Elsevier, 1997.

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Roberta, Sessoli, and Villain Jacques, eds. Molecular nanomagnets. New York: Oxford University Press, 2006.

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NATO Advanced Research Workshop on Magnetic Molecular Materials (1990 Il Ciocco, Italy). Magnetic molecular materials. Dordrecht: Kluwer Academic Publishers, 1991.

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Book chapters on the topic "Molecules - Magnetic properties"

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Maruyama, Yusei. "Electric and Magnetic Properties." In From Molecules to Molecular Systems, 175–90. Tokyo: Springer Japan, 1998. http://dx.doi.org/10.1007/978-4-431-66868-8_11.

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Gatteschi, Dante, and Roberta Sessoli. "Magnetic Properties of Large Clusters." In Magnetism: Molecules to Materials, 63–108. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2001. http://dx.doi.org/10.1002/9783527620548.ch3b.

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Schwarz, Alexander. "Local Physical Properties of Magnetic Molecules." In Atomic- and Nanoscale Magnetism, 71–87. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99558-8_4.

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Day, Peter, and Eugenio Coronado. "Molecular Materials Combining Magnetic and Conducting Properties." In Magnetism: Molecules to Materials, 105–59. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/9783527620548.ch4d.

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Day, Peter, and Eugenio Coronado. "Molecular Materials Combining Magnetic and Conducting Properties." In Magnetism: Molecules to Materials V, 105–59. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527604383.ch4.

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Cano, Joan, and Yves Journaux. "Monte Carlo Simulation: A Tool to Analyse Magnetic Properties." In Magnetism: Molecules to Materials, 189–222. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/9783527620548.ch6d.

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Borrás-Almenar, Juan J., Juan M. Clemente-Juan, Eugenio Coronado, Andrew Palii, and Boris S. Tsukerblat. "Magnetic Properties of Mixed-Valence Clusters: Theoretical Approaches and Applications." In Magnetism: Molecules to Materials, 155–210. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2003. http://dx.doi.org/10.1002/9783527620548.ch5.

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Thompson, Laurence K., Oliver Waldmann, and Zhiqiang Xu. "Magnetic Properties of Self-Assembled [2 × 2] and [3 × 3] Grids." In Magnetism: Molecules to Materials, 173–203. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2003. http://dx.doi.org/10.1002/9783527620548.ch5c.

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Cano, Joan, and Yves Journaux. "Monte Carlo Simulation: A Tool to Analyse Magnetic Properties." In Magnetism: Molecules to Materials V, 189–222. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527604383.ch6.

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Yang, Guochun, and Yunjie Xu. "Vibrational Circular Dichroism Spectroscopy of Chiral Molecules." In Electronic and Magnetic Properties of Chiral Molecules and Supramolecular Architectures, 189–236. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/128_2010_86.

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Conference papers on the topic "Molecules - Magnetic properties"

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Carmeli, Itai. "Electronic-Magnetic Properties of Monolayers of Chiral Bio-organic Molecules." In STRUCTURAL AND ELECTRONIC PROPERTIES OF MOLECULAR NANOSTRUCTURES: XVI International Winterschool on Electronic Properties of Novel Materials. AIP, 2002. http://dx.doi.org/10.1063/1.1514162.

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Itoh, S., K. Takahashi, K. Fukuzawa, and H. Zhang. "Spreading properties of monolayer lubricant films: Effect of bonded molecules." In 2009 Asia-Pacific Magnetic Recording Conference (APMRC). IEEE, 2009. http://dx.doi.org/10.1109/apmrc.2009.4925422.

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Coroiu, I., P. Pascuta, M. Bosca, and E. Culea. "Dielectric and magnetic properties of some gadolinium silica nanoceramics." In PROCESSES IN ISOTOPES AND MOLECULES (PIM 2013). AIP, 2013. http://dx.doi.org/10.1063/1.4833727.

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Tyagi, Pawan, and Christopher D’Angelo. "A Monte Carlo Study of Molecular Spintronics Devices." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-62413.

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Molecular spintronics devices (MSDs) are capable of harnessing the controllable transport and magnetic properties of molecular device elements and are highly promising candidates for revolutionizing computer logic and memory. These advanced MSD can enable the next generation of instrumentation and control devices for the wide range of mechanical engineering systems. A MSD is typically produced by placing magnetic molecule(s) between the two ferromagnetic electrodes. Recent experimental studies show that some magnetic molecules produced unprecedented strong exchange couplings between the two ferromagnetic electrodes, leading to intriguing magnetic and transport properties in a MSD. Future development of MSDs will critically depend on obtaining an in-depth understanding of the molecule induced exchange coupling, and its impact on MSD’s switchability, functional temperature range, stability etc. However, the large size of MSD systems and unsuitable device designs are the two biggest hurdles in theoretical and experimental studies of magnetic attributes produced by molecules in a MSD. This research theoretically studies the MSD by performing Monte Carlo simulations (MCS). The effect of magnetic molecule induced exchange coupling was studied at different temperature and for different device sizes — represented by a 2D Ising model. Our MCS shows that thermal energy of the MSD strongly influenced the molecular coupling effect. We studied the effect of a wide range of molecule-metal electrode couplings on the fundamental properties of MSDs. If molecules induced exchange coupling increased beyond a threshold limit a MSD acquired dramatically new attributes. Our MCS exhibited that the transition points in MSD’s magnetic properties was the interplay of temperature and molecular coupling strength. These simulations will allow the understanding of fundamental device mechanisms behind the functioning of novel MSDs. Our MSD model represents a myriad of magnetic molecules and ferromagnets combinations promising for realizing experimental MSDs. These MCS will also assist in designing new class of MSDs with desired attributes for advanced computers and control systems.
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Nyavro, Alexander V., Valerii S. Demidenko, Mikhail A. Buldakov, Victor N. Cherepanov, Yuliya N. Kalugina, and Nickolai L. Zaitsev. "Theoretical investigation of electric and magnetic properties of molecules and clusters." In SPIE Proceedings, edited by Gennadii G. Matvienko and Victor A. Banakh. SPIE, 2006. http://dx.doi.org/10.1117/12.722533.

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SOUSA, J. B., G. N. KAKAZEI, YU G. POGORELOV, S. CARDOSO, P. P. FREITAS, A. M. L. LOPES, and M. M. PEREIRA DE AZEVEDO. "TRANSPORT AND MAGNETIC PROPERTIES OF DISCONTINUOUS CO80FE20/AL2O3 MULTILAYERS." In From Atoms, Molecules and Clusters in Complex Environment to Thin Films and Multilayers. WORLD SCIENTIFIC, 2000. http://dx.doi.org/10.1142/9789812793652_0018.

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Tagaya, Yoichi, Yasunaga Mitsuya, Susumu Ogata, Hedong Zhang, and Kenji Fukuzawa. "A Simulation Method for Spreading Dynamics of Molecularly Thin Lubricant Films on Magnetic Disks Using Bead-Spring Model." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-64393.

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An effective simulation technique for describing the spreading properties of molecularly thin lubricant films on magnetic disks has been developed. We propose a molecular precipitation method that can simulate initial molecule arrangement of the films dip-coated onto the disks. Reptation and Rouse models as the model of the molecular motion, and molecular insertion and molecular precipitation methods as the method for putting molecules in initial positions were compared. From the results of the spreading profiles and diffusion coefficients, it has been revealed that the molecular precipitation method combined with the Rouse model is effective in simulating the spreading of the lubricant films.
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Dallas, P., D. Petridis, and D. Niarchos. "Effect of organic molecules absorption in the magnetic properties of iron oxide nanoparticles." In INTERMAG Asia 2005: Digest of the IEEE International Magnetics Conference. IEEE, 2005. http://dx.doi.org/10.1109/intmag.2005.1464180.

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Dillard, Joshua, Uzma Amir, Pawan Tyagi, and Vincent Lamberti. "Structural Stability of Magnetic Tunnel Junction Based Molecular Spintronics Devices (MTJMSD)." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-24134.

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Abstract Harnessing the exotic properties of molecular level nanostructures to produce novel sensors, metamaterials, and futuristic computer devices can be technologically transformative. In addition, connecting the molecular nanostructures to ferromagnetic electrodes bring the unprecedented opportunity of making spin property based molecular devices. We have demonstrated that magnetic tunnel junction based molecular spintronics device (MTJMSD) approach to address numerous technological hurdles that have been inhibiting this field for decades (P. Tyagi, J. Mater. Chem., Vol. 21, 4733). MTJMSD approach is based on producing a capacitor like a testbed where two metal electrodes are separated by an ultrathin insulator and subsequently bridging the molecule nanostructure across the insulator to transform a capacitor into a molecular device. Our prior work showed that MTJMSDs produced extremely intriguing phenomenon such as room temperature current suppression by six orders, spin photovoltaic effect, and evolution of new forms of magnetic metamaterials arising due to the interaction of the magnetic a molecule with two ferromagnetic thin films. However, making robust and reproducible electrical connections with exotic molecules with ferromagnetic electrodes is full of challenges and requires attention to MTJMSD structural stability. This paper focuses on MTJMSD stability by describing the overall fabrication protocol and the associated potential threat to reliability. MTJMSD is based on microfabrication methods such as (a) photolithography for patterning the ferromagnetic electrodes, (b) sputtering of metallic thin films and insulator, and (c) at the end electrochemical process for bridging the molecules between two ferromagnetic films separated by ∼ 2nm insulating gap. For the successful MTJMSD fabrication, the selection of ferromagnetic metal electrodes and thickness was found to be a deterministic factor in designing the photolithography, thin film deposition strategy, and molecular bridging process. We mainly used isotropic NiFe soft magnetic material and anisotropic Cobalt (Co) with significant magnetic hardness. We found Co was susceptible to chemical etching when directly exposed to photoresist developer and aged molecular solution. However, NiFe was very stable against the chemicals we used in the MTJMSD fabrication. As compared to NiFe, the Co films with > 10nm thickness were susceptible to mechanical stress-induced nanoscale deformities. However, cobalt was essential to produce (a) low leakage current before transforming the capacitor from the magnetic tunnel junction into molecular devices and (b) tailoring the magnetic properties of the ferromagnetic electrodes. This paper describes our overall MTJMSD fabrication scheme and process optimization to overcome various challenges to produce stable and reliable MTJMSDs. We also discuss the role of mechanical stresses arising during the sputtering of the ultrathin insulator and how to overcome that challenge by optimizing the insulator growth process. This paper will benefit researchers striving to make nanoscale spintronics devices for solving grand challenges in developing advanced sensors, magnetic metamaterials, and computer devices.
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Raita, O., A. Popa, D. Toloman, M. Stan, and L. M. Giurgiu. "Magnetic resonance investigation of Zn[sub 1−x]Fe[sub x]O properties influenced by annealing atmosphere." In PROCESSES IN ISOTOPES AND MOLECULES (PIM 2013). AIP, 2013. http://dx.doi.org/10.1063/1.4833739.

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Reports on the topic "Molecules - Magnetic properties"

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Diel, B. N. Design and Construction of Main Group Element-Containing Molecules and Molecule-Derived Materials With Unusual Electronic, Optical, and Magnetic Properties. Office of Scientific and Technical Information (OSTI), August 2004. http://dx.doi.org/10.2172/830008.

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Rousochatzakis, Ioannis. Theoretical Investigation of Dynamic Properties of Magnetic Molecule Systems as Probed by NMR and Pulsed Fields Experiments. Office of Scientific and Technical Information (OSTI), December 2005. http://dx.doi.org/10.2172/861633.

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