Relevant bibliographies by topics / Magneto-optics / Dissertations / Theses
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Dissertations / Theses on the topic 'Magneto-optics'

Author: Grafiati
Published: 4 June 2021
Last updated: 26 July 2025

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1

Stuart, R. J. "Magneto-optics of low dimensional systems." Thesis, University of Cambridge, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360611.

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2

Vaughan, Thomas Alexander. "Magneto-optics of InAs/GaSb heterostructures." Thesis, University of Oxford, 1995. http://ora.ox.ac.uk/objects/uuid:52b3d4c8-04f2-4ee8-b5a5-382934807722.

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The optical properties of InAs/GaSb heterostructures under applied magnetic fields are studied in experimental and theoretical detail. The InAs/GaSb system is a type-II "crossed-gap" system, where the valence band edge of GaSb lies higher in energy than the conduction band edge of InAs. This leads to a region of energy above the InAs conduction band where conduction and hole states mix. Thin-layer superlattices remain semiconducting due to confinement effects, but thick-layer superlattices experience charge transfer which leads to intrinsic carrier densities approaching 10<sup>12</sup> cm<sup>
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3

LAVIANO, FRANCESCO. "Magneto-optics: Imaging and Quantitative Analysis." Doctoral thesis, Politecnico di Torino, 2005. http://hdl.handle.net/11583/2565567.

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The work presented in this thesis deals with the magneto-optical imaging (MOI) technique, which was developed during the PhD course of the candidate, with an equipment at the international state-of-the-art. The quantitative theoretical formalism was critically reproduced and verified, along with a careful calibration procedure. A novel, big improvement was brought for all the MOI experiments, aimed at the quantitative reconstruction of the current density, by an iterative procedure (Supercond. Sci. Technol. 16, 71 (2003)). The new MOI method was then applied to study a wide class of supercondu
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4

Jonsson, Fredrik. "The nonlinear optics of magneto-optic media." Doctoral thesis, KTH, Physics, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2967.

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5

Ardavan, Arzhang. "Millimetre-wave magneto-optics of correlated systems." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297940.

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6

Traynor, Nicholas James. "Magneto-optics of excitons in quantum wells." Thesis, University of Southampton, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242490.

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7

Yang, Kaida. "Magneto-Optics and Magneto-Transport Studies on Thin Films for Sensor Applications." W&M ScholarWorks, 2014. https://scholarworks.wm.edu/etd/1539623368.

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Recent progress and interest have bought considerable effort to bear on the synthesis and opportunities of magnetic thin films in different fields. There are applications in many fields, including remote sensing, waveguide applications, hard drive applications, etc. at the College of William and Mary, we have focused on utilizing magnetic thin films in some of these applications and are deeply involved in the optimization process of the thin films.
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8

Jones, Samuel Peter Philip. "Magneto-optics of complex oxides at terahertz frequencies." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:c3d53c3c-d51a-417c-894a-fcb9681f1447.

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This thesis presents experimental results on two complex oxide systems: Cu<sub>1-x</sub>Zn<sub>x</sub>O and La<sub>0.7</sub>Sr<sub>0.3</sub>MnO<sub>3</sub>:ZnO. The dynamic magnetoelectric response of these materials is obtained using terahertz time-domain spectroscopy, supported by Fourier-transform infrared spectroscopy, Raman spectroscopy and X-ray diffraction. Evidence for an electromagnon in the multiferroic phase of CuO is presented for the first time. This high temperature (213-230K) electromagnon is linked to intersublattice exchange between two Cu sublattices. The temperature dependen
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9

LaForge, Andrew David. "Probing correlated electron matter with infrared magneto-optics." Diss., [La Jolla] : University of California, San Diego, 2009. http://wwwlib.umi.com/cr/ucsd/fullcit?p3369676.

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Thesis (Ph. D.)--University of California, San Diego, 2009.<br>Title from first page of PDF file (viewed September 16, 2009). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 99-113).
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10

Reid, Alexander Hume Mayston Reid. "Studies of the inverse Faraday effect and ultrafast magneto-optics." Thesis, University of Oxford, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.504510.

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11

Alam, Mohammad. "High performance magneto-optic garnet materials for integrated optics and photonics." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2012. https://ro.ecu.edu.au/theses/528.

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This work explores the preparation, characteristics and properties of highly bismuth (Bi) substituted, metal doped, iron garnet compounds and investigates their potential for various emerging applications in the visible and near infrared spectral regions. Bi-substituted iron garnet and garnet-oxide nanocomposite films of generic composition type (Bi, Dy/Lu)3(Fe, Ga/Al)5O12 are prepared by using a radio frequency (RF) magnetron sputtering technique. The physical properties (crystallinity, film morphology, optical absorption spectra across the visible spectral range and the elemental composition
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12

Novikova, Irina Borisovna. "Nonlinear magneto-optic effects in optically dense Rb vapor." Texas A&M University, 2004. http://hdl.handle.net/1969.1/364.

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Nonlinear magneto-optical effects, originated from atomic coherence, are studied both theoretically and experimentally in thermal Rb vapor. The analytical description of the fundamental properties of coherent media are based on the simplified three- and four-level systems, and then verified using numerical simulations and experimental measurements. In particular, we analyze the modification of the long-lived atomic coherence due to various physical effects, such as reabsorption of spontaneous radiation, collisions with a buffer gas atoms, etc. We also discuss the importance of the high-order n
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13

Chughtai, Rizwan Ahmed. "Magneto-optics of Strongly Correlated Electron Systems in the Quantum Hall Effect." Thesis, University of Oxford, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.491347.

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14

Ahmed, Naseer. "Magneto-optics of MBE grown bulk and low dimensional III-V semiconductors." Thesis, Heriot-Watt University, 1991. http://hdl.handle.net/10399/1084.

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15

CAPRILE, AMBRA. "Broadband characterization and time-resolved nanosecond magneto-optics of thin magnetic films." Doctoral thesis, Politecnico di Torino, 2014. http://hdl.handle.net/11583/2532890.

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In the field of magnetic devices as in all the fields related to information technology and electronics the demand for a higher clock rate and faster device operations is continuously increasing. In data storage, the effort to reach the highest information density is leading to the usage of patterned films having micrometer and sub-micrometer features. Both data storage and telecommunication fields are focusing on the magnetization switching behavior at the highest attainable frequency. For data storage it is necessary to obtain a high read/write speed, while for telecommunications a magnetiza
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16

Huber, Jana. "Plasmonic resonances in metallic nanoarrays." Thesis, Uppsala universitet, Materialfysik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-262269.

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The optical and magneto-optical response of plasmonic resonances in metallic nanoarrays out of square structures, either in holes or islands, were investigated. The excitation of the Bragg Plasmons takes place within a grating. Significant differences in the excited plasmon modes were seen by using p- or s-polarized light as well between the holes and islands sample. In order to investigate magneto-optical response from the magnetic nanostrucures, transverse magneto-optical Kerr effect (TMOKE) measurements were done with the result that there is a difference in holes and islands sample. Contra
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17

Smith, Damon. "Magneto-Optic Spectroscopy and Near-Field Optical Coupling in Nanoparticle Composite Materials." ScholarWorks@UNO, 2005. http://scholarworks.uno.edu/td/246.

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The Faraday rotation spectrum of composites containing magnetite nanoparticles is found to be dependent on the interparticle spacing of the constituent nanoparticles. The composite materials are prepared by combining chemicallysynthesized Fe3O4 (magnetite) nanoparticles (8 nm diameter) and poly(methylmethacrylate) (PMMA). Composites are made containing a range of nanoparticle concentrations. The peak of the main spectral feature depends on nanoparticle concentration; this peak is observed to shift from approximately 470 nm for (dilute composites) to 560 nm (concentrated). A theory is
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18

Ciesla, Craig Michael. "Time-resolved spectroscopy of narrow gap semiconductors with free-electron lasers." Thesis, Heriot-Watt University, 1997. http://hdl.handle.net/10399/648.

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19

Li, Zhanming. "Magnetic properties of sputtered CoCr films and magneto-optics of rare earth-transition metal multilayers." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/28858.

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The goal of the thesis is to make contributions to the development of two new technologies for data storage: perpendicular recording and magneto-optic recording. CoCr and rare earth-transition metal multilayers are the most suitable media for perpendicular recording and magneto-optic recording technologies, respectively. In part A of the thesis, magnetic properties of CoCr thin films produced by dc magnetron sputtering are studied for various deposition conditions. Dielectric constants and extraordinary Hall effect are also studied to provide information complementary to magnetic properties. I
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20

Casals, Montserrat Blai. "Magneto-optical spectroscopy and domain imaging of functional oxides." Doctoral thesis, Universitat Autònoma de Barcelona, 2017. http://hdl.handle.net/10803/456212.

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En aquesta tesi s'han investigat les propietats físiques de diferents sistemes basats en òxids funcionals de metalls de transició. Aquests materials presenten una gran varietat de propietats –magnetisme, ferroelectricitat, superconductivitat– que els fan interessants per a ser explotats com a nous dispositius més enllà de les tecnologies electròniques i fotòniques d'avui dia. La força motriu del nostre estudi ha estat la comprensió dels processos físics fonamentals que expliquen una sèrie de fenòmens observats. En alguns casos, el nostre interès ha estat entendre perquè un determinat material
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21

Zhaksylykova, Indira. "Magneto-optic detection limits for semiconductor spintronics." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLX099/document.

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Ce travail explore l'utilisation de l'effet magnéto-optique pour étudier la dynamique de spin des électrons de conduction dans les semi-conducteurs non magnétiques lorsqu'ils sont pompés avec des photons polarisés circulairement. En général, les moments magnétiques hors-équilibre induits optiquement dans les semi-conducteurs non magnétiques sont plus petits que ceux des matériaux magnétiques. L'effet magnéto-optique en principe offre une sensibilité suffisante pour détecter ces faibles moments magnétiques via une mesure de rotation Faraday dans la limite de bruit de photons. Nous avons comparé
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22

Mohelský, Ivan. "Infračervená magneto-spektroskopie topologického izolátoru Bi2Te3." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417169.

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Tato práce se zabývá charakterizací topologického izolátoru Bi2Te3, materiálu s nevodivými stavy v objemu, ale jedním vodivým pásem na povrchu. Tento materiál je zkoumán již přes 60 let, ale i přes to není jeho objemová pásová struktura úplně objasněna, obzvláště charakter zakázaného pásu je stále předmětem diskuze. V této práci jsou prezentovány výsledky infračervené spektroskopie na Landauových hladinách v magnetickém poli až do 34 T, doplněné elipsometrickým měřením mimo magnetické pole. Výsledky těchto měření by měli pomoci vyjasnit některé vlastnosti zakázaného pásu. Pozorovaná optická od
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23

Dzibrou, Dzmitry. "Complex Oxide Photonic Crystals." Licentiate thesis, KTH, Microelectronics and Applied Physics, MAP, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-11068.

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<p>Microphotonics has been offering a body of ideas to prospective applicationsin optics. Among those, the concept of photonic integrated circuits (PIC’s) has recently spurred a substantial excitement into the scientific community. Relisation of the PIC’s becomes feasible as the size shrinkage of the optical elements is accomplished. The elements based on photonic crystals (PCs) represent promising candidacy for manufacture of PIC’s. This thesis is devoted to tailoring of optical properties and advanced modelling of two types of photonic crystals: (Bi<sub>3</sub>Fe<sub>5</sub>O<sub>12</sub>/Sm
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24

Neelamraju, Bharati. "Characterization Techniques for Photonic Materials." Thesis, The University of Arizona, 2016. http://hdl.handle.net/10150/613403.

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The advancement of photonics technologies depends on synthesis of novel materials and processes for device fabrication. The characterization techniques of the optical, electrical and magnetic properties of the synthesized materials and devices, by non-contact, non-invasive and nondestructive methods plays a significant role in development of new photonics technologies. The research reported in this thesis focuses on two such aspects of photonic materials characterization: Magneto-Optic characterization and Spectroscopic Ellipsometry. The theoretical and experimental basis of these two techniq
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25

ALVAREZ, Ammis Sánchez. "Armadilha magneto ótica de rubídio e mistura de quatro ondas no vapor atômico." Universidade Federal de Pernambuco, 2016. https://repositorio.ufpe.br/handle/123456789/18556.

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Submitted by Irene Nascimento (irene.kessia@ufpe.br) on 2017-04-12T17:11:36Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Dissertação Ammis.pdf: 2193663 bytes, checksum: 132bcda3d18c7d64c2a148645f123479 (MD5)<br>Made available in DSpace on 2017-04-12T17:11:36Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Dissertação Ammis.pdf: 2193663 bytes, checksum: 132bcda3d18c7d64c2a148645f123479 (MD5) Previous issue date: 2016-05-04<br>Facepe<br>Neste trabalho apresentamos a caracterização de uma a
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26

Shinn, Mannix Anderson. "DEVELOPMENT OF MAGNETO-OPTIC SENSORS WITH GALLIUM IN BISMUTH DOPED RARE-EARTH IRON-GARNET THICK FILMS." Diss., Temple University Libraries, 2017. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/472839.

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Physics<br>Ph.D.<br>We have investigated the Faraday effect of bismuth-doped rare-earth iron-garnets with varying doping levels of gallium from z = 1.0 to 1.35. We used lutetium to control the film's in-plane magnetic properties and found that gallium doping levels above the compensation point caused a loss of anisotropy control, a canted out-of-plane magnetization in the film, and an extremely weak but linear coercivity above 10 micro-Tesla fields. Using these results we focused on in-plane films to create 8 layer stacks of 500 um thick films to achieve a minimum detectable field of 50 pT at
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27

Pärnaste, Martin. "The Influence of Interlayer Exchange Coupling on Magnetic Ordering in Fe-based Heterostructures." Doctoral thesis, Uppsala universitet, Fysik III, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7885.

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Temperature dependent magnetization measurements were conducted on Fe-based heterostructures. A linear increase of the magnetic critical temperature with increasing Fe thickness was found for Fe/V superlattices with strong interlayer exchange coupling. For weakly coupled Fe/V superlattices anomalous values of the critical exponent β were attributed to differences in the effective interlayer exchange coupling in the surface region and in the interior of the superlattice stack. Hydrogen loading of a sample containing a thin Fe film, up to a maximum pressure of 4 mbar gave an increase of the magn
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28

Hakl, Michael. "Infrared magneto-spectroscopy of relativistic-like electrons in three-dimensional solids." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAY085/document.

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L'utilisation de l'équation de Dirac/Weyl conduit à une simplification conceptuelle dans une description de la structure de la bande dans les solides à faible échelle d'énergie. En particulier, les excitations d'électrons-trous peuvent être considérées comme analogues au cas relativiste tel que conductivité optique linéaire, le suppression de backscattering ou la manifestation des arcs de Fermi et la chiralité des particules. En outre, la phase semi-métallique est également un élément crucial pour la classification des matériaux. La taille de le gap est affectée qualitativement par le type de
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29

Chitta, Valmir Antonio. "Propriedades eletrônicas de hetero-estruturas de semicondutores zincblende." Universidade de São Paulo, 1987. http://www.teses.usp.br/teses/disponiveis/54/54131/tde-22052009-131752/.

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Utilizou-se um Hamiltoniano KP (6x6) do tipo Kane para, se estudar a estrutura de bandas e níveis de Landau para heteroestruturas de semicondutores zincblende dos grupos III-V e II-VI. Os efeitos do acoplamento entre as bandas de condução e valência, da mistura dos estados da banda de valência, da não-parabolicidade dos níveis, da total degenerescência dos níveis, do warping e das descontinuidades das massas efetivas nas heterointerfaces são levados em conta. Mostrou-se que a interação entre as bandas de condução e valência não pode ser desprezada, mesmo para semicondutores de gap largo, como
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30

Montgomery, Patrick D. "MAGNETO-OPTICAL PROPERTIES OF THIN PERMALLOY FILMS: A STUDY OF THE MAGNETO-OPTICAL GENERATION OF LIGHT CARRYING ANGULAR MOMENTUM." UKnowledge, 2018. https://uknowledge.uky.edu/ece_etds/126.

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Magneto-optical materials such as permalloy can be used to create artificial spin- ice (ASI) lattices with antiferromagnetic ordering. Magneto-optical materials used to create diffraction lattices are known to exhibit magnetic scattering at the half- order Bragg peak while in the ground state. The significant drawbacks of studying the magneto-optical generation of OAM using x-rays are cost, time, and access to proper equipment. In this work, it is shown that the possibility of studying OAM and magneto-optical materials in the spectrum of visible light at or around 2 eV is viable. Using spectro
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31

Leszczynski, Przemyslaw. "Propriétés optiques et magnéto-optiques de systèmes électroniques purement bidimensionnels graphène." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENY002/document.

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Malgré l'attention massive que le graphène a attiré ces dernières années, beaucoup de questions concernant ses propriétés fondamentales restent sans réponse. Dans ce travail, nous présentons les résultats d'une série d'expériences de magnéto-optique effectuées sur des systèmes de type graphène différents. La spectroscopie de diffusion micro-Raman a été utilisée comme une méthode de choix, en raison de son caractère non invasif, des puissantes possibilités de caractérisation qu’elle offre, et de la haute résolution spatiale. Les champs magnétiques élevés ont aussi été utilisés pour permettre d’
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32

Phelps, Gretchen. "MAGNETO-OPTICAL EFFECTS AND PRECISION MEASUREMENT PHYSICS: ACCESSING THE MAGNETIC FARADAY EFFECT OF POLARIZED 3HE WITH A TRIPLE MODULATION TECHNIQUE." UKnowledge, 2014. http://uknowledge.uky.edu/physastron_etds/15.

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This work is comprised of the study of two magneto-optical phenomena: the Kerr effect and the Faraday effect. Neutron physics experiments often utilize polarized neutrons, and one method to generate or guide polarized neutrons involves the use of a system of magnetic super-mirrors. Experience shows that the magnetization of the super-mirror may decay with time; therefore, we implemented the surface magneto-optical Kerr effect (SMOKE) to study the temporal behavior of the magnetization of a magnetized remnant super-mirror sample, where a sensitivity of 0.1 mrad was obtained. Unique to our set-u
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33

Souther, Nathan Jon. "Light Shift Measurements of Cold Rubidium Atoms using Raman Pump-Probe Spectroscopy." Miami University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=miami1250622906.

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34

Nguyen, Thi Huyen Trang. "Optical and spin properties of 3D methylammonium lead iodine single crystals." Electronic Thesis or Diss., université Paris-Saclay, 2025. http://www.theses.fr/2025UPAST002.

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Les pérovskites halogénées (PHs) sont apparues comme une nouvelle classe de matériaux semiconducteurs très prometteurs pour des applications en photovoltaïque et optoélectronique. Ces matériaux présentent des propriétés remarquables telles qu'un long temps de vie et une importante longueur de diffusion des porteurs de charge malgré une densité de défauts élevée. Cependant, l'origine physique de la tolérance aux défauts des PHs est encore très débattue. Une meilleure compréhension de la nature et de l'impact des défauts est encore nécessaire pour optimiser les dispositifs. De plus, de part nota
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35

Agyare, Benjamin A. "INVESTIGATION OF ATOMIC MOTION IN OPTICAL LATTICES VIA INTENSITY CORRELATION MEASUREMENT." Miami University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=miami1186171967.

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36

Abney, Joshua. "STUDIES OF MAGNETICALLY INDUCED FARADAY ROTATION BY POLARIZED HELIUM-3 ATOMS." UKnowledge, 2018. https://uknowledge.uky.edu/physastron_etds/57.

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Gyromagnetic Faraday rotation offers a new method to probe limits on properties of simple spin systems such as the possible magnetic moment of asymmetric dark matter or as a polarization monitor for polarized targets. Theoretical calculations predict the expected rotations of linearly polarized light due to the magnetization of spin-1/2 particles are close to or beyond the limit of what can currently be measured experimentally (10−9 rad). So far, this effect has not been verified. Nuclear spin polarized 3He provides an ideal test system due to its simple structure and ability to achieve high n
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37

Tran, Ngoc Minh. "Applications of nonlinear magneto-photonics at the nanoscale." Thesis, Le Mans, 2018. http://www.theses.fr/2018LEMA1029/document.

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La génération de seconde harmonique magnétique (mSHG pour magnetic Second Harmonic Generation) est un phénomène physique très sensible apparaissant grâce aux brisures de symétrie aux niveaux des surfaces et interfaces des structures métalliques magnétiques. Elle constitue donc un outil puissant pour explorer ce type d'interfaces et des nanostructures. Dans ce travail, nous nous intéressons aux couplages et interactions entre la mSHG et les ondes électromagnétiques pouvant se propager en surface des matériaux. Un intérêt spécifique est porté sur l’ excitation de (i) plasmon polaritons de surfac
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38

Wu, Te-ho. "Magnetic, magneto-optic, and magneto-transport studies of thin film media of magneto-optical recording." Diss., The University of Arizona, 1993. http://hdl.handle.net/10150/186291.

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This dissertation contains a fairly comprehensive study on the characteristics of magneto-optical (MO) recording media. The primary aspects which are investigated consist of magnetic, magneto-optic, magneto-transport properties, and observations of domains. The main materials which have been examined are amorphous rare earth-transition metal (RE-TM) Tbₓ(FeCo)₁₋ₓ and multilayered Co/Pt and Co/Pd thin films. The samples were fabricated in several industrial and academic laboratories under different deposition conditions and deposited on different underlayers and substrates. The instrumentation u
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Clements, Ethan Robert. "CHARACTERIZATION OF OPTICAL LATTICES USING PUMP-PROBESPECTROSCOPY AND FLUORESCENCE IMAGING." Miami University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=miami1470323164.

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40

Bermejo, Ortiz Joachín. "Topologie, brisure de symétrie et vallées dans les systèmes de Dirac IV -VI : Une étude magnéto-optique et magnéto-transport." Electronic Thesis or Diss., Sorbonne université, 2024. http://www.theses.fr/2024SORUS124.

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Le travail présenté dans cette thèse se concentre sur l'interaction entre la topologie et divers phénomènes physiques tels que la brisure de symétrie et les vallées électroniques dans les systèmes de Dirac IV-VI. Cette étude témoigne de la pertinence d'incorporer de nouveaux degrés de liberté (chiralité, vallée...) dans les systèmes de la matière condensée. De plus, elle met en évidence l'immense polyvalence des systèmes Dirac IV-VI; ce travail prédit et démontre une variété de phénomènes fascinants émergeant au sein de ces systèmes, tels que l'inversion de bande, l'interaction de vallées, la
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41

Bernacki, Bruce Edward. "Characterization of magneto-optical media and systems." Diss., The University of Arizona, 1992. http://hdl.handle.net/10150/186031.

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This dissertation is concerned with the characterization of both the magneto-optic (MO) media and optical system used in MO recording. Amorphous rare earth-transition metal (RE-TM) thin films give rise to magnetic domain walls that are not smooth, but possess varying degrees of jaggedness. A figure-of-merit for domain wall jaggedness could be used to rank films with respect to their suitability for use in MO recording, since domain wall jaggedness has been shown to increase readout noise. Using a specially-constructed static tester, the measured fractal dimension of MO domain walls provides th
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Hajjar, Roger Antoine. "Characterization of magneto-optical recording media." Diss., The University of Arizona, 1992. http://hdl.handle.net/10150/185831.

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This dissertation discusses the optical, magnetic and transport properties of magneto-optical recording media. The various custom-made and off-the-shelf instrumentation used in this study include: a Vibrating Sample Magnetometer (VSM), a modified polarization microscope, a polar Kerr effect loop tracer, a variable angle of incidence ellipsometer, and magnetoresistance/Hall effect/resistivity probes. Most of the samples studied were analyzed for determination of their composition and thickness by Rutherford Back Scattering (RPS) and X-Ray Fluorescence (XRF). The samples investigated were manufa
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Tanaka, Hiroki. "Zeeman Splitting Caused by Localized sp-d Exchange Interaction in Ferromagnetic GaMnAs Observed by Magneto-Optical Characterization." Ohio University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1441982108.

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Mondal, Ritwik. "Relativistic theory of laser-induced magnetization dynamics." Doctoral thesis, Uppsala universitet, Materialteori, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-315247.

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Ultrafast dynamical processes in magnetic systems have become the subject of intense research during the last two decades, initiated by the pioneering discovery of femtosecond laser-induced demagnetization in nickel. In this thesis, we develop theory for fast and ultrafast magnetization dynamics. In particular, we build relativistic theory to explain the magnetization dynamics observed at short timescales in pump-probe magneto-optical experiments and compute from first-principles the coherent laser-induced magnetization. In the developed relativistic theory, we start from the fundamental Dirac
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45

Hummert, Stephanie Maria. "Magneto-Optical Imaging of Superconducting MgB2 Thin Films." W&M ScholarWorks, 2007. https://scholarworks.wm.edu/etd/1539626854.

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Davies, Clare Elizabeth. "Deposition and properties of magneto-optic materials." Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316769.

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Xun, Xiaodong. "Characterization of magneto-optical and phase-change media." Diss., The University of Arizona, 2001. http://hdl.handle.net/10150/298761.

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This dissertation contains studies on several aspects of the media and system in the optical storage. The main subjects that have been examined are magneto-optical (MO) media, phase-change (PC) media and the optical system used for testing and characterizing these media. In the studies of MO media, we examined the thermomagnetic properties of the TbFeCo film and observed the dynamic behavior of its magnetization reversal. We introduced a novel technique to estimate the thermal coefficients, i.e., thermal conductivity and specific heat of each layer in the MO multilayer stack. In the investigat
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Zheng, Wei. "Nonlinear Optical Studies of Photoelastic Effect and Magneto-Plasmonics." W&M ScholarWorks, 2014. https://scholarworks.wm.edu/etd/1539623369.

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Nonlinear optical (NLO) processes are optical phenomena involving a nonlinear response to an applied light field. Two kinds of nonlinearities are studied in this dissertation: magnetic-induced second-harmonic generation (MSHG) interacting with surface plasmon, called "nonlinear magnetoplasmonics" (NMP), and the nonlinear index induced by a strong pump beam in Titanium doped sapphire crystal, referred to as population-induced nonlinear index effect.;The fundamentals of the major effects involved are discussed, which include: surface plasmon and its field enhancement effect, MSHG technique and p
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Sun, Fei. "Transformation Optics for Controlling DC Magnetic Field." Doctoral thesis, KTH, Elektroteknisk teori och konstruktion, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-155326.

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Based on the form-invariant of Maxwell’s equations under coordinate transformations, we extend the theoryof transformation optics to transformation magneto-statics, which can design magnets through coordinatetransformations. Some novel DC magnetic field illusions created by magnets (e.g. rescaling magnets,cancelling magnets and overlapping magnets) are designed and verified by numerical simulations. Ourresearch will open a new door to designing magnets and controlling DC magnetic fields.<br><p>QC 20141105</p>
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Camp, Howard Alan. "Measurements of the time evolution of coherent excitation." Diss., Manhattan, Kan. : Kansas State University, 2005. http://hdl.handle.net/2097/73.

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