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Gotowa bibliografia na temat „Ferroelectrics”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 9 czerwca 2025

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Artykuły w czasopismach na temat "Ferroelectrics"

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Zhang, Xinhao, and Bo Peng. "The twisted two-dimensional ferroelectrics." Journal of Semiconductors 44, no. 1 (January 1, 2023): 011002. http://dx.doi.org/10.1088/1674-4926/44/1/011002.

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Abstract Since the beginning of research on two-dimensional (2D) materials, a few numbers of 2D ferroelectric materials have been predicted or experimentally confirmed, but 2D ferroelectrics as necessary functional materials are greatly important in developing future electronic devices. Recent breakthroughs in 2D ferroelectric materials are impressive, and the physical and structural properties of twisted 2D ferroelectrics, a new type of ferroelectric structure by rotating alternating monolayers to form an angle with each other, have attracted widespread interest and discussion. Here, we review the latest research on twisted 2D ferroelectrics, including Bernal-stacked bilayer graphene/BN, bilayer boron nitride, and transition metal dichalcogenides. Finally, we prospect the development of twisted 2D ferroelectrics and discuss the challenges and future of 2D ferroelectric materials.

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WANG, JIE, and TONG-YI ZHANG. "PHASE FIELD STUDY OF POLARIZATION VORTEX IN FERROELECTRIC NANOSTRUCTURES." Journal of Advanced Dielectrics 02, no. 02 (April 2012): 1241002. http://dx.doi.org/10.1142/s2010135x12410020.

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Ferroelectric nanostructures are attracting considerable attention due to their unusual physical properties and potential applications in memory devices and nanoelectromechanical systems. It has been found that low-dimensional ferroelectrics, such as ferroelectric nanodots, ferroelectric nanotubes and ferroelectric thin films, exhibit polarization vortices or vortex-like domain structures due to the strong depolarization field and the size effect. The polarization vortex is regarded as a new toroidal order in ferroelectrics which is different from the rectilinear order of polarization. The vortex states of polarization are bistable and can be switched from one state to the other, which holds the potential application in next generation ferroelectric memories. This paper briefly reviews the recent work on the phase field studies of polarization vortex in ferroelectric nanostructures. The homogeneous bulk thermodynamics of ferroelectrics is first introduced based on the Landau–Devonshire theory. To describe the inhomogeneous polarization distribution in ferroelectrics, the phase field model including interface thermodynamics is then presented in the form of time-dependent Ginzburg–Landau equations.

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MA, WENHUI. "FLEXOELECTRIC EFFECT IN FERROELECTRICS." Functional Materials Letters 01, no. 03 (December 2008): 235–38. http://dx.doi.org/10.1142/s179360470800037x.

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Flexoelectric effect and its influence on the application of multifunctional ferroelectrics have been investigated. Theory of flexoelectric coupling has indicated that mechanical strain gradient can impact polarization in a way analogous to electric field. Experimentally, magnitudes of the flexoelectric coefficients have been measured in ferroelectric, incipient ferroelectric and relaxor ferroelectric perovskites. Present data of flexoelectricity suggests that such unconventional electromechanical coupling could make unique contribution to properly engineered ferroelectric thin films and nanostructures. Flexoelectric effect is expected to intensify at small dimensions and get large enough at nanoscale to significantly impact phase transition and functional response in ferroelectrics.

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Huyan, Huaixun, Linze Li, Christopher Addiego, Wenpei Gao, and Xiaoqing Pan. "Structures and electronic properties of domain walls in BiFeO3 thin films." National Science Review 6, no. 4 (July 1, 2019): 669–83. http://dx.doi.org/10.1093/nsr/nwz101.

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Abstract Domain walls (DWs) in ferroelectrics are atomically sharp and can be created, erased, and reconfigured within the same physical volume of ferroelectric matrix by external electric fields. They possess a myriad of novel properties and functionalities that are absent in the bulk of the domains, and thus could become an essential element in next-generation nanodevices based on ferroelectrics. The knowledge about the structure and properties of ferroelectric DWs not only advances the fundamental understanding of ferroelectrics, but also provides guidance for the design of ferroelectric-based devices. In this article, we provide a review of structures and properties of DWs in one of the most widely studied ferroelectric systems, BiFeO3 thin films. We correlate their conductivity and photovoltaic properties to the atomic-scale structure and dynamic behaviors of DWs.

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Ke, Changming, Jiawei Huang, and Shi Liu. "Two-dimensional ferroelectric metal for electrocatalysis." Materials Horizons 8, no. 12 (2021): 3387–93. http://dx.doi.org/10.1039/d1mh01556g.

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Two dimensional ferroelectrics with out-of-plane polarization can be engineered via layer stacking to a genuine ferroelectric metal. These 2D ferroelectrics can serve as electrically-tunable, high-quality switchable electrocatalysts.

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Kimura, Tsuyoshi. "Current Progress of Research on Magnetically-induced Ferroelectrics." Acta Crystallographica Section A Foundations and Advances 70, a1 (August 5, 2014): C6. http://dx.doi.org/10.1107/s2053273314099938.

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Among several different types of magnetoelectric multiferroics, "magnetically-induced ferroelectrics" in which ferroelectricity is induced by complex spin orders, such as spiral orders, exhibit giant direct magnetoelectric effects, i.e., remarkable changes in electric polarization in response to a magnetic field. Not a few spin-driven ferroelectrics showing the magnetoelectric effects have been found in the past decade.[1] However, their induced ferroelectric polarization is much smaller than that in conventional ferroelectrics and mostly develops only at temperatures much lower than room temperature. Thus, the quest for spin-driven ferroelectrics with room temperature operation and/or robust ferroelectric polarization is still a major challenge in magnetoelectric multiferroics research. In this presentation, I will begin with introducing the background of research on magnetically-induced ferroelectrics, and present the following current progress. Recently, some hexaferrites have been found to show direct magnetoelectric effects at room temperature and relatively low magnetic fields.[2] Furthermore these hexferrites show inverse magnetoelectric effects, that is, induction of magnetization by applying electric fields, at room temperature. The results represented an important step toward practical applications using the magnetoelectric effect in spin-driven ferroelectrics. This presentation introduces magnetism and magnetoelectricity of several types of hexaferrites which show magnetoelectric effect at temperatures above room temperature. In addition, I will also introduce our recent work on magnetoelectric perovskite manganites with large magnetically-induced ferroelectric polarization which is comparable to that in conventional ferroelectrics. This work has been done in collaboration with T. Aoyam, K. Haruki, K. Okumura, A. Miyake, K. Shimizu, and S. Hirose.

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Liu, Meiying, Jingjing Liang, Yadong Tian, and Zhiliang Liu. "Post-synthetic modification within MOFs: a valuable strategy for modulating their ferroelectric performance." CrystEngComm 24, no. 4 (2022): 724–37. http://dx.doi.org/10.1039/d1ce01567b.

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It is a great route designing new MOF ferroelectrics to enrich the scope of ferroelectrics or improving the ferroelectric performance to enhance the opportunity of applications through the strategy of post-synthetic modification (PSM).

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Gao, Liang, Ben-Lin Hu, Linping Wang, Jinwei Cao, Ri He, Fengyuan Zhang, Zhiming Wang, Wuhong Xue, Huali Yang, and Run-Wei Li. "Intrinsically elastic polymer ferroelectric by precise slight cross-linking." Science 381, no. 6657 (August 4, 2023): 540–44. http://dx.doi.org/10.1126/science.adh2509.

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Ferroelectrics are an integral component of the modern world and are of importance in electrics, electronics, and biomedicine. However, their usage in emerging wearable electronics is limited by inelastic deformation. We developed intrinsically elastic ferroelectrics by combining ferroelectric response and elastic resilience into one material by slight cross-linking of plastic ferroelectric polymers. The precise slight cross-linking can realize the complex balance between crystallinity and resilience. Thus, we obtained an elastic ferroelectric with a stable ferroelectric response under mechanical deformation up to 70% strain. This elastic ferroelectric exerts potentials in applications related to wearable electronics, such as elastic ferroelectric sensors, information storage, and energy transduction.

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PARK, Min Hyuk. "Renaissance of Ferroelectric Memories: Can They Be a Game-changer?" Physics and High Technology 30, no. 9 (September 30, 2021): 16–23. http://dx.doi.org/10.3938/phit.30.028.

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Ferroelectric memories have been studied for ∼60 years since their first suggestion in 1952. The material properties of ferroelectrics are considered ideal for universal memories with the availability of electrical program/erase and read processes. However, challenges in the physical scaling down of bulk ferroelectric materials were a critical hurdle for the success of ferroelectric materials. In 2011, ferroelectricity in HfO2-based thin film was first reported, and this unexpected discovery revived research on ferroelectric memories. In this review, the properties, history, and applications of HfO2-based ferroelectrics are reviewed, and a perspective on semiconductor devices based on them is provided.

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Chen, Zibin, Fei Li, Qianwei Huang, Fei Liu, Feifei Wang, Simon P. Ringer, Haosu Luo, Shujun Zhang, Long-Qing Chen, and Xiaozhou Liao. "Giant tuning of ferroelectricity in single crystals by thickness engineering." Science Advances 6, no. 42 (October 2020): eabc7156. http://dx.doi.org/10.1126/sciadv.abc7156.

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Thickness effect and mechanical tuning behavior such as strain engineering in thin-film ferroelectrics have been extensively studied and widely used to tailor the ferroelectric properties. However, this is never the case in freestanding single crystals, and conclusions from thin films cannot be duplicated because of the differences in the nature and boundary conditions of the thin-film and freestanding single-crystal ferroelectrics. Here, using in situ biasing transmission electron microscopy, we studied the thickness-dependent domain switching behavior and predicted the trend of ferroelectricity in nanoscale materials induced by surface strain. We discovered that sample thickness plays a critical role in tailoring the domain switching behavior and ferroelectric properties of single-crystal ferroelectrics, arising from the huge surface strain and the resulting surface reconstruction. Our results provide important insights in tuning polarization/domain of single-crystal ferroelectric via sample thickness engineering.

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Rozprawy doktorskie na temat "Ferroelectrics"

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Ivry, Yachin. "Nano ferroelectrics." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609375.

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Tavernor, Andrew. "Modelling relaxor ferroelectrics." Thesis, University of Leeds, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305874.

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Huber, J. E. "Ferroelectrics : models and applications." Thesis, University of Cambridge, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.604713.

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A systematic method for selecting actuators (devices which produce a controlled force or displacement) for a given application is developed. Performance characteristics for several classes of actuator are presented in a graphical form which allows the characteristics of the actuator to be matched to the requirements of tasks. Some conclusions are drawn regarding the suitability of ferroelectric actuators for various tasks, and the opportunity offered by the non-linear, high force and high displacement regime of behaviour in ferroelectrics. A micromechanical constitutive model for the non-linear behaviour of ferroelectric crystals is developed. This model is based on the observation that ferroelectric transformations may be treated as if they were crystal slip systems, which allows conventional crystal plasticity models to be extended to the ferroelectric case. Expressions for the instantaneous tangent properties of a ferroelectric crystal are derived. The behaviour of the constitutive model is explored. The strain and polarization response to calculated for a single crystal subjected to mechanical and electrical loading; the evolution of single crystal yield surfaces is determined. A self-consistent scheme is used in conjunction with the constitutive model to produce estimates of the response of a ferroelectric polycrystal to electrical and mechanical loading. Expressions are derived for self-consistent estimates of the instantaneous tangent properties of a ferroelectric polycrystal. Self-consistent calculations of dielectric hysteresis and "butterfly" hysteresis are compared with experimental measurements made on a commercial Lead Zirconate Titanate ceramic. Predictions of the development of a cornered ferroelectric yield surface under loading are given.

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Jung, Dong Jin. "Characterizations of integrated ferroelectrics." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613808.

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Liu, Qida. "Electromechanical creep in ferroelectrics." Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613330.

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Flores, Suarez Rosaura. "Three-dimensional polarization probing in polymer ferroelectrics, polymer-dispersed liquid crystals, and polymer ferroelectrets." Phd thesis, Universität Potsdam, 2011. http://opus.kobv.de/ubp/volltexte/2012/6017/.

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A key non-destructive technique for analysis, optimization and developing of new functional materials such as sensors, transducers, electro-optical and memory devices is presented. The Thermal-Pulse Tomography (TPT) provides high-resolution three-dimensional images of electric field and polarization distribution in a material. This thermal technique use a pulsed heating by means of focused laser light which is absorbed by opaque electrodes. The diffusion of the heat causes changes in the sample geometry, generating a short-circuit current or change in surface potential, which contains information about the spatial distribution of electric dipoles or space charges. Afterwards, a reconstruction of the internal electric field and polarization distribution in the material is possible via Scale Transformation or Regularization methods. In this way, the TPT was used for the first time to image the inhomogeneous ferroelectric switching in polymer ferroelectric films (candidates to memory devices). The results shows the typical pinning of electric dipoles in the ferroelectric polymer under study and support the previous hypotheses of a ferroelectric reversal at a grain level via nucleation and growth. In order to obtain more information about the impact of the lateral and depth resolution of the thermal techniques, the TPT and its counterpart called Focused Laser Intensity Modulation Method (FLIMM) were implemented in ferroelectric films with grid-shaped electrodes. The results from both techniques, after the data analysis with different regularization and scale methods, are in total agreement. It was also revealed a possible overestimated lateral resolution of the FLIMM and highlights the TPT method as the most efficient and reliable thermal technique. After an improvement in the optics, the Thermal-Pulse Tomography method was implemented in polymer-dispersed liquid crystals (PDLCs) films, which are used in electro-optical applications. The results indicated a possible electrostatic interaction between the COH group in the liquid crystals and the fluorinate atoms of the used ferroelectric matrix. The geometrical parameters of the LC droplets were partially reproduced as they were compared with Scanning Electron Microscopy (SEM) images. For further applications, it is suggested the use of a non-strong-ferroelectric polymer matrix. In an effort to develop new polymerferroelectrets and for optimizing their properties, new multilayer systems were inspected. The results of the TPT method showed the non-uniformity of the internal electric-field distribution in the shaped-macrodipoles and thus suggested the instability of the sample. Further investigation on multilayers ferroelectrets was suggested and the implementation of less conductive polymers layers too.<br>In dieser Arbeit wird eine zerstörungsfreie Technik zur Analyse, Optimierung, und Entwicklung neuer funktioneller Materialien für Sensoren, Wandler, Speicher und elektrooptische Anwendungen vorgestellt. Die Wärmepuls-Tomographie (engl. Thermal-Pulse Tomography, TPT) liefert dreidimensionale Abbildungen hoher Auflösung von elektrischen Feldern und Polarisationsverteilungen eines Materials. Bei dieser thermischen Methode wird ein fokussierter, gepulster Laserstrahl durch eine undurchsichtige Oberflächenelektrode absorbiert, welche sich dadurch aufheizt. Die einsetzende Wärmediffusion führt – aufgrund der Wärmeausdehnung des Materials – zu Änderungen der Probengeometrie, welche in pyroelektrischen Materialien einen Kurzschlussstrom oder eine Änderung des Oberflächenpotentials zur Folge hat. Diese wiederum enthalten wichtige Informationen über die räumliche Verteilung elektrischer Dipole und Raumladungen im untersuchten Material. Aus dem gemessenen Kurzsschlussstrom kann anschließend das interne elektrische Feld und die Polarisationsverteilung im Material mittels verschiedener Skalentransformations- und Regularisierungsmethoden rekonstruiert werden. Auf diese Weise ermöglichte die TPT-Methode erstmals die Darstellung inhomogener ferroelektrischer Schaltvorgänge in polymeren ferroelektrischen Filmen, welche mögliche Materialien für die Datenspeicherung sind. Die Ergebnisse zeigen eine typische Haftschicht im ferroelektrischen Polymer und unterstützen die Hypothese einer ferroelektrischen Umpolung auf einer der Korngröße äquivalenten Längenskala über Keimbildung und anschließendes Wachstum. Um die Lateral- und Tiefenauflösung zu untersuchen, wurden sowohl die TPT-Methode als auch die äquivalente Methode in der Zeitdomäne (Focused Laser Intensity Modulation Method, FLIMM) auf ferroelektrischen Filme mit Gitterelektroden angewendet. Die Ergebnisse beider Techniken zeigen nach der Datenauswertung mit unterschiedlichen Regularisierungs- und Scale-Methoden eine vollkommene Übereinstimmung. Des Weiteren stellte sich heraus, dass bisherige Untersuchungen der lateralen Auflösung von FLIMM diese möglicherweise überschätzen. Damit behauptet sich TPT als effiziente und verlässliche thermische Methode. Nach einer Optimierung der Optik wurde die TPT-Methode in polymerdispergierten Flüssigkristallen (polymer-dispersed liquid crystals, PDLC), welche in elektrooptischen Anwendungen von Interesse sind, angewendet. Die Ergebnisse deuten auf eine mögliche elektrostatischeWechselwirkung zwischen den COH-Gruppen des Flüssigkristalls und den Fluoratomen der verwendeten ferroelektrischen Matrix hin. Die durch rasterelektronenmikroskopische Aufnahmen (scanning electron microscopy, SEM) gewonnenen geometrischen Parameter der Flüssigkristalltröpfchen konnten mittels TPT reproduziert werden. Für weitere Anwendungen werden schwach ferroelektrische Polymermatrices vorgeschlagen. Im Bestreben neue polymere Ferroelektrete zu entwickeln und deren Eigenschaften zu optimieren, wurden neuartige Mehrschichtsysteme untersucht. Die Ergebnisse aus der TPT-Methode zeigen eine Abweichung der Uniformität der inneren Verteilung des elektrischen Feldes in den geformten Makrodipolen, was auf eine Instabilität der Probe hindeutet. Ebenfalls wurden weitere Untersuchungen an Mehrschicht-Ferroelektreten und die Anwendung von halbleitenden Polymerschichten vorgeschlagen.

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Rowley, Stephen Edward. "Quantum phase transitions in ferroelectrics." Thesis, University of Cambridge, 2011. https://www.repository.cam.ac.uk/handle/1810/252224.

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Byrne, D. F. "Domain states in nanoscale ferroelectrics." Thesis, Queen's University Belfast, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.546018.

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Nahas, Yousra. "Gauge theory for relaxor ferroelectrics." Phd thesis, Ecole Centrale Paris, 2013. http://tel.archives-ouvertes.fr/tel-01003357.

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Concomitantly with lattice disorder, there is a discrepancy between local and global scales in relaxor ferroelectrics, in that structural distortions occurring at the local scale are not reflected in the average global structure which remains cubic. There is an absence of direct implementation of the local symmetry in the modeling of relaxors, despite its considerable, but often unacknowledged, ability to encode local features. Central to the thesis is an explicit account for local gauge symmetry within the first-principles-derived effective Hamiltonian approach. The thesis thus aims to consider how an extended symmetry allowing independent transformations at different points in space can effectively bridge local features and macroscopical properties. An underlying question the thesis also seeks to answer is whether the disorder-induced non-trivial interplay between local and global scales can be described from a topological point of view

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Shieh, Jay. "Ferroelectrics : switching and cyclic behaviour." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619624.

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Książki na temat "Ferroelectrics"

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Bain, Ashim Kumar, and Prem Chand. Ferroelectrics. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2017. http://dx.doi.org/10.1002/9783527805310.

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Lallart, Mickaël. Ferroelectrics - material aspects. Rijeka: InTech, 2011.

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Lallart, Mickaël. Ferroelectrics - physical effects. Rijeka: InTech, 2011.

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School of Ferroelectrics Physics (8th 1987 Wrocław, Poland). Ferroelectrics physics: Proceedings of the VIII School of Ferroelectrics Physics. Edited by Fiedor Karol and Cach Ryszard. Wrocław: Wydawn. Uniwersytetu Wrocławskiego, 1987.

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Physics, School of Ferroelectrics. Ferroelectrics physics: Proceedings of the XIV School of Ferroelectrics Physics. Edited by Cach Ryszard. Wrocław: Wydawn. Uniwersytetu Wrocławskiego, 1988.

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Algueró, Miguel, J. Marty Gregg, and Liliana Mitoseriu, eds. Nanoscale Ferroelectrics and Multiferroics. Chichester, UK: John Wiley & Sons, Ltd, 2016. http://dx.doi.org/10.1002/9781118935743.

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Lallart, Mickae l. Ferroelectrics - characterization and modeling. Rijeka: InTech, 2011.

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Parinov, Ivan A. Ferroelectrics and superconductors: Properties and applications. Hauppauge, N.Y: Nova Science Publishers, 2011.

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Williamsburg, Workshop on Fundamental Experiments in Ferroelectrics (11th 2001 Williamsburg Virginia). Fundamental physics of ferroelectrics 2001: 11th Williamsburg Ferroelectrics Workshop : Williamsburg, Virginia, 4-7 February 2001. Melville, N.Y: American Institute of Physics, 2001.

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Gevorgian, Spartak. Ferroelectrics in Microwave Devices, Circuits and Systems. London: Springer London, 2009. http://dx.doi.org/10.1007/978-1-84882-507-9.

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Części książek na temat "Ferroelectrics"

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Tagantsev, A. K. "Weak Ferroelectrics." In Ferroelectric Ceramics, 147–61. Basel: Birkhäuser Basel, 1993. http://dx.doi.org/10.1007/978-3-0348-7551-6_5.

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Cross, L. E. "Relaxor Ferroelectrics." In Piezoelectricity, 131–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-68683-5_5.

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Scott, J. F. "Nano-Ferroelectrics." In Nanostructures: Synthesis, Functional Properties and Applications, 584–600. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-007-1019-1_34.

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Rüdiger, Andreas, and Rainer Waser. "Nanoscale Ferroelectrics." In Advances in Science and Technology, 2392–99. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/3-908158-01-x.2392.

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Sepliarsky, Marcelo, Marcelo G. Stachiotti, and Simon R. Phillpot. "Interatomic Potentials: Ferroelectrics." In Handbook of Materials Modeling, 527–45. Dordrecht: Springer Netherlands, 2005. http://dx.doi.org/10.1007/1-4020-3286-2_27.

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Cao, Wenwu. "Defects in Ferroelectrics." In Disorder and Strain-Induced Complexity in Functional Materials, 113–34. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20943-7_7.

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Mitsui, Toshio. "Ferroelectrics and Antiferroelectrics." In Springer Handbook of Materials Data, 901–34. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-69743-7_24.

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Patterson, James, and Bernard Bailey. "Dielectrics and Ferroelectrics." In Solid-State Physics, 513–44. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-02589-1_9.

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Fang, Liang, Lu You, and Jun-Ming Liu. "Ferroelectrics in Photocatalysis." In Ferroelectric Materials for Energy Applications, 265–309. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2018. http://dx.doi.org/10.1002/9783527807505.ch9.

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Etzold, K. F. "Ferroelectrics and Piezoelectrics." In RF and Microwave Passive and Active Technologies, 28–1. Boca Raton: CRC Press, 2018. https://doi.org/10.1201/9781315221854-32.

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Streszczenia konferencji na temat "Ferroelectrics"

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Nagashio, Kosuke. "Shift current photovoltaics in single domain ferroelectric SnS." In JSAP-Optica Joint Symposia, 17a_A35_1. Washington, D.C.: Optica Publishing Group, 2024. https://doi.org/10.1364/jsapo.2024.17a_a35_1.

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The bulk photovoltaic effect (BPVE) in ferroelectrics, wherein spontaneous polarization can be reversed within crystals lacking centrosymmetry, encompasses the significant contribution of ferroelectric domain walls (DWs), known as DW-PVE. Nevertheless, the separation between intrinsic BPVE within the domain and DW-PVE remains unexplored in two-dimensional (2D) ferroelectrics, notwithstanding its significant importance. In this study, we have successfully grown sizable crystals of 2D ferroelectric SnS, facilitating comprehensive yet intricate examination of domain configurations utilizing polarized optical microscopy and piezoresponse force microscopy. By properly selecting the large ferroelectric single domain within SnS crystals, uniform intrinsic BPVE across the domain was unequivocally demonstrated.

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Muha, Gregory, Guillermo Salcedo, Stefan Nikodemski, Michael Harrington, Vladimir Vasilyev, John Cetnar, Rashmi Jha, and Ahmad Islam. "Electrical Characterization of AlScN Ferroelectrics." In NAECON 2024 - IEEE National Aerospace and Electronics Conference, 257–61. IEEE, 2024. http://dx.doi.org/10.1109/naecon61878.2024.10670350.

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Gookin, Debra M., and G. W. Gross. "Effect of applied electric fields on beam coupling in ferroelectrlcs." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1986. http://dx.doi.org/10.1364/oam.1986.mv5.

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Ferroelectrics, such as BaTiO3, have large electrooptic coefficients which make them useful photorefractive materials. Diffraction efficiencies in photorefractive materials are improved by the application of electric fields. In ferroelectrics, as in nonferroelectrics, the improvement in diffraction efficiency is attributable to increased drift. However in ferroelectrics at least one other mechanism contributes to the effect of electric fields on beam coupling. When an electric field is applied to a ferroelectric, even at room temperature, some polarization reversal (reversal of the c axis) takes place. Both mechanisms can cause the direction of optical gain to switch. We present a theory of the interaction of electric fields with ferroelectric materials and the consequences of these interactions on optical beam coupling via two-wave mixing.

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Bakker, H. J., S. Hunsche, and H. Kurz. "Microscopic study of ferroelectrics with ultrashort phonon polaritons." In International Conference on Ultrafast Phenomena. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/up.1994.md.9.

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We investigate the low-frequency dielectric response of the ferroelectrics LiTaO3 and LiNbO3 via the impulsive excitation and phase-sensitive detection of THz phonon polaritons. The low-frequency dielectric response of these crystals is dominated by a ferroelectric mode of Ai symmetry. This mode leads to a strong absorption at 6 THz (200 cm−1) in LiTaO3 and to a strong absorption at 7.5 THz (250 cm−1) in LiNbO3 at room temperature The strength and frequency of this mode strongly change when the temperature is increased towards the ferroelectric phase-transition temperature (890 K for LiTaO3 and 1480 K for LiNbO3).

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Ramesh, Prashanth, and Gregory Washington. "Analysis and Design of Smart Electromagnetic Structures." In ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2008. http://dx.doi.org/10.1115/smasis2008-603.

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Use of ferroelectric materials to improve antenna performance is an area of active research. Applying an electric field across a ferroelectric used as the dielectric in an antenna enables tuning the antenna performance. Ferroelectrics also have coupled electromechanical behavior due to which it is sensitive to mechanical strains and fluctuations in ambient temperature. Use of ferroelectrics in antenna structures, especially those subject to mechanical and thermal loads, requires knowledge of the phenomenological relationship between the ferroelectric properties of interest (especially dielectric permittivity) and the external physical variables, viz. electric field(s), mechanical strains and temperature. To this end, a phenomenological model of ferroelectric materials based on the Devonshire thermodynamic theory is presented. This model is then used to obtain a relationship expressing the dependence of the dielectric permittivity on the mechanical strain, applied electric field and ambient temperature. The relationship is compared with published experimental data and other models in literature. Subsequently, a relationship expressing the dependence of antenna performance on those physical quantities is described.

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Yin, Q. R., H. F. Yu, H. R. Zeng, G. R. Li, and A. L. Ding. "High Resolution Acoustic Microscopy with Low Frequency and Its Applications in Analysis of Ferroelectrics." In ISTFA 2005. ASM International, 2005. http://dx.doi.org/10.31399/asm.cp.istfa2005p0228.

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Abstract Nondestructive observation of domain structure of ferroelectrics, dynamic behavior under external field and related phenomena is becoming significant. As a nondestructive and subsurface characterizing technique, the authors developed acoustic microscopy based on a commercial scanning probe microscope for direct observation of local ferroelectricity, elasticity and defects on several inorganic functional materials, transparent PLZT ceramics, relax-based PMN-PT crystal and lead-free bismuth titanate ceramics without any special processing (polishing or etching) to the sample. The direct observation is particularly useful and convenient for analyzing ferroelectrics/semiconductor integrated material and devices. The excitation frequency is in the range of several kHz to decades of kHz, which is much lower than that of the traditional acoustic imaging techniques. But several applications of scanning probe acoustic microscope (SPAM) involving ferroelectric samples with the resolution of 10nm were obtained. The expanding scope of application for SPAM shows exciting possibilities for non-destructive analyses in the microelectrics industry.

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Aleksandrovski, A. L., and I. I. Naumova. "Bulk crystals of ferroelectric niobates with periodic domain pattern." In The European Conference on Lasers and Electro-Optics. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/cleo_europe.1994.cwf49.

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Ferroelectrics with periodically arranged antiparallel domains are very attractive for applications in nonlinear optics,1 the major difficulty being the fabrication of perfect periodic structures. To produce bulk crystals we used Czochralski growth of lithium niobate crystals doped with Y, Dy, and with Mg as a second dopant, and barium-sodium niobate. Both crystals were grown along the ferroelectric z-axis, and lithium niobate along [ 01 1 ¯ 2 ] -direction as well (at 57° to z-axis in YZ-plane).

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Morozovska, Anna N., and Vyacheslav V. Obukhovsky. "Autowaves in ferroelectrics." In SPIE Proceedings, edited by Gertruda V. Klimusheva, Andrey G. Iljin, and Sergey A. Kostyukevych. SPIE, 2003. http://dx.doi.org/10.1117/12.545858.

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Warkentin, Andreas, and Andreas Ricoeur. "A MULTISCALE MODELING APPROACH ON MODELING VISCO–FERROELECTRIC SELF HEATING IN FERROELECTRICS." In 10th ECCOMAS Thematic Conference on Smart Structures and Materials. Patras: Dept. of Mechanical Engineering & Aeronautics University of Patras, 2023. http://dx.doi.org/10.7712/150123.9970.444496.

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Kitamura, Kenji, Xiaoyan Liu, and Kazuya Terabe. "Frozen Ferroelectrics to Mobile Ferroelectrics ~New views of LiNbO3 domain engineering~." In Photorefractive Effects, Photosensitivity, Fiber Gratings, Photonic Materials and More. Washington, D.C.: OSA, 2007. http://dx.doi.org/10.1364/pr.2007.sub7.

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Raporty organizacyjne na temat "Ferroelectrics"

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Ponomareva, Inna. Fundamental Physics of Ferroelectrics 2019. Office of Scientific and Technical Information (OSTI), May 2020. http://dx.doi.org/10.2172/1618110.

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Shrout, Thomas R., and Sei-Joo Jang. Relaxor Ferroelectrics for Electrostrictive Transducer. Fort Belvoir, VA: Defense Technical Information Center, January 1992. http://dx.doi.org/10.21236/ada248671.

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Egami, Takeshi. Atomic Structure of Mixed Ferroelectrics. Fort Belvoir, VA: Defense Technical Information Center, July 1992. http://dx.doi.org/10.21236/ada254369.

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Price, John C. Tunable Antennas Using Thin Film Ferroelectrics. Fort Belvoir, VA: Defense Technical Information Center, September 1994. http://dx.doi.org/10.21236/ada299576.

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Hoover, B. D., B. A. Tuttle, W. R. Olson, D. M. Goy, R. A. Brooks, and C. F. King. Evaluation of field enforced antiferroelectric to ferroelectric phase transition dielectrics and relaxor ferroelectrics for pulse discharge capacitors. Office of Scientific and Technical Information (OSTI), September 1997. http://dx.doi.org/10.2172/537385.

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Harmer, Martin P., and Donald M. Smyth. Nanostructure and Defect Chemistry of Relaxor Ferroelectrics. Fort Belvoir, VA: Defense Technical Information Center, July 1988. http://dx.doi.org/10.21236/ada207217.

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Eckhardt, Craig J. Crystal Engineering in Two Dimensions: Friction and Ferroelectrics. Fort Belvoir, VA: Defense Technical Information Center, October 2001. http://dx.doi.org/10.21236/ada396447.

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Smith, Ralph C., and Craig L. Hom. A Temperature-Dependent Hysteresis Model for Relaxor Ferroelectrics. Fort Belvoir, VA: Defense Technical Information Center, January 2000. http://dx.doi.org/10.21236/ada452005.

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Bhattacharya, K., and G. Ravichandran. A Novel Approach to Large Electrostriction in Ferroelectrics. Fort Belvoir, VA: Defense Technical Information Center, May 2003. http://dx.doi.org/10.21236/ada418181.

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Landis, Chad M. Computational Model for Domain Structure Evolution in Ferroelectrics. Fort Belvoir, VA: Defense Technical Information Center, January 2011. http://dx.doi.org/10.21236/ada575644.

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