Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Strain Effect In Epitaxial Oxide Heterostructures
Download Strain Effect In Epitaxial Oxide Heterostructures full books in PDF, epub, and Kindle. Read online Strain Effect In Epitaxial Oxide Heterostructures ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Strain Effect in Epitaxial Oxide Heterostructures by : Abhijit Biswas
Download or read book Strain Effect in Epitaxial Oxide Heterostructures written by Abhijit Biswas and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent decades, extensive studies have been conducted on controlling and engineering novel functionalities in transition metal oxide (TMO) heterostructures by epitaxial strain. In this chapter, we discuss popular transition metal oxide thin films in the context of various research fields that are extensively studied in condensed matter physics. These materials include La1.85Sr0.15CuO4 (a high temperature superconductor), SrRuO3 (a highly conductive ferromagnetic metal), La0.67Sr0.33MnO3 (a colossal magnetoresistive ferromagnetic metal), BiFeO3 (a multiferroic oxide), LaAlO3-SrTiO3 (a conductive oxide interface), and LaNiO3 (a strongly correlated metal). We focus on the appearance of novel functional properties from imposing epitaxial strain (compressive or tensile strain caused by the use of various lattice-mismatched substrates) on these films that cannot be observed in their bulk form. Subsequently, the intrinsic mechanisms for these novel phenomena are discussed based on experimental observations and theoretical modelling. We conclude that by using epitaxial strain, not only can thin film functionalities be tuned but many novel correlated phenomena can also be created. We believe that our collective efforts on the strain engineering of various transition metal oxide thin films will provide an insightful description of this emerging subject from a fundamental physics and nanoscale device applications point of view.
Book Synopsis Epitaxial Strain, Electric Field, and Domains Controlled Functionality Modulations in Complex Oxide Heterostructures by : Binod Paudel
Download or read book Epitaxial Strain, Electric Field, and Domains Controlled Functionality Modulations in Complex Oxide Heterostructures written by Binod Paudel and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The perovskite 3d- transitional metal complex oxides offer opportunities to construct artificial heterostructures and chemical doping of atoms with different atomic radii resulting in similar crystal structures but diverse functionalities. The discovery of such functionalities has been possible because of the advances in synthesis, which enables fabrication of oxide heterostructures in the form of thin films, thus providing a rich ground to study their functional response with external stimuli, such as strain, electric field, and chemical pressure. In this dissertation, I investigate how such parameters can modulate different functionalities magnetic (interfacial and bulk), transport, and optical, in the three-class of heterostructures, namely: lightly doped manganite, multiferroic heterostructures, and rare-earth chromites.In the first work, I study the magneto-electric coupling at the heterostructure interface of a ferroelectric PbZr0.2Ti0.8O3 (PZT) and ferromagnetic La0.67Sr0.33MnO3 (LSMO) layers grown on an Nb-doped SrTiO3 (001) substrate utilizing polarized neutron reflectometry (PNR) in consort with ab initio-based density functional theory (DFT) calculations. The working conditions of the functional device are mimicked by gating the heterostructure with a Pt top electrode to apply an external electric field, which alters the magnitude and switches the direction of the ferroelectric (FE) polarization, across the PZT layer. PNR results show that the gated PZT/LSMO exhibits interfacial magnetic phase modulation attributed to ferromagnetic (FM) to A-antiferromagnetic (A-AF) phase transitions resulting from the accumulation of holes. When the net FE polarization points towards the interface (positive), the interface does not undergo a magnetic phase transition and retains its global FM-ordered state. In addition to changes in the interfacial magnetic ordering, the global magnetization of LSMO increases. while switching the polarization from positive to negative and it decreases vice versa. DFT calculations indicate that this enhanced magnetization also correlates with an out-of-plane tensile strain, whereas the suppressed magnetization for positive polarization is attributed to out-of-plane compressive strain. These calculations also show the coexistence of FM and A-AF -phases at zero out of plane strain. Charge modulations throughout the LSMO layer appear to be unaffected by strain, suggesting that these charge-mediated effects do not significantly change the global magnetization. Such results verify that the interfacial magnetic modulations are due to co-action of strain- and charge-mediated effects, which dominate at different length scales. In the second work, I study the microstructural evolution induced magnetism and transport properties of ferroelastic La0.9Sr0.1MnO3 (LSMO) epitaxial thin films grown on SrTiO3 (001) substrates with different miscut angles. The substrate miscut angle plays a critical role in controlling the in-plane magnetic anisotropy. The microscopic origin of such magnetic anisotropy is attributed to the formation of anisotropic stripe domains along the step terraces at the surface. The Curie temperature is found to be decreased and magnetoresistance gradually increases with the increase in miscut angles. The magnetization in the LSMO films was found to be selectively modulated by the antiferrodistortive phase transition of the SrTiO3 substrate. This phenomenon has been qualitatively explained by a strain-modified Stoner–Wohlfarth model. We conclude that the magnetization modulation by the SrTiO3 phase transition depends on h, the ratio of the applied magnetic field to the saturation field. Such modulation is only visible with h
Download or read book Epitaxy written by Miao Zhong and published by BoD – Books on Demand. This book was released on 2018-03-07 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: The edited volume "Epitaxy" is a collection of reviewed and relevant research chapters, offering a comprehensive overview of recent developments in the field of materials science. The book comprises single chapters authored by various researchers and edited by an expert active in this research area. All chapters are complete in themselves but are united under a common research study topic. This publication aims at providing a thorough overview of the latest research efforts by international authors in the field of materials science as well as opening new possible research paths for further developments.
Book Synopsis Epitaxial Growth of Complex Metal Oxides by : Gertjan Koster
Download or read book Epitaxial Growth of Complex Metal Oxides written by Gertjan Koster and published by Woodhead Publishing. This book was released on 2022-04-22 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: Epitaxial Growth of Complex Metal Oxides, Second Edition reviews techniques and recent developments in the fabrication quality of complex metal oxides, which are facilitating advances in electronic, magnetic and optical applications. Sections review the key techniques involved in the epitaxial growth of complex metal oxides and explore the effects of strain and stoichiometry on crystal structure and related properties in thin film oxides. Finally, the book concludes by discussing selected examples of important applications of complex metal oxide thin films, including optoelectronics, batteries, spintronics and neuromorphic applications. This new edition has been fully updated, with brand new chapters on topics such as atomic layer deposition, interfaces, STEM-EELs, and the epitaxial growth of multiferroics, ferroelectrics and nanocomposites. Examines the techniques used in epitaxial thin film growth for complex oxides, including atomic layer deposition, sputtering techniques, molecular beam epitaxy, and chemical solution deposition techniques Reviews materials design strategies and materials property analysis methods, including the impacts of defects, strain, interfaces and stoichiometry Describes key applications of epitaxially grown metal oxides, including optoelectronics, batteries, spintronics and neuromorphic applications
Book Synopsis Epitaxial Strain and Ferroelectric Field-effect Modulation of Magnetotransport in Correlated Oxide Thin Films by : Le Zhang
Download or read book Epitaxial Strain and Ferroelectric Field-effect Modulation of Magnetotransport in Correlated Oxide Thin Films written by Le Zhang and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ferroelectric field-effect approach has been adopted by synthesizing Pb(ZrxTi1-x)O 3 (PZT)/SNNO and PZT/SIO heterostructures. Working with a prototype ferroelectric field-effect transistor, we have demonstrated robust resistance switching up to 75% and nonvolatile modulation of T MI for PZT/SNNO grown on LaAlO3 substrate. However, the PZT hardly has any effect on the SNNO for the case of STO. In both systems, we also observed a pronounced relaxation of off state resistance, showing a thermally activated behavior. The time dynamics and thermal response of the retention behavior suggest that strain-induced oxygen vacancies play a critical role in the ferroelectric field-effect instability. Meanwhile, we have also demonstrated a resistance modulation of 25% at 300 K in PZT/SNNO heterostructures. In addition, using the polarization field of PZT, we have demonstrated tunable spin relaxation. This suggests that the ferroelectric field-effect approach is a promising route to realize spintronics devices, such as the spin field-effect transistor.
Book Synopsis Nanometer-Scale Epitaxial Strain Release in Perovskite Heterostructures Using 'SrAlOx' Sliding Buffer Layers by :
Download or read book Nanometer-Scale Epitaxial Strain Release in Perovskite Heterostructures Using 'SrAlOx' Sliding Buffer Layers written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Multifunctional Oxide Heterostructures by : Evgeny Y. Tsymbal
Download or read book Multifunctional Oxide Heterostructures written by Evgeny Y. Tsymbal and published by Oxford University Press. This book was released on 2012-08-30 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume explores the rapidly developing field of oxide thin-films and heterostructures, which exhibit unusual physical properties interesting from the fundamental point of view and for device application. The chapters discuss topics that represent some of the key innovations in the field over recent years.
Book Synopsis Characterization and Strain Effect of the Epitaxial Growth Silicon-Based Heterostructures for Optoelectronic Detecting Applications by : 江彥廷
Download or read book Characterization and Strain Effect of the Epitaxial Growth Silicon-Based Heterostructures for Optoelectronic Detecting Applications written by 江彥廷 and published by . This book was released on 2011 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Epitaxial Oxide Thin Films and Heterostructures by :
Download or read book Epitaxial Oxide Thin Films and Heterostructures written by and published by . This book was released on 1994 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Oxide Thin Films and Nanostructures by : Falko P. Netzer
Download or read book Oxide Thin Films and Nanostructures written by Falko P. Netzer and published by Oxford University Press. This book was released on 2021 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxide Thin Films and Nanostructures is an interdisciplinary approach to introduce readers to the field of oxide nano-materials, that is oxides of nano-meter size and dimensions. Emphasis is put to differentiate these nanoscale oxide objects from their solid bulk oxide parents and present their properties in a pedagogic way.
Book Synopsis Physics of Ferroelectrics by : Karin M. Rabe
Download or read book Physics of Ferroelectrics written by Karin M. Rabe and published by Springer Science & Business Media. This book was released on 2007-07-20 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: The past two decades have witnessed revolutionary breakthroughs in the understanding of ferroelectric materials, both from the perspective of theory and experiment. This book addresses the paradigmatic shifts in understanding brought about by these breakthroughs, including the consideration of novel fabrication methods and nanoscale applications of these materials, and new theoretical methods such as the effective Hamiltonian approach and density functional theory.
Book Synopsis Epitaxial Oxide Thin Films and Heterostructures by :
Download or read book Epitaxial Oxide Thin Films and Heterostructures written by and published by . This book was released on 1994 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Strain-induced Phenomenon in Complex Oxide Thin Films by : Ryan Haislmaier
Download or read book Strain-induced Phenomenon in Complex Oxide Thin Films written by Ryan Haislmaier and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Complex oxide materials wield an immense spectrum of functional properties such as ferroelectricity, ferromagnetism, magnetoelectricity, optoelectricity, optomechanical, magnetoresistance, superconductivity, etc. The rich coupling between charge, spin, strain, and orbital degrees of freedom makes this material class extremely desirable and relevant for next generation electronic devices and technologies which are trending towards nanoscale dimensions. Development of complex oxide thin film materials is essential for realizing their integration into nanoscale electronic devices, where theoretically predicted multifunctional capabilities of oxides could add tremendous value. Employing thin film growth strategies such as epitaxial strain and heterostructure interface engineering can greatly enhance and even unlock novel material properties in complex oxides, which will be the main focus of this work. However, physically incorporating oxide materials into devices remains a challenge. While advancements in molecular beam epitaxy (MBE) of thin film oxide materials has led to the ability to grow oxide materials with atomic layer precision, there are still major limitations such as controlling stoichiometric compositions during growth as well as creating abrupt interfaces in multi-component layered oxide structures. The work done in this thesis addresses ways to overcome these limitations in order to harness intrinsic material phenomena.The development of adsorption-controlled stoichiometric growth windows of CaTiO3 and SrTiO3 thin film materials grown by hybrid MBE where Ti is supplied using metal-organic titatnium tetraisopropoxide material is thoroughly outlined. These growth windows enable superior epitaxial strain-induced ferroelectric and dielectric properties to be accessed as demonstrated by chemical, structural, electrical, and optical characterization techniques. For tensile strained CaTiO3 and compressive strained SrTiO3 films, the critical effects of nonstoichiometry on ferroelectric properties are investigated, where enhanced ferroelectric responses are only found for stoichiometric films grown inside of the growth windows, whereas outside of the optimal growth window conditions, ferroelectric properties are greatly deteriorated and eventually disappear for highly nonstoichiometric film compositions. Utilizing these stoichiometric growth windows, high temperature polar phase transitions are discovered for compressively strained CaTiO3 films with transition temperatures in excess of 700 K, rendering this material as a strong candidate for high temperature electronic applications. Beyond the synthesis of single phase materials using hybrid MBE, a methodology is presented for constructing layered (SrTiO3)n/(CaTiO3)n superlattice structures, where precise control over the unit cell layering thickness (n) is demonstrated using in-situ reflection high energy electron diffraction. The effects of interface roughness and layering periodicity (n) on the strain-induced ferroelectric properties for a series of n=1-10 (SrTiO3)n/(CaTiO3)n superlattice films are investigated. It is found that the stabilization of a ferroelectric phase is independent of n, but is however strongly dominated by the degree of interface roughness which is quantified by measuring the highest nth order X-ray diffraction peak splitting of each superlattice film. A counter-intuitive realization is made whereby a critical amount of interface roughness is required in order to enable the formation of the predicted strain-stabilized ferroelectric phase, whereas sharp interfaces actually suppress this ferroelectric phase from manifesting. It is shown how high-quality complex oxide superlattices can be constructed using hybrid MBE technique, allowing the ability to control layered materials at the atomic scale. Furthermore, a detailed growth methodology is provided for constructing a layered n=4 SrO(SrTiO3)n Ruddlesden-Popper (RP) phase by hybrid MBE, where the ability to deposit single monolayers of SrO and TiO2 is utilized to build the RP film structure over a time period of 5 hours. This is the first time that a thin film RP phase has been grown using hybrid MBE, where an a stable control over the fluxes is demonstrated during relatively long time periods of growth, which advantageously facilitates the synthesis of high-quality RP materials with excellent structural and chemical homogeneity.Additionally, this work demonstrates some major advancements in optical second harmonic generation (SHG) characterization techniques of ferroelectric thin film materials. The SHG characterization techniques developed here proved to be the bread-and-butter for most of the work performed in this thesis, providing a powerful tool for identifying the existence of strain-induced ferroelectric phases, including their temperature dependence and polar symmetry. The work presented in this dissertation will hopefully provide a preliminary road map for future hybrid MBE growers, scientists and researchers, to develop and investigate epitaxial strain and heterostructure layering induced phenomena in other complex oxide systems.
Book Synopsis Epitaxial Oxide Thin Films II: Volume 401 by : James S. Speck
Download or read book Epitaxial Oxide Thin Films II: Volume 401 written by James S. Speck and published by . This book was released on 1996-03-29 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our understanding and control of epitaxial oxide heterostructures has progressed along multiple frontiers including magnetic, dielectric, ferroelectric, and superconducting oxide materials. This has resulted in both independent rediscovery and the successful borrowing of ideas from ceramic science, solid-state physics, and semiconductor epitaxy. A new field of materials science has emerged which aims at the use of the intrinsic properties of various oxide materials in single-crystal thin-film form. Exploiting the potential of these materials, however, will only be possible if many fundamental and engineering questions can be answered. This book represents continued progress toward fulfilling that promise. Technical information on epitaxial oxide thin films from industry, academia and government laboratories is presented. Topics include: dielectrics; ferroelectrics; optics; superconductors; magnetics; magnetoresistance.
Book Synopsis Nanostructured Films and Coatings by : Gan-Moog Chow
Download or read book Nanostructured Films and Coatings written by Gan-Moog Chow and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanostructured films and coatings possess unique properties due to both size and interface effects. They find many applications in areas such as electronics, catalysis, protection, data storage, optics and sensors. The focus of the present book is on synthesis and processing; advanced characterization techniques; properties (including mechanical, chemical, electronic, thermal, catalytic, and magnetic); modelling of interlayer and intralayer interfaces; and applications.
Book Synopsis Correlated Functional Oxides by : Hiroaki Nishikawa
Download or read book Correlated Functional Oxides written by Hiroaki Nishikawa and published by Springer. This book was released on 2016-11-01 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces a variety of basic sciences and applications of the nanocomposites and heterostructures of functional oxides. The presence of a high density of interfaces and the differences in their natures are described by the authors. Both nanocomposites and heterostructures are detailed in depth by researchers from each of the research areas in order to compare their similarities and differences. A new interfacial material of heterostructure of strongly correlated electron systems is introduced.
Book Synopsis Dynamics of Glassy, Crystalline and Liquid Ionic Conductors by : Junko Habasaki
Download or read book Dynamics of Glassy, Crystalline and Liquid Ionic Conductors written by Junko Habasaki and published by Springer. This book was released on 2016-10-19 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the physics of the dynamics of ions in various ionically conducting materials, and applications including electrical energy generation and storage. The experimental techniques for measurements and characterization, molecular dynamics simulations, the theories of ion dynamics, and applications are all addressed by the authors, who are experts in their fields. The experimental techniques of measurement and characterization of dynamics of ions in glassy, crystalline, and liquid ionic conductors are introduced with the dual purpose of introducing the reader to the experimental activities of the field, and preparing the reader to understand the physical quantities derived from experiments. These experimental techniques include calorimetry, conductivity relaxation, nuclear magnetic resonance, light scattering, neutron scattering, and others. Methods of molecular dynamics simulations are introduced to teach the reader to utilize the technique for practical applications to specific problems. The results elucidate the dynamics of ions on some issues that are not accessible by experiments. The properties of ion dynamics in glassy, crystalline and liquid ionic conductors brought forth by experiments and simulations are shown to be universal, i.e. independent of physical and chemical structure of the ionic conductor as long as ion-ion interaction is the dominant factor. Moreover these universal properties of ion dynamics are shown to be isomorphic to other complex interacting systems including the large class of glass-forming materials with or without ionic conductivity.By covering the basic concepts, theories/models, experimental techniques and data, molecular dynamics simulations, and relating them together, Dynamics of Glassy, Crystalline and Liquid Ionic Conductors will be of great interest to many in basic and applied research areas from the broad and diverse communities of condensed matter physicists, chemists, materials scientists and engineers. The book also provides the fundamentals for an introduction to the field and it is written in such a way that can be used for teaching courses either at the undergraduate or graduate level in academic institutions.
