Multifunctional Oxide Heterostructures - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Multifunctional Oxide Heterostructures write by Evgeny Y. Tsymbal. This book was released on 2012-08-30. Multifunctional Oxide Heterostructures available in PDF, EPUB and Kindle. 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.
Multifunctional Oxide Heterostructures
Multifunctional Oxide Heterostructures - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Multifunctional Oxide Heterostructures write by Evgeny Y. Tsymbal. This book was released on 2012-08-30. Multifunctional Oxide Heterostructures available in PDF, EPUB and Kindle. This book is devoted to the rapidly developing field of oxide thin-films and heterostructures. Oxide materials combined with atomic-scale precision in a heterostructure exhibit an abundance of macroscopic physical properties involving the strong coupling between the electronic, spin, and structural degrees of freedom, and the interplay between magnetism, ferroelectricity, and conductivity. Recent advances in thin-film deposition and characterization techniques made possible the experimental realization of such oxide heterostructures, promising novel functionalities and device concepts. The book consists of chapters on some of the key innovations in the field over recent years, including strongly correlated oxide heterostructures, magnetoelectric coupling and multiferroic materials, thermoelectric phenomena, and two-dimensional electron gases at oxide interfaces. The book covers the core principles, describes experimental approaches to fabricate and characterize oxide heterostructures, demonstrates new functional properties of these materials, and provides an overview of novel applications.
Optical Characterization of Interface Magnetization in Multifunctional Oxide Heterostructures
Optical Characterization of Interface Magnetization in Multifunctional Oxide Heterostructures - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Optical Characterization of Interface Magnetization in Multifunctional Oxide Heterostructures write by Fan Fang (Ph.D.). This book was released on 2016. Optical Characterization of Interface Magnetization in Multifunctional Oxide Heterostructures available in PDF, EPUB and Kindle. Multifunctional oxides attract much attention recently. The strong correlated electron system involves the notable properties of colossal magnetoresistance, ferroelectric tunneling and spin transport, with the coupling of electron, spin and orbital degrees of freedom. Their rich functional behavior is of potential use for nanoelectronics and data storage. Particularly interesting are the mulitferroic materials, which exhibit simultaneously electric and magnetic ordering properties. Understanding the interface coupling mechanism of these two order parameters are critical to future development of high-performance spintronic devices. The goal of this dissertation is to elucidate the interfacial magnetoelectric (ME) coupling with optical characterization method -- magnetization-induced second-harmonic generation (MSHG), which is sensitive to the interface due to the broken spatial inversion symmetry. First, ME coupling at the interface of BaTiO3 (BTO)/La0.67Sr0.33MnO3 (LSMO) is observed by applying an external electric field. The voltage-dependent magnetic contrast reveals a sharp transition from ferromagnetic (FM) to antiferromagnetic (AFM) order occurring at positive voltage (applied to LSMO contact). This novel effect is attributed to interface ME coupling. Strain or ferroelectric (FE) polarization induced mechanisms do not play an important role in this system. A new mechanism is proposed -- minority spin injection -- to modulate the interface magnetization. The minority spin injection at the interface weakens the double-exchange coupling of nearby eg electrons, thereby weakening the FM ordering. Thus the dominant AFM superexchange coupling of localized t2g electrons causes the phase transition at positive voltage. The magnetic transition is shifted to higher voltage by reducing the carrier concentration of BTO. Second, a non-multiferroic heterostructure -- SrTiO3 (STO)/La0.5Ca0.5MnO3 (LCMO)/La0.67Sr0.33MnO3 (LSMO) -- is studied to elucidate further the interface ME effect. The magnetization transition is observed but shifted to negative voltage. The LSMO is pushed to higher hole doping level due to the STO layer which acts as a hole donating layer, while the LCMO interlayer at the medium doping level displays complicated CE-type AFM phase. Thus, a negative voltage is required to lower the hole doping level of LSMO to induce the FM phase. The magnetic contrast reappears at high positive voltage, indicating the occurrence of an A-type AFM phase, which is stable at high hole doping concentration. The results of this dissertation show that the interface magnetic phase of LSMO can be controlled by an applied electric field through modulation of the hole doping level.
Thin Films and Heterostructures for Oxide Electronics
Thin Films and Heterostructures for Oxide Electronics - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Thin Films and Heterostructures for Oxide Electronics write by Satishchandra B. Ogale. This book was released on 2005-11-21. Thin Films and Heterostructures for Oxide Electronics available in PDF, EPUB and Kindle. Oxides form a broad subject area of research and technology development which encompasses different disciplines such as materials science, solid state chemistry, physics etc. The aim of this book is to demonstrate the interplay of these fields and to provide an introduction to the techniques and methodologies involving film growth, characterization and device processing. The literature in this field is thus fairly scattered in different research journals covering one or the other aspect of the specific activity. This situation calls for a book that will consolidate this information and thus enable a beginner as well as an expert to get an overall perspective of the field, its foundations, and its projected progress.
Multifunctional Oxide Heterostructures For Next-Generation Tunable RF/Microwave Electronics
Multifunctional Oxide Heterostructures For Next-Generation Tunable RF/Microwave Electronics - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Multifunctional Oxide Heterostructures For Next-Generation Tunable RF/Microwave Electronics write by Hyung Min Jeon. This book was released on 2019. Multifunctional Oxide Heterostructures For Next-Generation Tunable RF/Microwave Electronics available in PDF, EPUB and Kindle. Recent advanced radio frequency (RF) microwave device demands for low power consumption, light weight, compact package, and high performance. To achieve the high performance, applying magnetic materials is becoming indispensable in many of those devices. Thus, the role of magnetism in those devices is important high-quality magnetic materials not only improves the performance of microwave devices but also opens opportunities in developing novel concepts of devices utilizing spin wave excitation, non-reciprocal wave propagation, and the electromagnetic coupling in multiferroic materials. Among all the others, manipulating magnetic properties in multiferroic material started a couple years ago. Multiferroic materials are a group of materials that exhibit both ferrimagnetic and ferroelectric properties. By controlling its magnetic property such as ferromagnetic resonance, the low loss and tunable RF/Microwave electronics can be generated. However, the multiferroics currently under investigation suffer severely from the weak magnetoelastic effect in part due to the poor crystallinity, and in part due to the inappropriate materials chosen. Thus, the fabrication of high-quality ferrite and discovery of the suitable ferrite are paramount to apply in multiferroic material. In this research, we report a high-quality Yttrium Iron Garnet thin film and an unique Aluminum alloyed Nickel Zink Ferrite thin film. The former exhibits an extremely low magnetic damping factor, and the later show a larger magnetostriction coefficient. The microstructures of these films were characterized using X-ray diffraction, Atomic force microscopy, and transmission electron microscope. and - the magnetic properties -were characterized by Ferromagnetic Resonance. Additionally, we have observed the inverse spin-hall effect between magnetic and metal layer and demonstrated non-reciprocal wave propagation in a 20nm thin YIG film.
