Effect of SrTiO3 Deposition Temperature on the Dielectric Properties of SrTiO3/YBa2Cu3O(7-delta)/LaAlO3 Structures PDF Download
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Author: Publisher: ISBN: Category : Languages : en Pages : 14
Book Description
We report on the effect of the deposition temperature of SrTiO3 on the dielectric properties of SrTiO3/YBa2Cu3O(7-delta)/LaAlO3 thin film multilayer structures. In these structures, the YBa2Cu3O(7-delta) a (YBCO) films were deposited at 800 C by laser ablation, followed by the in-situ deposition of the SrTiO3 (STO) layer at one of the following temperatures: 750 C, 650 C, 550 C, 450 C, 350 C, and 250 C. Gold (Au) films were deposited and patterned on top of the STO layer to form planar Au/STO/YBCO capacitor structures. The electrical response was studied by measuring the dielectric constant (epsilon (sub r)) and loss tangent (tan delta) of the ferroelectric film from 300-40 K, at 1.0 MHz, and at electric fields up to 100 kV/cm. Our results show 750 C to be a deposition temperature which allows for large variations of epsilon(sub r) with limited enhancement of tan delta, while lower deposition temperatures cause a reduction of the induced change in epsilon(sub r) and an increase in tan delta with applied field.
Author: Publisher: ISBN: Category : Languages : en Pages : 14
Book Description
We report on the effect of the deposition temperature of SrTiO3 on the dielectric properties of SrTiO3/YBa2Cu3O(7-delta)/LaAlO3 thin film multilayer structures. In these structures, the YBa2Cu3O(7-delta) a (YBCO) films were deposited at 800 C by laser ablation, followed by the in-situ deposition of the SrTiO3 (STO) layer at one of the following temperatures: 750 C, 650 C, 550 C, 450 C, 350 C, and 250 C. Gold (Au) films were deposited and patterned on top of the STO layer to form planar Au/STO/YBCO capacitor structures. The electrical response was studied by measuring the dielectric constant (epsilon (sub r)) and loss tangent (tan delta) of the ferroelectric film from 300-40 K, at 1.0 MHz, and at electric fields up to 100 kV/cm. Our results show 750 C to be a deposition temperature which allows for large variations of epsilon(sub r) with limited enhancement of tan delta, while lower deposition temperatures cause a reduction of the induced change in epsilon(sub r) and an increase in tan delta with applied field.
Author: Gregory S. Rohrer Publisher: Cambridge University Press ISBN: 9780521663793 Category : Science Languages : en Pages : 554
Book Description
One of the motivating questions in materials research today is, how can elements be combined to produce a solid with specified properties? This book is intended to acquaint the reader with established principles of crystallography and cohesive forces that are needed to address the fundamental relationship between the composition, structure and bonding. Starting with an introduction to periodic trends, the book discusses crystal structures and the various primary and secondary bonding types, and finishes by describing a number of models for predicting phase stability and structure. Containing a large number of worked examples, exercises, and detailed descriptions of numerous crystal structures, this book is primarily intended as an advanced undergraduate or graduate level textbook for students of materials science. It will also be useful to scientists and engineers who work with solid materials.
Author: Robert E. Collin Publisher: John Wiley & Sons ISBN: 9788126515288 Category : Microwave devices Languages : en Pages : 948
Book Description
About The Book: The book covers the major topics of microwave engineering. Its presentation defines the accepted standard for both advanced undergraduate and graduate level courses on microwave engineering. It is an essential reference book for the practicing microwave engineer
Author: Paolo Mele Publisher: Springer Nature ISBN: 3030233030 Category : Technology & Engineering Languages : en Pages : 369
Book Description
This book provides readers with a comprehensive overview of the science of superconducting materials. It serves as a fundamental information source on the actual techniques and methodologies involved in superconducting materials growth, characterization and processing. This book includes coverage of several categories of medium and high-temperature superconducting materials: cuprate oxides, borides, and iron-based chalcogenides and pnictides. Provides a single-source reference on superconducting materials growth, characterization and processing; Bridges the gap between materials science and applications of superconductors; Discusses several categories of superconducting materials such as cuprate oxides, borides, and iron-based chalcogenides and pnictides; Covers synthesis, characterization, and processing of superconducting materials, as well as the nanoengineering approach to tailor the properties of the used materials at the nanoscale level.
Author: Shriram Ramanathan Publisher: Springer Science & Business Media ISBN: 1441906649 Category : Technology & Engineering Languages : en Pages : 344
Book Description
Thin Film Metal-Oxides provides a representative account of the fundamental structure-property relations in oxide thin films. Functional properties of thin film oxides are discussed in the context of applications in emerging electronics and renewable energy technologies. Readers will find a detailed description of deposition and characterization of metal oxide thin films, theoretical treatment of select properties and their functional performance in solid state devices, from leading researchers. Scientists and engineers involved with oxide semiconductors, electronic materials and alternative energy will find Thin Film Metal-Oxides a useful reference.
Author: Roger Wördenweber Publisher: Walter de Gruyter GmbH & Co KG ISBN: 3110456249 Category : Science Languages : en Pages : 590
Book Description
By covering theory, design, and fabrication of nanostructured superconducting materials, this monograph is an invaluable resource for research and development. Examples are energy saving solutions, healthcare, and communication technologies. Key ingredients are nanopatterned materials which help to improve the superconducting critical parameters and performance of superconducting devices, and lead to novel functionalities. Contents Tutorial on nanostructured superconductors Imaging vortices in superconductors: from the atomic scale to macroscopic distances Probing vortex dynamics on a single vortex level by scanning ac-susceptibility microscopy STM studies of vortex cores in strongly confined nanoscale superconductors Type-1.5 superconductivity Direct visualization of vortex patterns in superconductors with competing vortex-vortex interactions Vortex dynamics in nanofabricated chemical solution deposition high-temperature superconducting films Artificial pinning sites and their applications Vortices at microwave frequencies Physics and operation of superconducting single-photon devices Josephson and charging effect in mesoscopic superconducting devices NanoSQUIDs: Basics & recent advances Bi2Sr2CaCu2O8 intrinsic Josephson junction stacks as emitters of terahertz radiation| Interference phenomena in superconductor-ferromagnet hybrids Spin-orbit interactions, spin currents, and magnetization dynamics in superconductor/ferromagnet hybrids Superconductor/ferromagnet hybrids
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Author: Gregory S. Rohrer
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