Structural Magnetic Dielectric Electrical Optical And Thermal Properties Of Nanocrystalline Materials
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Structural Magnetic Dielectric Electrical Optical And Thermal Properties Of Nanocrystalline Materials
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Author : Anju Anju
language : en
Publisher: Mdpi AG
Release Date : 2022-02-09
Structural Magnetic Dielectric Electrical Optical And Thermal Properties Of Nanocrystalline Materials written by Anju Anju and has been published by Mdpi AG this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-02-09 with categories.
This book is a collection of the research articles and review article, published in special issue "Structural, Magnetic, Dielectric, Electrical, Optical and Thermal Properties of Nanocrystalline Materials: Synthesis, Characterization and Application".
Advanced Spinel Ferrite Nanocomposites For Electromagnetic Interference Shielding Applications
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Author : Raghvendra Singh Yadav
language : en
Publisher: Elsevier
Release Date : 2020-10-29
Advanced Spinel Ferrite Nanocomposites For Electromagnetic Interference Shielding Applications written by Raghvendra Singh Yadav and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-10-29 with Science categories.
Advanced Spinel Ferrite Nanocomposites for Electromagnetic Interference Shielding Applications presents recent developments in advanced spinel ferrite nanocomposites for electromagnetic interference shielding, including microwave absorption applications. The book includes the basics of shielding mechanisms, synthesis of advanced nanocomposites, and characterization, as well as results analysis. It also discusses the relationship between nanocomposite structure and physical properties. The book systematically explores how spinel ferrite nanoparticle composites are utilized with polymer, carbon source materials (carbon nanotube, graphene, etc.), metal nanoparticles, metal oxide nanoparticles, hard ferrite nanoparticles, glass, rubber, wood, fabrics/textiles, and cement/concrete in the development of advanced spinel ferrite nanocomposites for electromagnetic interference shielding application. Academics, scientists, engineers, students, and industrial researchers will find this book beneficial. Provides an overview of recent developments on advanced spinel ferrite nanocomposites for electromagnetic interference shielding Outlines fundamental concepts of electromagnetic shielding mechanisms in nanocomposites Explores the design of a variety of nanocomposites, discussion on their structure and physical properties, used for electromagnetic shielding applications
Fundamental Properties Of Nanostructured Materials Proceedings Of The National School Of The Condensed Matter Group
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Author : Dino Fiorani
language : en
Publisher: World Scientific
Release Date : 1994-10-26
Fundamental Properties Of Nanostructured Materials Proceedings Of The National School Of The Condensed Matter Group written by Dino Fiorani and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994-10-26 with categories.
The purpose of this school, addressed to young researchers and graduate students (physicists, chemists and engineers), was to provide the basis of fundamental properties of nanostructured materials and an introduction to more specialized and up-to-date topics. The topics were remarkably interdisciplinary, covering theory, materials preparation, structural characterization, thermodynamic aspects and mechanical, optical, electrical and magnetic properties.
Magnetic Heterostructures
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Author : H. Zabel
language : en
Publisher: Springer
Release Date : 2007-10-26
Magnetic Heterostructures written by H. Zabel and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-10-26 with Science categories.
Heterostructures consist of combinations of different materials, which are in contact through at least one interface. Magnetic heterostructures combine different physical properties which do not exist in nature. This book provides the first comprehensive overview of an exciting and fast developing field of research, which has already resulted in numerous applications and is the basis for future spintronic devices.
Emerging Research In Science And Engineering Based On Advanced Experimental And Computational Strategies
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Author : Felipe de Almeida La Porta
language : en
Publisher: Springer Nature
Release Date : 2020-01-02
Emerging Research In Science And Engineering Based On Advanced Experimental And Computational Strategies written by Felipe de Almeida La Porta and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-01-02 with Technology & Engineering categories.
In this book, the authors discuss some of the main challenges and new opportunities in science and engineering research, which involve combining computational and experimental approaches as a promising strategy for arriving at new insights into composition–structure–property relations, even at the nanoscale. From a practical standpoint, the authors show that significant improvements in the material/biomolecular foresight by design, including a fundamental understanding of their physical and chemical properties, are vital and will undoubtedly help us to reach a new technological level in the future.
Advanced Ceramic Materials
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Author : Mohsen Mhadhbi
language : en
Publisher: BoD – Books on Demand
Release Date : 2021-05-05
Advanced Ceramic Materials written by Mohsen Mhadhbi and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-05-05 with Technology & Engineering categories.
This book examines exciting advancements in the field of ceramics, including nanotechnology, clean energy, and tribology as well as fundamental concepts like defects and structure. It is a comprehensive discussion on how today’s ceramics are processed and used in many of today’s critical technologies. It discusses current techniques for synthesizing durable and cost-effective ceramic components with biocompatibility, complexity, and high precision. This book is a comprehensive reference for researchers, engineers, dental clinicians, biologists, academics, and students interested in ceramics.
Nanomaterials
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Author : Hardev Singh Virk
language : en
Publisher: Trans Tech Publications Ltd
Release Date : 2014-11-07
Nanomaterials written by Hardev Singh Virk and has been published by Trans Tech Publications Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-11-07 with Technology & Engineering categories.
The present volume Nanomaterials: Basic Concepts and Applications, as the title suggests, deals with basic concepts and applications of anomaterials, a buzz word in the modern world of Science and Technology. Because of advanced characterization and new fabrication techniques, nanomaterials are now central to multiple disciplines, including materials science, chemistry, physics, engineering and medicine. This special volume under Solid State Phenomena series will present an overview of recent research developments, including synthesis, characterization, and applications, in Nanoelectronics, Luminescence, Drug Delivery, Memristors, Solar Cells and Semiconductors.
Optical Properties Of Polymers
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Author : G.H. Meeten
language : en
Publisher: Springer
Release Date : 1986-10-31
Optical Properties Of Polymers written by G.H. Meeten and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986-10-31 with Medical categories.
Understanding Magnetic And Optical Properties Of Lanthanide Doped Oxide Nanospinels And Heterometallic Formate Metal Organic Frameworks
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Author : Matthew Charles Ellis
language : en
Publisher:
Release Date : 2020
Understanding Magnetic And Optical Properties Of Lanthanide Doped Oxide Nanospinels And Heterometallic Formate Metal Organic Frameworks written by Matthew Charles Ellis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with Chemistry, Physical and theoretical categories.
This dissertation is composed into two primary portions defined by the material types investigated. The first part is concerned with the magneto- and thermo-optical properties of trivalent lanthanide-doped metal-oxides using europium as a probe of the photophysical mechanisms in play. These works offer important insight to observed properties that have not previously been understood and will allow for more directed studies for the use of such materials in commercial applications. The second part is concerned with the synthesis and magnetic properties of novel hetermetallic perovskite-like metal-organic frameworks, providing a route to tune the multiferroic behavior through variations in the composition of the two metals involved. In the first part of this dissertation the magneto- and thermo-optical properties of known nanospinels (AB2X4), zinc aluminate and zinc gallate, and analogous ß-gallium oxide nanoparticles doped with trivalent europium are studied using optical spectroscopy methodologies under applied high magnetic field and extreme temperature conditions. Lanthanide photophysics have been studied in depth for many decades due to their narrow line-like absorption and emission lines, despite being parity forbidden transitions. Lanthanides differ considerably from transition metal emitters in that the characteristics which lift the degeneracy in energy states are very different, resulting in many differences in the photophysical properties of materials containing those atoms. Lanthanides, however, differ from other common emitters in other ways, particularly in their relative quantum efficiencies and quantum yields. Due to the aforementioned parity forbidden nature of trivalent lanthanide excitation the quantum yields are very low due to poor absorption, despite very high quantum efficiencies. Research into materials containing lanthanides has continued to increase recently as methods of circumventing the poor absorption have increased quantum yields significantly and paved the way for commercial applications in solid-state lighting. In the last twelve years there has been additional interest in understanding the effects of temperature and applied magnetic field on lanthanide containing materials. Theoretical predictions have been made to explain observations made at moderately low temperatures (∼77 K) but experimental confirmation through a wide range of host materials and methods is limited. Studies of various metal-oxide hosts ranging from the nano- to bulk size regimes have been undertaken under applied high magnetic field using pulsed magnet systems. These studies have made a range of observations, including significant emission quenching, hysteresis-like behavior in emission recovery, and small shifts and changes in Stark splitting patterns as a function of applied magnetic field. There has been very little proposed to explain the mechanism that leads to emission quenching and hysteresis-like behavior (bistability), but the minute changes in Stark patterns and peak positions has been proposed to be the result of Zeeman splitting effects and changes in the local symmetry of the lanthanide ion. Lanthanides have also made an increased appearance in magnetic applica- tions as single-molecule magnets, most notably europium oxide, due to the unique behaviors of lanthanides under an applied magnetic field. This has widened the field of potential applications to include quantum computing and other spinelectronic applications. In this work a series of analogous metal-oxide nanoparticles are doped with trivalent europium and probed using optical spectroscopy at extreme temperatures as low as 4.2 K and, for the first time, in a persistent field magnet at high applied field. Using established theory the Zeeman splitting effects will be calculated to predict any relative shifts in Stark peak positions. Additionally, accepted theory will be used to verify that changes in Stark splitting patterns are likely due to Zee- man splitting alone, and not changes in local symmetry, as this splitting can lead to the separation of energy levels such that J-level mixing is reduced in at least one level and a secondary emission line exists. A simple mechanism is also proposed that functionally explains the emission quenching and bistabilities observed in recovery that is supported by thermo-optical data and a previously proposed model for temperature behavior in lanthanides based on Mott-Seitz theory. By using analogous hosts as controls it has been determined that the observed properties are due, not just to the field effects on lanthanide ions, but a combination of lanthanide properties and those of the host material. In fact, while the extremely limited tuning potential of lanthanide energy states are extremely important in facilitating the observed behaviors, their nature prohibits them from being useful in tuning them. Thus it has been concluded that the ability to manipulate these properties is primarily dependent on changes to the composition and structure of the host. In the second part of this dissertation a range of metal-metal ratios in a hetermetallic perovskite-like metal-organic framework is synthesized and probed to study the relationships between metal composition and magnetic properties. Since multiferroic behavior was first reported in metal-organic framework materials the field has grown considerably, with the past ten years seeing an explosion of studies to better understand the nature of these materials and the various ways these properties can be manipulated. This field has predominantly focused on homometallic ABX3 perovskite-like metal-organic frameworks and the tuning of these materials through structural manipulation via substitutions of the three ions (A, B and X). More recent studies have focused on tuning through changes in particle size and limited studies on heterometallic structures, typically with 50/50 metal ratios, on a handful of transition metal combinations. The investigation of the effects of particle size have also led to new synthetic routes, including microwave-assisted synthesis, which provide size control, substantially reduce the time of synthesis, and increase energy efficiency while lowering the environmental impact. This work relies on traditional solvothermal synthesis methods to investigate a range of metal-metal ratios in dimethylammonium nickelx manganese1-x formate metal-organic framework materials and their relative magnetic and electrical properties. Several relationships between these properties and the metal composition have been identified in addition to crystal growth size. It is also reported that the combination of metals, in which one is known to be multiferroic and the other is not, can and, in this case, will result in a hybrid material that maintains the desired multiferroic behavior. This dissertation seeks to broadly increase the understanding of various magnetic and electronic properties and relationships to structure in materials with significant promise in important fields and allow for more efficiently directed research in technical applications. Chapter 1 provides a thorough background and introduction to the theories and ideas used throughout this dissertation. In the first half an introduction to conventional lanthanide pho- tophysics provides an understanding of the unique nature of lanthanides relative to organic and transition metal emitters that in part leads to the difficulties of understanding the magnetic and thermal properties. A brief introduction is also provided to provide context for the analogous hosts used in this work which have allowed preliminary examination of the effects of manipulating various sites in the lattice. The second half of chapter 1 describes metal-organic frameworks and introduces the concept of multiferroics and provides an understanding of the significance of such materials. Chapter 2 provides introductions to the various methodologies used throughout this dissertation to probe the properties of various methods. Chapters 3 and 4 describe the synthetic methods and primary experimental results and discus- sion obtained through the study of trivalent europium doped at 5% in zinc aluminate, zinc gallate, and ß-gallium oxide nanoparticles under applied high magnetic field and extreme temperature conditions respectively. Chapters 5 and 6 are concerned with the synthetic methods and structural, magnetic, and dielectric properties of dimethylammonium nickelx manganese1-x formate metal-organic framework single crystals and the relationships that relate many of these properties. Chapter 7 provides a summary of the most significant results of the prior chapters and a direction for future work to better understand and further validate the ideas proposed by this dissertation.
Bibliography
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Author : Pierre Villars
language : en
Publisher: Walter de Gruyter
Release Date : 2012-12-21
Bibliography written by Pierre Villars and has been published by Walter de Gruyter this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-21 with Science categories.
By browsing about 10 000 000 scientific articles of over 200 major journals mainly in a 'cover to cover approach' some 200 000 publications were selected. The extracted data is part of the following fundamental material research fields: crystal structures (S), phase diagrams (also called constitution) (C) and the comprehensive field of intrinsic physical properties (P). This work has been done systematically starting with the literature going back to 1900. The above mentioned research field codes (S, C, P) as well as the chemical systems investigated in each publication were included in the present work. The aim of the Inorganic Substances Bibliography is to provide researchers with a comprehensive compilation of all up to now published scientific publications on inorganic systems in only three handy volumes.