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Etude De La Separation De Phase Magnetique Dans Les Manganites A Effet Cmr Par Diffusion De Neutrons Aux Petits Angles
Download Etude De La Separation De Phase Magnetique Dans Les Manganites A Effet Cmr Par Diffusion De Neutrons Aux Petits Angles full books in PDF, epub, and Kindle. Read online Etude De La Separation De Phase Magnetique Dans Les Manganites A Effet Cmr Par Diffusion De Neutrons Aux Petits Angles ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis X-Ray Charge Densities and Chemical Bonding by : Philip Coppens
Download or read book X-Ray Charge Densities and Chemical Bonding written by Philip Coppens and published by International Union of Crystallography. This book was released on 1997-05-08 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the electron density distribution in molecules and solids as obtained experimentally by X-ray diffraction. It is a comprehensive treatment of the methods involved, and the interpretation of the experimental results in terms of chemical bonding and intermolecular interactions. Inorganic and organic solids, as well as metals, are covered in the chapters dealing with specific systems. As a whole, this monograph is especially appealing because of its broad interface with numerous disciplines. Accurate X-ray diffraction intensities contain fundamental information on the charge distribution in crystals, which can be compared directly with theoretical results, and used to derive other physical properties, such as electrostatic moments, the electrostatic potential and lattice energies, which are accessible by spectroscopic and thermodynamic measurements. Consequently, the work will be of great interest to a broad range of crystallographers and physical scientists.
Book Synopsis Materials Syntheses by : Ulrich Schubert
Download or read book Materials Syntheses written by Ulrich Schubert and published by Springer Science & Business Media. This book was released on 2008-11-23 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials syntheses are more complex than syntheses of inorganic or organic compounds. Materials synthesis protocols often suffer from unclarities, irreproducibility, lack in detail and lack in standards. The need to change this situation is the main motivation for this book. It collects a number of detailed protocols, ranging from organic polymers to carbonaceous and ceramic materials, from gels to porous and layered materials and from powders and nanoparticles to films.
Book Synopsis Sol-Gel Materials by : John D. Wright
Download or read book Sol-Gel Materials written by John D. Wright and published by CRC Press. This book was released on 2018-10-03 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sol-Gel processing methods, first used historically for decorative and constructional materials, were extensively developed in the last century for applications such as glasses, ceramics, catalysts, coatings, composites and fibres. Today they are reaching their full potential, enabling the preparation of new generations of advanced materials not easily accessible by other methods yet using mild, low-energy conditions. The topic is therefore increasingly included in advanced undergraduate, MSc and PhD programmes in the areas of chemistry, physics and materials science. This concise introductory text, written at the advanced undergraduate/first-year postgraduate level, is also suitable as an introduction to the development, mechanisms, chemistry, characterisation methods and applications of the technique. It provides readers with an extensive yet concise grounding in the theory of each area of the subject and details the real and potential applications and the future prospects of sol-gel chemistry.
Book Synopsis Recent Developments in Polymer Macro, Micro and Nano Blends by : P.M. Visakh
Download or read book Recent Developments in Polymer Macro, Micro and Nano Blends written by P.M. Visakh and published by Woodhead Publishing. This book was released on 2016-08-24 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent Developments in Polymer Macro, Micro and Nano Blends: Preparation and Characterisation discusses the various types of techniques that are currently used for the characterization of polymer-based macro, micro, and nano blends. It summarizes recent technical research accomplishments, emphasizing a broad range of characterization methods. In addition, the book discusses preparation methods and applications for various types of polymer-based macro, micro, and nano blends. Chapters include thermoplastic-based polymer & nano blends, applications of rubber based and thermoplastic blends, micro/nanostructures polymer blends containing block copolymers, advances in polymer-inorganic hybrids as membrane materials, synthesis of polymer/inorganic hybrids through heterophase polymerizations, nanoporous polymer foams from nanostructured polymer blends, and natural polymeric biodegradable nano blends for protein delivery. - Describes the techniques pertaining to a kind (or small number) of blends, showing specific examples of their applications - Covers micro, macro, and nano polymer blends - Contains contributions from leading experts in the field
Book Synopsis Colossal Magnetoresistive Manganites by : Tapan Chatterji
Download or read book Colossal Magnetoresistive Manganites written by Tapan Chatterji and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: The physics of transition metal oxides has become a central topic of interest to condensed-matter scientists ever since high temperature superconductivity was discovered in hole-doped cuprates with perovskite-like structures. Although the renewed interest in hole-doped perovskite manganites following the discovery of their colossal magnetoresistance (CMR) properties, began in 1993 about a decade after the discovery of high temperature superconductivity, their first investigation started as early as 1950 and basic theoretical ideas were developed during 1951-1960. Experience in sample preparation and characterization, and in growth of single crystals and epitaxial thin films, gained during the research on high temperature superconductors, and the development of theoretical tools, were very efficiently used in research on CMR manganites. In early nineties it appeared to many condensed matter physicists that although the problem of high temperature superconductivity is a difficult one to solve, a quantitative understanding of CMR phenomena might be well within reach. This book is intended to be an account of the latest developments in the phys ics of CMR manganites. When I planned this book back in 2000, I thought that research on the physics of CMR manganites would be more or less consolidated by the time this would be published. I was obviously very optimistic indeed. We are now in 2003 and we still do not have a quantitative understanding of the central CMR effect. Meanwhile the field has expanded. It is still a very active field of research on both the experimental and theoretical fronts.
Book Synopsis High Temperature Superconductivity 2 by : Anant V. Narlikar
Download or read book High Temperature Superconductivity 2 written by Anant V. Narlikar and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 585 pages. Available in PDF, EPUB and Kindle. Book excerpt: In contrast to research on the fundamental mechanisms of High-Temperature Superconductivity, in recent years we have seen enormous developments in the fabrication and application of High-Tc-superconductors. The two volumes of High Temperature Superconductivity provide a survey of the state of the technology and engineering applications of these materials. They comprise extended original research papers and technical review articles written by physicists, chemists, materials scientists and engineers, all of them noted experts in their fields. The interdisciplinary and strictly application-oriented coverage should benefit graduate students and academic researchers in the mentioned areas as well as industrial experts. Volume 1 "Materials" focuses on major technical advancements in High-Tc materials processing for applications. Volume 2 "Engineering Applications" covers numerous application areas where High-Tc superconductors are making tremendous impact.
Book Synopsis Magnetic Small-Angle Neutron Scattering by : Andreas Michels
Download or read book Magnetic Small-Angle Neutron Scattering written by Andreas Michels and published by Oxford University Press. This book was released on 2021-04-01 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph provides the first extensive treatment of magnetic small-angle neutron scattering (SANS). The theoretical background required to compute magnetic SANS cross sections and correlation functions related to long-wavelength magnetization structures is laid out. The concepts are scrutinized based on the discussion of experimental neutron data. Regarding prior background knowledge, some familiarity with the basic magnetic interactions and phenomena as well as scattering theory is desired. Besides exposing the different origins of magnetic SANS, and furnishing the basics of the magnetic SANS technique in early chapters, a large part of the book is devoted to a comprehensive treatment of the continuum theory of micromagnetics, as it is relevant for the study of the elastic magnetic SANS cross section. Analytical expressions for the magnetization Fourier components allow to highlight the essential features of magnetic SANS and to analyze experimental data both in reciprocal, as well as in real space. Later chapters provide an overview on the magnetic SANS of nanoparticles and so-called complex systems (e.g., ferrofluids, magnetic steels, spin glasses and amorphous magnets). It is this subfield where major progress is expected to be made in the coming years, mainly via the increased usage of numerical micromagnetic simulations (Chapter 7), which is a very promising approach for the understanding of the magnetic SANS from systems exhibiting nanoscale spin inhomogeneity.
Book Synopsis Application des techniques de diffusion de la lumière, des rayons X et des neutrons à l'étude des systèmes colloïdaux by : D. Espinat
Download or read book Application des techniques de diffusion de la lumière, des rayons X et des neutrons à l'étude des systèmes colloïdaux written by D. Espinat and published by Editions TECHNIP. This book was released on 1991-12 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Neutron Diffraction of Magnetic Materials by : I͡Uriĭ Aleksandrovich Izi͡umov
Download or read book Neutron Diffraction of Magnetic Materials written by I͡Uriĭ Aleksandrovich Izi͡umov and published by Springer. This book was released on 1991 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Detennination of the magnetic structure of magnetic materials is a fundamental problem that can be solved by magnetic neutron diffraction techniques. By magnetic structures we refer to the mutual alignment of the magnetic moments of the atoms in a crystal and their overall alignment relative to the crystallographic axes. Some indirect, tentative data on the magnetic structure of magnetic materials can be obtained from research on their magnetic, mechanical, thermal, and other properties. But only neutron diffraction is a unique direct method of detennining the magnetic structure of a crystal. The magnetic structure of more than one thousand crystals with magnetic order has been studied during 30 years of neutron diffraction research made on reactors in a large number of laboratories in the world. The results of this research work are extensively described in the handbook Magnetic Structures Determined by Neutron Diffraction [176]; in the present book, we will often refer to this handbook. The first extensive theoretical generalization of the principles of magnetic neutron diffraction and the results of research on magnetic structures appeared in the book by Yu. A. Izyumov and R. P. Ozerov Magnetic Neutron Diffraction [24, 134].
Book Synopsis Extrinsic Magnetotransport in Manganites and its Dependence on Mechanical Strain by : Ramesh Babu
Download or read book Extrinsic Magnetotransport in Manganites and its Dependence on Mechanical Strain written by Ramesh Babu and published by Cuvillier Verlag. This book was released on 2008-10-16 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: The extrinsic electrical transport in manganites of the type (La,A)(Mn,B)O3 (where A = Ca2+, Sr2+ or Pb2+ and B = Ru+, Ta+ or W+) has been studied on bulk ceramic and thin film samples. In particular, its dependence on reversible strain applied with a piezoelectric substrate has been investigated. The first part discusses results on bulk polycrystalline samples, (La0.7Ca0.3MnO3)/LaAlO3 (001) films forming step edge junctions (SEJ) on substrates containing lithographically defined parallel steps and La0.7Sr0.3MnO3/SrTiO3 (001) films on a bicrystal substrate containing one grain boundary. Magnetoresistance measurements have been carried out in static and in pulsed magnetic fields of μ0H = 50 T. The magnetoconductance G(H) depends on the susceptibility of a magnetically less ordered layer around the grain boundaries. In particular, the second-order grain boundary tunnelling model of Lee et al. [Lee 99] is employed to discuss the magnetoconductance data. The bulk ceramic samples of various compositions and a polycrystalline La0.7Sr0.3MnO3 film show dominating antiferromagnetic interactions in the grain boundary layer, whereas spin-glass-like disorder is concluded from transport data for the (La0.7Ca0.3MnO3)/LaAlO3 (001) SEJ. The bicrystal transport behaviour appears dominated by a small number of magnetic domains next to the bicrystal grain boundary. The second part of this work addresses the influence of a reversible strain on electrical grain boundary transport. The strain is applied through a piezoelectric pseudocubic substrate of PMN-PT (001) to the films. In detail, polycrystalline films, films grown on substrates with parallel steps of several 100 nm height and a film on a substrate containing an intentionally applied scratch were investigated. Large strain response of the junction resistance and the magnetoresistance has been observed for the SEJ films, with strong dependence on the film thickness, and is discussed within the indirect tunnelling model (mentioned above). Polycrystalline films showed a more moderate strain effect.
