Anomalous Small-angle X-ray Scattering Studies of Phase Separation in Bulk Amorphous PDF Download
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Languages : en
Pages : 5
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Languages : en
Pages : 5
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Author: Jeffrey John Hoyt
Publisher:
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Category :
Languages : en
Pages : 264
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Author: Yoshio Waseda
Publisher: Springer Science & Business Media
ISBN: 9783540434436
Category : Technology & Engineering
Languages : en
Pages : 232
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The production of multi layered thin films with sufficient reliability is a key technology for device fabrication in micro electronics. In the Co/Cu type multi layers, for example, magnetoresistance has been found as large as 80 % at 4. 2 K and 50 % at room temperature. In addition to such gigantic mag netoresistance, these multi layers indicate anti ferromagnetic and ferromag netic oscillation behavior with an increase in the thickness of the layers of the non magnetic component. These interesting properties of the new synthetic flmctional materials are attributed to their periodic and interracial structures at a microscopic level, although the origin of such peculiar features is not fully understood. Information on the surface structure or the number density of atoms in the near surface region may provide better insight. Amorphous alloys, frequently referred to as metallic glasses, are produced by rapid quenching from the melt. The second generation amorphous alloys, called "bulk amorphous alloys", have been discovered in some Pd based and Zr based alloy systems, with a super cooled liquid region at more than 120 K. In these alloy systems, one can obtain a sample thickness of several centime ters. Growing scientific and technological curiosity about the new amorphous alloys has focused on the fundamental factors, such as the atomic scale struc ture, which are responsible for the thermal stability with certain chemical compositions.
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Category : Materials
Languages : en
Pages : 1198
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Author: Osvaldo de Oliveira Jr
Publisher: William Andrew
ISBN: 0323497799
Category : Technology & Engineering
Languages : en
Pages : 224
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Book Description
Nanocharacterization Techniques covers the main characterization techniques used in nanomaterials and nanostructures. The chapters focus on the fundamental aspects of characterization techniques and their distinctive approaches. Significant advances that have taken place over recent years in refining techniques are covered, and the mathematical foundations needed to use the techniques are also explained in detail. This book is an important reference for materials scientists and engineers looking for a through analysis of nanocharacterization techniques in order to establish which is best for their needs. - Includes a detailed analysis of different nanocharacterization techniques, allowing readers to explore which one is best for their particular needs - Provides examples of how each characterization technique has been used, giving readers a greater understanding of how each technique can be profitably used - Covers the mathematical background needed to utilize each of these techniques to their best effect, meaning that readers can gain a full understanding of the theoretical principles behind each technique covered - Serves as an important, go-to reference for materials scientists and engineers
Author:
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ISBN:
Category : Materials
Languages : en
Pages : 754
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Author: Carl C. Koch
Publisher: William Andrew
ISBN: 0815518420
Category : Technology & Engineering
Languages : en
Pages : 785
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Nanostructured materials are one of the highest profile classes of materials in science and engineering today, and will continue to be well into the future. Potential applications are widely varied, including washing machine sensors, drug delivery devices to combat avian flu, and more efficient solar panels. Broad and multidisciplinary, the field includes multilayer films, atomic clusters, nanocrystalline materials, and nanocomposites having remarkable variations in fundamental electrical, optic, and magnetic properties.Nanostructured Materials: Processing, Properties and Applications, 2nd Edition is an extensive update to the exceptional first edition snapshot of this rapidly advancing field. Retaining the organization of the first edition, Part 1 covers the important synthesis and processing methods for the production of nanocrystalline materials. Part 2 focuses on selected properties of nanostructured materials. Potential or existing applications are described as appropriate throughout the book. The second edition has been updated throughout for the latest advances and includes two additional chapters.
Author: Margareth Kazuyo Kobayashi Dias Franco
Publisher: BoD – Books on Demand
ISBN: 1789232465
Category : Science
Languages : en
Pages : 118
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Book Description
Reasoned and based on the difference between discovery and invention, according to the traditional conception, science can be distinguished between basic science and applied science. Nevertheless, we know that the sciences are inseparable. A century or more ago, Louis Pasteur said "there is no applied science, there are applications of science." With this assertion, he establishes the logic of complementarity between them. Science certainly goes beyond its own material application and brings us to issues that have intrigued humanity for a long time. During the many years that we have been working with techniques of material characterization, we observed that this complementarity was not always understood by the researchers. In line with the reasoning that the technique joined with science generates technology, the application of techniques that use x-ray and neutron sources seems to us of fundamental importance for the development of technology. In this way, we present in this book how the existing technology of material characterization can contribute to science and applied technology. The authors who contributed with this book sought to show the importance of applying the existing techniques in the development of their works.
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Category : Power resources
Languages : en
Pages : 578
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Category :
Languages : en
Pages : 5
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The cylindrical pair correlation function has been utilized as a structural tool in the study of anisotropic phase separation in magnetron-sputtered amorphous Fe(subscript x)Ge{sub 100-x} films. Anomalous small-angle x-ray scattering (ASAXS) measurements have been performed with the scattering vector both in and oblique to the plane of the films, to search for anisotropy. The cylindrical correlation function has been calculated from these measurements, and indicates that there exist well-defined regions of electron density that are elongated (7Å by 12Å) in the direction of film growth. In addition, for a composition of x=6, these regions are well-correlated on a length scale of 27Å for those correlation vectors oriented in the plane of the film surface, whereas the correlations are far weaker and longer in length for those vectors aligned in the direction of growth. These results are in agreement with a previous qualitative model of packed, prolate ellipsoids oriented in the direction of growth.
