Metallic Glasses Investigation Of Electronic Structure And Its Relationship To Physical Properties
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Metallic Glasses Investigation Of Electronic Structure And Its Relationship To Physical Properties
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Author : W. A. Hines
language : en
Publisher:
Release Date : 1984
Metallic Glasses Investigation Of Electronic Structure And Its Relationship To Physical Properties written by W. A. Hines and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with categories.
This report summarizes the work which was completed during the first four years of the research program (October 1, 1979 to September 30, 1983). Included are: (1) a NMR and magnetic susceptibility study of several rapidly quenched Ni-Pd-P, Ni-Pt-P and Ni-P metallic glasses. (2) a magnetization study of the RE100-xAlx amorphous alloys (where RE is a rare earth element), (3) a NMR, magnetization and x-ray diffraction study of crystalline Fe3-xNixSi and Metglas 2605 CO (Fe67Co18B14Si1), (4) a NMR and magnetic susceptibility study of the Ca100-xAlx metallic glass system, (5) a magnetization study of some Co-Nb-B and Fe-Nb-B metallic glasses, (6) an EXAFS study of Metaglas 2605 CO and (7) a XANES study of the (Ni0.50Pt0.50)75P25 metallic glass system. In addition, this report described in complete detail the progress during the past year (October 1, 1983 to September 30, 1984) which includes: (1) a spin-echo NMR study of the atomic environment in the Fe100-xBx metallic glass system and (2) a low field magnetization study of the magnetic anisotropy in Metglas 2605 CO ribbons. Finally, this report describes the status of experiments currently in progress which includes: (1) optical properties of the Ni100-xPx metallic glasses and (2) Mossbauer study of the Metglas 2605 CO system. Originator supplied keywords include: Electronic structure, Density of states, Atomic structure; Specific heat.
Electronic Structure And Stability Of Metallic Glasses
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Author : Jan Tauc
language : en
Publisher:
Release Date : 1980
Electronic Structure And Stability Of Metallic Glasses written by Jan Tauc and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with categories.
The work was concentrated on deepening our understanding of the properties of electrons in metallic glasses and amorphous thin films and their role in determining the atomic arrangement in these materials. It includes a photoemission study of Nb-Ni glasses, an analysis of an electronic contribution to the free energy of a binary liquid that determines the atomic correlations, EXAFS studies of the structure of Pb-Ge quenched glasses and amorphous thin films, optical studies of amorphous Au-Si system, and a study of the magneto-optic effect in Fe80B20 metallic glass. (Author).
Characterization Of Structure And Dynamics Of Metallic And Organic Glasses Using Electron Microscopy
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Author : Debaditya Chatterjee
language : en
Publisher:
Release Date : 2023
Characterization Of Structure And Dynamics Of Metallic And Organic Glasses Using Electron Microscopy written by Debaditya Chatterjee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023 with categories.
Glassy states are commonly observed across metallic, organic, and ceramic materials. They exhibit unique mechanical, thermal, and electronic properties. Metallic glasses are stronger than regular metals while being as pliable as plastics, but their wide-spread technological adoption is hindered by our poor understanding of their atomic ordering. Organic glasses have applications ranging from electronics to pharmaceuticals. Glasses lack long-range order, and their properties are mediated by nano-scale ordering. Experimental characterization of glassy structures is incredibly challenging due to the awesome complexity of their nanostructures and a lack of characterization techniques that can probe the local ordering and structural relaxation processes with nanometer-scale spatial resolution. Characterization techniques based on transmission electron microscopy (TEM) probe the structure and dynamics of such systems with nanometer-scale spatial resolution. Structural studies on metallic and organic glasses using 4-dimensional scanning transmission electron microscopy (4D STEM) reveal varying length scales of ordering in these systems and their impact on physical properties, at unprecedented spatial resolution. Electron correlation microscopy (ECM) analysis on time-resolved in situ thermal annealed TEM data lets us study glassy dynamics and reveals spatially heterogeneous dynamics in the bulk and at the surface of metallic glass nanowires. The techniques developed, and the mechanisms of structural ordering and relaxation dynamics revealed in these investigations, have implications on the synthesis, processing, and characterization of glassy systems with controlled thermal, electronic and mechanical properties, including growth of ultrastable metallic glass phases and molecular glasses with tunable structural anisotropy for organic electronics applications, fabrication of glassy nanostructures by superplastic forming, and control of surface crystallization.
Relationships Between Electronic Structure And Stability Of Metallic Glasses
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Author : F. Abeles
language : en
Publisher:
Release Date : 1984
Relationships Between Electronic Structure And Stability Of Metallic Glasses written by F. Abeles and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with categories.
Amorphous Au-Ge and Ag-Ge alloy films were prepared by co-evaporation on low-temperature (15-20K) substrates under ultra-high vacuum for Ge concentrations between 20 and 40 at.%. Changes in short-range order have been observed by room-temperature electron diffraction experiments for Ge concentrations larger than 30 at.%. The d.c. electrical resistivity and the optical properties of the as-deposited amorphous metallic alloys are examined in detail as a function of composition. The Drude model with a constant relaxation time is found to reproduce the low-energy optical data satisfactorily.
Metallic Glasses
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Author : Behrooz Movahedi
language : en
Publisher: BoD – Books on Demand
Release Date : 2016-08-17
Metallic Glasses written by Behrooz Movahedi 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 2016-08-17 with Technology & Engineering categories.
Metallic glasses and amorphous materials have attracted much more attention in the last two decades. A noncrystalline solid produced by continuous cooling from the liquid state is known as a glass. From the other point of view, a noncrystalline material, obtained by any other process, for example, vapor deposition or solid-state processing methods such as mechanical alloying, but not directly from the liquid state, is referred to as an amorphous material. At this moment, bulk metallic glasses (BMG) are appearing as a new class of metallic materials with unique physical and mechanical properties for structural and functional usage. Extreme values of strength, fracture toughness, magnetic properties, corrosion resistance, and other properties have been registered in BMG materials.
Glassy Metals
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Author : Ryusuke Hasegawa
language : en
Publisher: CRC Press
Release Date : 2017-11-29
Glassy Metals written by Ryusuke Hasegawa and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-11-29 with categories.
Covers: structure of metallic glass alloys; theory of magnetism in noncrystalline solids; electronic structure of metallic glasses; magnetism in transition metal base amorphous alloys; application of metallic glasses in low-frequency magnetic devices; magnetic material properties and applications of metallic glasses in electronic devices; rare-earth transition metal base alloys; corrosion properties of amorphous alloys.
The Magnetism Of Amorphous Metals And Alloys
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Author : Wai-yim Ching
language : en
Publisher: World Scientific
Release Date : 1995-08-31
The Magnetism Of Amorphous Metals And Alloys written by Wai-yim Ching and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995-08-31 with Technology & Engineering categories.
Contents:Theory of Magnetism in Amorphous Transition Metals and Alloys (Y Kakehashi & H Tanaka)Electronic Structure Calculations in Magnetic Metallic Glasses (W Y Ching)Random Anisotropy in Amorphous Alloys (E M Chudnovsky)Magnetic Properties of Vapor-Quenched Amorphous and Metastable Crystalline Alloys (C L Chien)Neutron Scattering Studies of the Spin Dynamics of Amorphous Alloys (J W Lynn & J A Fernandez-Baca)Numerical Studies of Magnons in Amorphous Magnets (D L Huber)Magnetism and Magneto-Optics of Rare Earth-Transition Metal Glasses and Multilayers (D J Sellmyer et al.) Readership: Materials scientists and condensed matter physicists. keywords:Amorphous Magnetism;Metals, Alloys and Multi-Layers;Electronic Structure;Random Anisotropy;Spin Dynamics
Government Reports Announcements Index
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Author :
language : en
Publisher:
Release Date : 1988
Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Government publications categories.
Fy Us Air Force Plan For Defense Research Sciences
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Author :
language : en
Publisher:
Release Date : 1984
Fy Us Air Force Plan For Defense Research Sciences written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Aeronautics, Military categories.
Metallic Glasses
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Author : Dragica Minić
language : en
Publisher: BoD – Books on Demand
Release Date : 2020-02-05
Metallic Glasses written by Dragica Minić 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 2020-02-05 with Technology & Engineering categories.
The term "metallic glasses" is widely used to denote the amorphous alloys obtained by rapid quenching techniques. These materials are characterized by short range atom ordering without translational periodicity of the structure. Kinetic and thermodynamic metastability is one of the main characteristics generally related to metallic glasses, while their thermally induced microstructural transformations could result in deterioration or improvement of the functional properties. Due to their favorable magnetic, electrical, mechanical, and anti-corrosion properties, metallic glasses as new and attractive materials have found application in many areas of modern industries - electronics, construction industry, aerospace industry; as well as chemistry, biomedicine, and surgery.