Three Dimensional Magnetic Domain Imaging With Polarized Neutrons
Download Three Dimensional Magnetic Domain Imaging With Polarized Neutrons full books in PDF, epub, and Kindle. Read online free Three Dimensional Magnetic Domain Imaging With Polarized Neutrons ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
| Author | : Alexandra R. Delmore |
| Publisher | : |
| Total Pages | : 38 |
| Release | : 2017 |
| Genre | : |
| ISBN | : |
Application and fundamental understanding of magnetic materials requires knowledge of their properties and phase diagrams, which depend on the structure and dynamics of magnetic domains. Current techniques for studying magnetic domains are limited to imaging near-surface magnetic structure. Techniques for investigating bulk magnetic structure are under development, particularly for applications in electronics and superconductivity. This study investigates the feasibility of observing bulk magnetic domain structure using polarized neutron imaging and tomography. Polarized neutrons are advantageous for studying internal magnetic structure because they penetrate materials, and their spin-polarizations are sensitive to magnetic fields. This study experimentally tested the depolarization of neutrons in five different materials with known magnetic order using PONTO, an instrument at Helmholtz-Zentrum Berlin (Germany) that uses a polarization-sensitive filter and analyzer to measure neutron depolarization in magnetic samples. Magnetic structure was observed when samples were subjected to magnetic fields to increase magnetization, and to cooling beneath the Curie temperature. Samples measured at zero field and room temperature randomly depolarized the neutron beam because their domains are smaller than the resolution of PONTO. Successful observation of magnetic effects indicates the promise of polarized neutron imaging for studying bulk magnetic domain structure; however, further development of imaging methods is necessary for understanding the connection between neutron depolarization and domain structure.
| Author | : Dinesh K. Aswal |
| Publisher | : Springer Nature |
| Total Pages | : 368 |
| Release | : 2022-04-12 |
| Genre | : Science |
| ISBN | : 9811662738 |
This book comprehensively presents the concepts of neutron physics and imaging including neutron properties, neutron matter interaction, neutron imaging, comparison with X-ray and physics and design of neutron sources. It discusses how neutron imaging has gained importance as a powerful non-destructive technique to understand the internal structures of materials/engineered components in wide range of industries by increasing their applicability and efficiency. The book also covers the topics of neutron optics and detectors, basic principles of neutron radiography and tomography, related standards, safety, metrology and regulations in neutron imaging. The book presents applications of neutron imaging in the areas of aerospace industry, nuclear power and manufacturing industry, materials science and engineering, geomechanics, national security, biological, and medical domain. Given its scope, the book will be highly beneficial for postgraduate students, researchers and industry professionals working in the area of engineering and physics, especially non-destructive testing and non-destructive evaluation through neutron imaging.
| Author | : Yurii A. Izyumov |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 607 |
| Release | : 2012-12-06 |
| Genre | : Science |
| ISBN | : 1468407120 |
The inter action between the magnetic field generated by the neutron and the magnetic moment of atoms containing unpaired electrons was experimentally demonstrated for the first time about twenty years ago. The basic theory describing such an in teraction had already been developed and the first nuclear reactors with large available thermal neutron fluxes had recently been con structed. The power of the magnetic neutron interaction for in vestigating the structure of magnetic materials was immediately recognized and put to use where possible. Neutron diffraction, however, was practicable only in countries with nuclear reactors. The earliest neutron determinations of magnetic ordering were hence primarily carried out at Oak Ridge and Brookhaven in the US, at Chalk River in Canada and at Harwell in England. Diffraction patterns from polycrystalline ferromagnets and antiferromagnets are interpretable if produced by simple spin arrays. More complex magnetic scattering patterns could often be unravelled, in terms of a three-dimensional array of atomic moments, if the specimen studied is a single crystal. The devel opment of sophisticated cryogenic equipment, with independently alignable magnetic fields, opened the way to greater complexity in the magnetic structures that could be successfully determined, as did also the introduction of polarized neutron beams. By the end of the 'sixties, many countries were contributing significantly to neutron diffraction studies of a wide variety of magnetic materials.
| Author | : Ian S. Anderson |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 346 |
| Release | : 2009-04-21 |
| Genre | : Technology & Engineering |
| ISBN | : 0387786937 |
Neutron Imaging and Applications offers an introduction to the basics of neutron beam production in addition to the wide scope of techniques that enhance imaging application capabilities. An instructional overview of neutron sources, detectors, optics and spin-filters allows readers to delve more deeply into the discussions of radiography, tomography and prospective applications available in neutron holography techniques. A section devoted to current applications describes imaging single grains in polycrystalline materials, neutron imaging of geological materials and other materials science and engineering areas. Coverage of thermal neutron imaging of biological tissues, plant physiology, Homeland Security and contraband detection explore the future prospects of this cutting-edge research. Written by key experts in the field, researchers and engineers involved with imaging technologies will find Neutron Imaging and Applications a valuable reference.
| Author | : Denys Makarov |
| Publisher | : Springer Nature |
| Total Pages | : 420 |
| Release | : 2022-11-02 |
| Genre | : Science |
| ISBN | : 3031090861 |
This is the first book providing overview of magnetism in curved geometries, highlighting numerous peculiarities emerging from geometrically curved magnetic objects such as curved wires, shells, as well as complex three-dimensional structures. Extending planar two-dimensional structures into the three-dimensional space has become a general trend in multiple disciplines across electronics, photonics, plasmonics and magnetics. This approach provides the means to modify conventional and even launch novel functionalities by tailoring the local curvature of an object. The book covers the theory of curvilinear micromagnetism as well as experimental studies of geometrically curved magnets including both fabrication and characterization. With its coverage of fundamental aspects, together with exploration of numerous applications across magnonics, bio-engineering, soft robotics and shapeable magnetoelectronics, this edited collection is ideal for all scientists in academia and industry seeking an overview and wishing to keep abreast of advances in the novel field of curvilinear micromagnetism. It provides easy but comprehensive access to the field for newcomers, and can be used for graduate-level courses on this subject.
| Author | : Amitesh Paul |
| Publisher | : Springer |
| Total Pages | : 149 |
| Release | : 2017-08-12 |
| Genre | : Science |
| ISBN | : 3319632248 |
This research monograph presents the latest results related to the characterization of low dimensional systems. Low-angle polarized neutron scattering and X-ray scattering at grazing incidence are used as the two main techniques to explore various physical phenomena of these systems. Special focus is put on systems like thin film transition metal and rare-earth layers, oxide heterostructures, hybrid systems, self-assembled nanostructures and self-diffusion. Readers will gain in-depth knowledge about the usage of specular scattering and off-specular scattering techniques. Investigation of in-plane and out-of-plane structures and magnetism with vector magnetometric information is illustrated comprehensively. The book caters to a wide audience working in the field of nano-dimensional magnetic systems and the neutron and X-ray reflectometry community in particular.
| Author | : W. Gavin Williams |
| Publisher | : |
| Total Pages | : 368 |
| Release | : 1988 |
| Genre | : Science |
| ISBN | : |
This book provides the experimental condensed-matter researcher with a description of the variety of material characteristics which can now be investigated with polarized neutrons. Included are two extensive chapters on basic theory and currently available instrumentation, and a presentation and discussion of scientific results obtained from a wide range of experiments: diffraction, critical reflection, elastic and inelastic polarization analysis, and neutron spin precession methods like spin-echo spectroscopy.
| Author | : Gianluca Gubbiotti |
| Publisher | : CRC Press |
| Total Pages | : 264 |
| Release | : 2019-07-10 |
| Genre | : Science |
| ISBN | : 1000024547 |
Magnonics, a research field that uses spin waves, collective excitations of ordered magnetic materials, or magnons (their quanta) as a tool for signal processing, communication, and computation, has rapidly grown during the past decade because of the low-energy consumption and potential compatibility with next-generation circuits beyond CMOS electronics. The interest in 3D magnonic nanostructures follows the latest trend in conventional electronics based on expansion from 2D planar to 3D vertically integrated structures. To remain on the same technological level, a similar expansion should be realized in magnonics. Following this trend, this book provides an overview of recent developments in the exploitation of the third dimension in magnonics, with special focus on the propagation of spin waves in layered magnonic crystals, spin textures, curved surfaces, 3D nano-objects, and cavity magnonics.
| Author | : L. D. Roberts |
| Publisher | : |
| Total Pages | : 30 |
| Release | : 1954 |
| Genre | : Neutrons |
| ISBN | : |
| Author | : I︠U︡riĭ Aleksandrovich Izi︠u︡mov |
| Publisher | : Springer |
| Total Pages | : 624 |
| Release | : 1970 |
| Genre | : Gardening |
| ISBN | : |
The inter action between the magnetic field generated by the neutron and the magnetic moment of atoms containing unpaired electrons was experimentally demonstrated for the first time about twenty years ago. The basic theory describing such an in teraction had already been developed and the first nuclear reactors with large available thermal neutron fluxes had recently been con structed. The power of the magnetic neutron interaction for in vestigating the structure of magnetic materials was immediately recognized and put to use where possible. Neutron diffraction, however, was practicable only in countries with nuclear reactors. The earliest neutron determinations of magnetic ordering were hence primarily carried out at Oak Ridge and Brookhaven in the US, at Chalk River in Canada and at Harwell in England. Diffraction patterns from polycrystalline ferromagnets and antiferromagnets are interpretable if produced by simple spin arrays. More complex magnetic scattering patterns could often be unravelled, in terms of a three-dimensional array of atomic moments, if the specimen studied is a single crystal. The devel opment of sophisticated cryogenic equipment, with independently alignable magnetic fields, opened the way to greater complexity in the magnetic structures that could be successfully determined, as did also the introduction of polarized neutron beams. By the end of the 'sixties, many countries were contributing significantly to neutron diffraction studies of a wide variety of magnetic materials.
