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Hard X Ray Photoelectron Spectroscopy Of Deeply Buried Magnetic Layers
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Book Synopsis Hard X-Ray Photoelectron Spectroscopy of Deeply Buried Magnetic Layers by : Xeniya Kozina
Download or read book Hard X-Ray Photoelectron Spectroscopy of Deeply Buried Magnetic Layers written by Xeniya Kozina and published by LAP Lambert Academic Publishing. This book was released on 2013-01 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work focuses on the investigation of multilayer structures, employed in spintronics devices, by a number of techniques based on hard x-ray photoelectron spectroscopy (HAXPES). The application of hard x-rays increases the inelastic mean free path of the emitted electrons what makes HAXPES a non-destructive bulk sensitive probe for solid state research, especially studies of buried layers. Magnetoelectronic properties such as exchange splitting in ferromagnetic materials as well as the macroscopic magnetic ordering can be studied by magnetic circular dichroism in photoemission (MCDAD). In the present work MCDAD was integrated into HAXPES to explore the magnetic phenomena in deeply buried layers of the complex multilayer structures. In turn, direct measurements of electron spins of ferromagnets always attracted much attention but up to date have been limited by the surface sensitivity of the developed techniques. The last part of the work presents the results of the successfully performed spin-resolved HAXPES experiment using a spin polarimeter of the SPLEED-type on a buried magnetic layer.
Download or read book Spintronics written by Claudia Felser and published by Springer Science & Business Media. This book was released on 2013-03-20 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spintronics is an emerging technology exploiting the spin degree of freedom and has proved to be very promising for new types of fast electronic devices. Amongst the anticipated advantages of spintronics technologies, researchers have identified the non-volatile storage of data with high density and low energy consumption as particularly relevant. This monograph examines the concept of half-metallic compounds perspectives to obtain novel solutions and discusses several oxides such as perovskites, double perovskites and CrO2 as well as Heusler compounds. Such materials can be designed and made with high spin polarization and, especially in the case of Heusler compounds, many material-related problems present in current-day 3d metal systems, can be overcome. Spintronics: From Materials to Devices provides an insight into the current research on Heusler compounds and offers a general understanding of structure–property relationships, including the influence of disorder and correlations on the electronic structure and interfaces. Spintronics devices such as magnetic tunnel junctions (MTJs) and giant magnetoresistance (GMR) devices, with current perpendicular to the plane, in which Co2 based Heusler compounds are used as new electrode materials, are also introduced. From materials design by theoretical methods and the preparation and properties of the materials to the production of thin films and devices, this monograph represents a valuable guide to both novices and experts in the fields of Chemistry, Physics, and Materials Science.
Book Synopsis Hard X-ray Photoelectron Spectroscopy (HAXPES) by : Joseph Woicik
Download or read book Hard X-ray Photoelectron Spectroscopy (HAXPES) written by Joseph Woicik and published by Springer. This book was released on 2015-12-26 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the first complete and up-to-date summary of the state of the art in HAXPES and motivates readers to harness its powerful capabilities in their own research. The chapters are written by experts. They include historical work, modern instrumentation, theory and applications. This book spans from physics to chemistry and materials science and engineering. In consideration of the rapid development of the technique, several chapters include highlights illustrating future opportunities as well.
Book Synopsis Using Standing-wave X-ray Photoemission Spectroscopy to Determine Interfacial Composition In-situ in a Multi-layer Magnetic Tunnel Junction by : Catherine Shaw Conlon
Download or read book Using Standing-wave X-ray Photoemission Spectroscopy to Determine Interfacial Composition In-situ in a Multi-layer Magnetic Tunnel Junction written by Catherine Shaw Conlon and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Fe/MgO magnetic tunnel junction (MTJ) is a classic spintronic system, with current importance technologically, and interest for future innovation. The key magnetic properties are linked directly to the structure of hard-to-access buried interfaces, and the Fe and MgO components near the surface are unstable when exposed to air, making a deeper probing, non-destructive, in-situ measurement ideal for this system. The physical structures that are known from literature to contribute to the tunneling magneto-resistance (TMR) or the interlayer magnetic exchange coupling of this system include: stoichiometry of Fe, Mg, and O at the interface; interface roughness; MgO and Fe layer thicknesses; Fe oxidation at the interface; and symmetry of Fe on MgO and MgO on Fe interfaces. An in-depth understanding of the interface of this system is critical to developing an understanding of the magnetic properties. Fe/MgO/Fe MTJs grown with even small variations in the growth environment or by different procedures result in significant differences in these interface structures. Along with a deep probing and non-destructive technique for characterizing the buried interfaces, a measurement with the future possibility of simultaneous determinations of the buried chemical, physical, and electronic structure, valence band dispersion, and magnetism with depth specificity is of interest. We have applied hard x-ray photoemission spectroscopy (HXPS) and standing-wave (SW) HXPS in the few keV energy range to probe the structure of an epitaxially-grown MgO/Fe superlattice. HXPS is non-destructive, deep probing, and can determine these properties of interest. The SW technique allows for specific sample interfaces to be measured and compared to the bulk layer, and for structure determination with few-angstrom precision. We compare soft x-ray photoemission spectroscopy (SXPS) SW measurements to clearly demonstrate the advantages of the hard/tender x-ray excitation energy for this sample, and other similar superlattice samples. The superlattice sample consists of 9 repeats of MgO grown on Fe by magnetron sputtering on an MgO (001) substrate, with a protective Al2O3 capping layer. We determine through SW-HXPS that 8 of the 9 repeats are similar and ordered, with a period of 33 ± 4 Å, with minor presence of FeO at the interfaces and a significantly distorted top bilayer with c.a. 3 times the oxidation of the lower layers at the top MgO/Fe interface. There is evidence of asymmetrical oxidation on the top and bottom of the Fe layers. We find agreement with dark-field scanning transmission electron microscope (STEM) and x-ray reflectivity measurements. Through the STEM measurements we confirm an overall epitaxial stack with dislocations and warping at the interfaces of c.a. 5 Å. We also note a distinct difference in the top bilayer, especially MgO, with possible Fe inclusions. We discuss the impacts of this distorted top bilayer on some measurements of interest, including x-ray photoelectron diffraction and angle-resolved photoemission spectroscopy. We demonstrate that SW-HXPS can be used to probe deep buried interfaces of novel magnetic devices with few-angstrom precision. This supports crucial understanding of the interface structure of this system, which has direct implications for the interlayer magnetic exchange coupling. SW-HXPS shows promise for future directions with combined structural and magnetic measurements on a complex, nanolayered system with sensitive material components.
Book Synopsis Probing Buried Interfaces with Standing-wave Excited Photoelectron Spectroscopy and X-ray Emission Spectroscopy by : Brian C. Sell
Download or read book Probing Buried Interfaces with Standing-wave Excited Photoelectron Spectroscopy and X-ray Emission Spectroscopy written by Brian C. Sell and published by . This book was released on 2007 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Compendium of Surface and Interface Analysis by : The Surface Science Society of Japan
Download or read book Compendium of Surface and Interface Analysis written by The Surface Science Society of Japan and published by Springer. This book was released on 2018-02-19 with total page 807 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book concisely illustrates the techniques of major surface analysis and their applications to a few key examples. Surfaces play crucial roles in various interfacial processes, and their electronic/geometric structures rule the physical/chemical properties. In the last several decades, various techniques for surface analysis have been developed in conjunction with advances in optics, electronics, and quantum beams. This book provides a useful resource for a wide range of scientists and engineers from students to professionals in understanding the main points of each technique, such as principles, capabilities and requirements, at a glance. It is a contemporary encyclopedia for selecting the appropriate method depending on the reader's purpose.
Book Synopsis X-ray Standing Wave Technique, The: Principles And Applications by : Jorg Zegenhagen
Download or read book X-ray Standing Wave Technique, The: Principles And Applications written by Jorg Zegenhagen and published by World Scientific. This book was released on 2013-01-30 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt: The X-ray standing wave (XSW) technique is an X-ray interferometric method combining diffraction with a multitude of spectroscopic techniques. It is extremely powerful for obtaining information about virtually all properties of surfaces and interfaces on the atomic scale. However, as with any other technique, it has strengths and limitations. The proper use and necessary understanding of this method requires knowledge in quite different fields of physics and technology. This volume presents comprehensively the theoretical background, technical requirements and distinguished experimental highlights of the technique. Containing contributions from the most prominent experts of the technique, such as Andre Authier, Boris Batterman, Michael J Bedzyk, Jene Golovchenko, Victor Kohn, Michail Kovalchuk, Gerhard Materlik and D Phil Woodruff, the book equips scientists with all the necessary information and knowledge to understand and use the XSW technique in practically all applications.
Book Synopsis Spectroscopy of Complex Oxide Interfaces by : Claudia Cancellieri
Download or read book Spectroscopy of Complex Oxide Interfaces written by Claudia Cancellieri and published by Springer. This book was released on 2018-04-09 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes the most recent and compelling experimental results for complex oxide interfaces. The results of this book were obtained with the cutting-edge photoemission technique at highest energy resolution. Due to their fascinating properties for new-generation electronic devices and the challenge of investigating buried regions, the book chiefly focuses on complex oxide interfaces. The crucial feature of exploring buried interfaces is the use of soft X-ray angle-resolved photoemission spectroscopy (ARPES) operating on the energy range of a few hundred eV to increase the photoelectron mean free path, enabling the photons to penetrate through the top layers – in contrast to conventional ultraviolet (UV)-ARPES techniques. The results presented here, achieved by different research groups around the world, are summarized in a clearly structured way and discussed in comparison with other photoemission spectroscopy techniques and other oxide materials. They are complemented and supported by the most recent theoretical calculations as well as results of complementary experimental techniques including electron transport and inelastic resonant X-ray scattering.
Book Synopsis An Introduction to Surface Analysis by XPS and AES by : John F. Watts
Download or read book An Introduction to Surface Analysis by XPS and AES written by John F. Watts and published by John Wiley & Sons. This book was released on 2019-08-27 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a concise yet comprehensive introduction to XPS and AES techniques in surface analysis This accessible second edition of the bestselling book, An Introduction to Surface Analysis by XPS and AES, 2nd Edition explores the basic principles and applications of X-ray Photoelectron Spectroscopy (XPS) and Auger Electron Spectroscopy (AES) techniques. It starts with an examination of the basic concepts of electron spectroscopy and electron spectrometer design, followed by a qualitative and quantitative interpretation of the electron spectrum. Chapters examine recent innovations in instrument design and key applications in metallurgy, biomaterials, and electronics. Practical and concise, it includes compositional depth profiling; multi-technique analysis; and everything about samples—including their handling, preparation, stability, and more. Topics discussed in more depth include peak fitting, energy loss background analysis, multi-technique analysis, and multi-technique profiling. The book finishes with chapters on applications of electron spectroscopy in materials science and the comparison of XPS and AES with other analytical techniques. Extensively revised and updated with new material on NAPXPS, twin anode monochromators, gas cluster ion sources, valence band spectra, hydrogen detection, and quantification Explores key spectroscopic techniques in surface analysis Provides descriptions of latest instruments and techniques Includes a detailed glossary of key surface analysis terms Features an extensive bibliography of key references and additional reading Uses a non-theoretical style to appeal to industrial surface analysis sectors An Introduction to Surface Analysis by XPS and AES, 2nd Edition is an excellent introductory text for undergraduates, first-year postgraduates, and industrial users of XPS and AES.
Download or read book Science Abstracts written by and published by . This book was released on 1995 with total page 1360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synchrotron Radiation Research by : Herman Winick
Download or read book Synchrotron Radiation Research written by Herman Winick and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 767 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has grown out of our shared experience in the development of the Stanford Synchrotron Radiation Laboratory (SSRL), based on the electron-positron storage ring SPEAR at the Stanford Linear Accelerator Center (SLAC) starting in Summer, 1973. The immense potential of the photon beam from SPEAR became obvious as soon as experiments using the beam started to run in May, 1974. The rapid growth of interest in using the beam since that time and the growth of other facilities using high-energy storage rings (see Chapters 1 and 3) demonstrates how the users of this source of radiation are finding applications in an increasingly wide variety of fields of science and technology. In assembling the list of authors for this book, we have tried to cover as many of the applications of synchrotron radiation, both realized already or in the process of realization, as we can. Inevitably, there are omissions both through lack of space and because many projects are at an early stage. We thank the authors for their efforts and cooperation in producing what we believe is the most comprehensive treatment of synchrotron radiation research to date.
Book Synopsis Functional Oxides by : Duncan W. Bruce
Download or read book Functional Oxides written by Duncan W. Bruce and published by John Wiley & Sons. This book was released on 2011-03-29 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: Functional oxides have a wide variety of applications in the electronic industry. The discovery of new metal oxides with interesting and useful properties continues to drive much research in chemistry, physics, and materials science. In Functional Oxides five topical areas have been selected to illustrate the importance of metal oxides in modern materials chemistry: Noncentrosymmetric Inorganic Oxide Materials Geometrically Frustrated Magnetic Materials Lithium Ion Conduction in Oxides Thermoelectric Oxides Transition Metal Oxides - Magnetoresistance and Half-Metallicity The contents highlight structural chemistry, magnetic and electronic properties, ionic conduction and other emerging areas of importance, such as thermoelectricity and spintronics. Functional Oxides covers these complex concepts in a clear and accessible manner providing an excellent introduction to this broad subject area.
Book Synopsis Electron Spectroscopy by : C. R. Brundle
Download or read book Electron Spectroscopy written by C. R. Brundle and published by Mittal Publications. This book was released on 2002 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analytical Geomicrobiology by : Janice P. L. Kenney
Download or read book Analytical Geomicrobiology written by Janice P. L. Kenney and published by Cambridge University Press. This book was released on 2019-07-18 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive handbook outlining state-of-the-art analytical techniques used in geomicrobiology, for advanced students, researchers and professional scientists.
Book Synopsis Undulators, Wigglers and Their Applications by : Hideo Onuki
Download or read book Undulators, Wigglers and Their Applications written by Hideo Onuki and published by CRC Press. This book was released on 2002-10-17 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: A "wiggler" is an insertion device used for spatially concentrating radiation for research purposes, and an "undulator" is a multi-period wiggler. Undulator and wiggler devices are inserted in a free straight section of the storage ring of the synchrotron. This book explores the radiation produced by these insertion devices, the engineering and ass
Book Synopsis Journal of the Physical Society of Japan by :
Download or read book Journal of the Physical Society of Japan written by and published by . This book was released on 2018 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:
