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Magnetization Dynamics In Magnetically Coupled Heterostructures
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Book Synopsis Magnetization Dynamics in Magnetically Coupled Heterostructures by : Alexander Kaiser
Download or read book Magnetization Dynamics in Magnetically Coupled Heterostructures written by Alexander Kaiser and published by Forschungszentrum Jülich. This book was released on 2009 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Magnetization Dynamics in Coupled Magnetic Systems by : Stefan Horst Klingler
Download or read book Magnetization Dynamics in Coupled Magnetic Systems written by Stefan Horst Klingler and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Magnetic Order and Coupling Phenomena by : Christian Schubert
Download or read book Magnetic Order and Coupling Phenomena written by Christian Schubert and published by Springer. This book was released on 2014-06-03 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents recent developments in magnetic coupling phenomena of ferrimagnetic rare-earth transition-metal Tb-Fe alloys and coupled systems consisting of ferri-/ferromagnetic heterostructures. Taking advantage of the tunability of the exchange coupling between ferrimagnetic and ferromagnetic layers by means of stoichiometry of the Tb-Fe layer, the variable number of repetitions in the Co/Pt multilayer as well as the thickness of an interlayer spacer, it is demonstrated that large perpendicular unidirectional anisotropy can be induced at room temperature. This robust perpendicular exchange bias at room temperature opens up a path towards applications in spintronics.
Book Synopsis Spin Dynamics and Damping in Ferromagnetic Thin Films and Nanostructures by : Anjan Barman
Download or read book Spin Dynamics and Damping in Ferromagnetic Thin Films and Nanostructures written by Anjan Barman and published by Springer. This book was released on 2017-12-27 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive overview of the latest developments in the field of spin dynamics and magnetic damping. It discusses the various ways to tune damping, specifically, dynamic and static control in a ferromagnetic layer/heavy metal layer. In addition, it addresses all optical detection techniques for the investigation of modulation of damping, for example, the time-resolved magneto-optical Kerr effect technique.
Book Synopsis Magnetic Dynamics in Magnetic Multilayers and Spintronic Devices by : Hang Chen
Download or read book Magnetic Dynamics in Magnetic Multilayers and Spintronic Devices written by Hang Chen and published by . This book was released on 2021 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: A critical issue in spintronic devices is how to efficiently switch the magnetization of a nanomagnet. The switching is typically occurred at ferromagnetic resonant frequency. One of the very desired features is to enhance the resonant frequency so as to increase the switching speed. In this thesis. we use optical mode in coupled FM bilayers to significantly enhance the resonance frequency because the ferromagnetic exchange coupling is much stronger compared with other effective field introduced by, for example, strain or anisotropy. we theoretically and experimentally study the resonant frequency in Co90Fe10/Ta/(Ni80Fe20)18́2xCux trilayer. we also validate the theoretical model with experimental results and use the theoretical model to further design heterostructures with desired properties such as enhanced intensity in OM. All of our experimental results are fully explained by our model which also allows us to identify the coupling mechanism as Neel "orange-peel" coupling and extract the interlayer coupling strength. In current magnetic random access memories (MRAMs), the magnetization is switched via spin transfer torques (STT) or spin orbit torques (SOTs). In this thesis, we use a time-resolved (TR) Magneto-optic Kerr effect (TRMOKE) to investigate the SOT-induced magnetization dynamics in Py/Pt and Ta/CoFeB heterostructures. We have answered three questions as we set to explore: (1) the field-like torque determines initial oscillation magnitude and the damping-like torque determines the final steady position; (2) both the effect field of damping-like toque hDL and field-like torque hFL can be extracted from the TRMOKE spectrum, and (3) the ratio hDL/ hFL measured from dynamics are the same as those measured at low frequency. Finally, we also explore the way of using voltage to switch the magnetization in order to significantly reduce the energy consumption. We employed an antiferromagnetic Cr2O3 film with net a net magnetization at the film surface. The surface magnetization can be isothermally switched via applied electric field (voltage), enabling "writing" function in the memory cell. We solved various challenges in developing the final device including (1) exchange coupling between the surface magnetization and the magnetization in a ferromagnetic heterostructure of Co/Pd multilayer, (2) the exchange coupling between Co/Pd and CoFeB which has perpendicular magnetization and serves as a bottom electrode of magnetic tunnel junction for readout. (3) the leakage issue of Cr2O3, (4) the contact to middle layer that is less than 5 nm thick, and (5) device layout and detailed fabrication steps. Although we did not have time to fully demonstrate the devices, all key steps have been well resolved.
Book Synopsis Thermal Diffusion in Binary Surfactant Systems and Microemulsions by : Bastian Arlt
Download or read book Thermal Diffusion in Binary Surfactant Systems and Microemulsions written by Bastian Arlt and published by Forschungszentrum Jülich. This book was released on 2012 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Resistive Switching in Pt, TiO2, Pt by : Doo Seok Jeong
Download or read book Resistive Switching in Pt, TiO2, Pt written by Doo Seok Jeong and published by Forschungszentrum Jülich. This book was released on 2009 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Optical and Electrical Addressing in Moleculebased Logic Circuits by : Marcel Manheller
Download or read book Optical and Electrical Addressing in Moleculebased Logic Circuits written by Marcel Manheller and published by Forschungszentrum Jülich. This book was released on 2012 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zsfassung in dt. u. engl. Sprache
Book Synopsis Resistive Switching in TiO2 Thin Films by : Lin Yang
Download or read book Resistive Switching in TiO2 Thin Films written by Lin Yang and published by Forschungszentrum Jülich. This book was released on 2011 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ultrathin Gold Nanowires by : Alexandre Kisner
Download or read book Ultrathin Gold Nanowires written by Alexandre Kisner and published by Forschungszentrum Jülich. This book was released on 2013 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Integration of Resistive Switching Devices in Crossbar Structures by : Christian Nauenheim
Download or read book Integration of Resistive Switching Devices in Crossbar Structures written by Christian Nauenheim and published by Forschungszentrum Jülich. This book was released on 2010 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis DC and RF Characterization of NiSi Schottky Barrier MOSFETs with Dopant Segregation by : Christoph Johannes Urban
Download or read book DC and RF Characterization of NiSi Schottky Barrier MOSFETs with Dopant Segregation written by Christoph Johannes Urban and published by Forschungszentrum Jülich. This book was released on 2010 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Magnetic Materials written by Khan Maaz and published by BoD – Books on Demand. This book was released on 2016-08-24 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports on the recent progresses in theory, application, and characterization of magnetic materials. It covers a broad spectrum of topics on magnetic materials with different shapes and morphologies such as transition metals, cylindrical and 2D ferromagnetic nanowires, core-shell nanowires, monoatomic-layered nanostructures, and nanocrystals. This book addresses diverse groups of readers with general background in physics and material science and also covers topics for the specialists in the field of magnetism. It is believed that this book will be interesting for the readers and will provide a solid foundation about the topic for the students, scientists, and engineers working in the field of material science and condensed matter physics.
Book Synopsis Spin Dynamics in Confined Magnetic Structures II by : Burkard Hillebrands
Download or read book Spin Dynamics in Confined Magnetic Structures II written by Burkard Hillebrands and published by Springer Science & Business Media. This book was released on 2003-03-12 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second volume of the book on spin dynamics in confined magnetic structures covers central aspects of spin dynamic phenomena, so that researchers can find a comprehensive compilation of the current work in the field. Introductory chapters help newcomers to understand the basic concepts, and the more advanced chapters give the current state of the art for most spin dynamic issues in the milliseconds to femtoseconds range. Both experimental techniques and theoretical work are discussed. The comprehensive presentation of these developments makes this volume very timely and valuable for every researcher working in the field of magnetism. It describes the new experimental techniques which have advanced this field very rapidly. Among the techniques covered, particular attention is given to those involving high temporal, elemental and spatial resolution as well as to techniques involving magnetic field pulses with very short rise times and durations.
Book Synopsis Spintronics Handbook, Second Edition: Spin Transport and Magnetism by : Evgeny Y. Tsymbal
Download or read book Spintronics Handbook, Second Edition: Spin Transport and Magnetism written by Evgeny Y. Tsymbal and published by CRC Press. This book was released on 2019-05-09 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spintronics Handbook, Second Edition offers an update on the single most comprehensive survey of the two intertwined fields of spintronics and magnetism, covering the diverse array of materials and structures, including silicon, organic semiconductors, carbon nanotubes, graphene, and engineered nanostructures. It focuses on seminal pioneering work, together with the latest in cutting-edge advances, notably extended discussion of two-dimensional materials beyond graphene, topological insulators, skyrmions, and molecular spintronics. The main sections cover physical phenomena, spin-dependent tunneling, control of spin and magnetism in semiconductors, and spin-based applications.
Book Synopsis Emergent Transport Properties of Magnetic Topological Insulator Heterostructures by : Kenji Yasuda
Download or read book Emergent Transport Properties of Magnetic Topological Insulator Heterostructures written by Kenji Yasuda and published by Springer Nature. This book was released on 2020-09-07 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reveals unique transport phenomena and functionalities in topological insulators coupled with magnetism and superconductivity. Topological insulators are a recently discovered class of materials that possess a spin-momentum-locked surface state. Their exotic spin texture makes them an exciting platform for investigating emergent phenomena, especially when coupled with magnetism or superconductivity. Focusing on the strong correlation between electricity and magnetism in magnetic topological insulators, the author presents original findings on current-direction-dependent nonreciprocal resistance, current-induced magnetization reversal and chiral edge conduction at the domain wall. In addition, he demonstrates how the coupling between superconductivity and topological surface state leads to substantial nonreciprocal resistance. The author also elucidates the origins of these phenomena and deepens readers’ understanding of the topologically nontrivial electronic state. The book includes several works which are published in top journals and were selected for the President’s Award by the University of Tokyo and for the Ikushi Prize, awarded to distinguished Ph.D. students in Japan.
Book Synopsis International Tables for Crystallography, Volume I by : Christopher Chantler
Download or read book International Tables for Crystallography, Volume I written by Christopher Chantler and published by John Wiley & Sons. This book was released on 2024-08-19 with total page 1090 pages. Available in PDF, EPUB and Kindle. Book excerpt: X-ray absorption spectroscopy and X-ray emission spectroscopy are complementary to crystallographic methods, particularly for materials science and the study of nanostructure and systems with partial disorder and partial local order, including solutions, gases, liquids, glasses and powders. This new volume of International Tables for Crystallography has nine parts and over 150 chapters contributed by a wide range of international experts. Part 1 provides a brief overview and introduction to the background of X-ray absorption spectroscopy (XAS) and experimental facilities. Part 2 discusses the quantum theory of XAS and related approaches. Part 3 describes both standard and advanced experimental methods used in XAS, X-ray emission spectroscopy (XES) and related techniques. Part 4 covers both standard and more advanced pre-processing of data. Part 5 gives an extensive overview of the analysis of experimental data. Part 6 provides details of the major software packages for data collection, reduction and analysis. Part 7 outlines the importance in science, reporting and hypothesis testing of the exchange of input and processed output data, and data deposition. It also presents excerpts of tables of data and supplementary material for XAS, pre-edge studies, X-ray absorption near-edge spectroscopy (XANES) and X-ray absorption fine structure (XAFS) studies. These tables are also available in full as online supporting information. Part 8 explores a wide range of applications of XAS in fields including materials science, physics, chemistry, biology, earth sciences, catalysis and cultural heritage. Part 9 presents definitions of the terms and quantities used, as developed by the International Union of Crystallography's Commission on XAFS. The volume has been written for the worldwide XAS community of thousands of practitioners, beamline scientists, experts and academics, and for the novice user who wishes to know what XAS and XES can do for them and how they may use these techniques for their particular purposes. The volume is therefore intended to be a self-contained, authoritative reference work that can also be used for training, learning or teaching, providing practical guidance for readers of all levels of experience. More information on the volumes in the series International Tables for Crystallography can be found at https://it.iucr.org.
