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Exchange Coupling And Giant Magnetoresistance In Nickel Iron Copper Multilayers
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Book Synopsis Exchange Coupling and Giant Magnetoresistance in Nickel-iron/copper Multilayers by : Kevin Pettit
Download or read book Exchange Coupling and Giant Magnetoresistance in Nickel-iron/copper Multilayers written by Kevin Pettit and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years interlayer exchange coupling and giant magnetoresistance (GMR) in transition metal ferromagnet/nonmagnetic multilayers have been extensively studied. Bilinear interlayer exchange favors the collinear alignment of the magnetization of adjacent ferromagnetic layers, oscillates with the thickness of the non-magnetic spacer layer, and has been observed in a large number of magnetic multilayer and trilayer systems. Biquadratic exchange favors the perpendicular alignment of the magnetization of adjacent ferromagnetic layers and has been observed in several magnetic multilayer and trilayer systems. Unlike bilinear exchange, the origins of biquadratic exchange are uncertain. Generally, biquadratic exchange is significantly weaker than bilinear exchange. The connection between the magnetic configuration, which is determined by the interlayer coupling, and the magnetoresistance is well established. The GMR effect occurs when the antiferromagnetically aligned moments of alternating magnetic layers are brought into alignment by an external magnetic field. This causes a dramatic drop in the electrical resistance. Much of the interest in magnetic multilayers stems from the many possible applications of the GMR effect. This work is a study of biquadratic coupling and its effects on the magnetic phase diagram and giant magnetoresistance of sputter grown single crystal NiFe/Cu multilayers. It is often difficult to determine the bilinear and biquadratic coupling strengths separately, particularly in samples with pinhole defects in the spacer layers, because the zero field configuration of the moments is not easily determined. However, I will show that under certain conditions biquadratic coupling can lead to configurations in which the net magnetization of the coupled magnetic moments is not aligned parallel to the applied magnetic field. In samples with magnetocrystalline anisotropy, these asymmetric configurations lead to a novel minimum in the GMR at low fields when the field is applied along the hard axis of magnetization. In such cases, the bilinear and biquadratic coupling strengths can be determined from resistance measurements only. In this work the magnetic phase diagram is calculated for a two layer system with bilinear coupling, biquadratic coupling and magnetocrystalline anisotropy. New asymmetric configurations, some of which cannot be determined analytically, are found. Numerical simulations confirm the contribution of these configurations to the GMR and the accuracy of the interlayer coupling strengths extracted from the magnetoresistance data. These measurements indicate that the biquadratic coupling can be considerably stronger than predicted theoretically. The data are found to be inconsistent with the intrinsic, loose spin, dipole field, and fluctuation models of biquadratic coupling. To explain the data I propose a new model in which ferromagnetic coupling through pinholes in the spacer layer, combined with the antiferromagnetic bilinear coupling, frustrates the magnetic layers and leads to orthogonal coupling. Unlike the fluctuation model, the pinhole-frustration model allows for very strong biquadratic coupling. Although the pinhole mechanism can lead to biquadratic coupling, closer analysis reveals that the bilinear-biquadratic formalism may break down for strong frustration.
Book Synopsis Exchange Coupling and Giant Magnetoresistance in NiFe/Cu Multilayers by : Kevin Pettit
Download or read book Exchange Coupling and Giant Magnetoresistance in NiFe/Cu Multilayers written by Kevin Pettit and published by . This book was released on 1996 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thin Film Magnetoresistive Sensors by : S Tumanski
Download or read book Thin Film Magnetoresistive Sensors written by S Tumanski and published by CRC Press. This book was released on 2001-06-08 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thin Film Magnetoresistive Sensors presents a comprehensive review of thin film magnetoresistive (MR) sensors, including the theory of MR effects as well as the design, fabrication, properties, and applications of MR sensors. With over 1,000 references, the book fully reviews the theory, development, and use of these sensors. It provides essential information about the performance of various kinds of sensors, including permalloy magnetoresistors, spin valve sensors, multilayer sensors, colossal effect sensors, spin dependent tunneling sensors, and magnetoimpedance sensors.
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Giant Magnetoresistance of Electrochemically Produced Copper-nickel Multilayers by : Yan Zhang
Download or read book Giant Magnetoresistance of Electrochemically Produced Copper-nickel Multilayers written by Yan Zhang and published by . This book was released on 1994 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Magnetic Properties and Structure Characterization of Nickel Iron-based Spin Valve Multilayer Structures by : Chien-Li Lin
Download or read book Magnetic Properties and Structure Characterization of Nickel Iron-based Spin Valve Multilayer Structures written by Chien-Li Lin and published by . This book was released on 1999 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Author :Keith D. (Keith Dane) Bird Publisher :National Library of Canada = Bibliothèque nationale du Canada ISBN 13 :9780612013872 Total Pages :218 pages Book Rating :4.0/5 (138 download)
Book Synopsis Giant Magnetoresistance in Electrodeposited Nickel-copper and Cobalt-copper Multilayers [microform] by : Keith D. (Keith Dane) Bird
Download or read book Giant Magnetoresistance in Electrodeposited Nickel-copper and Cobalt-copper Multilayers [microform] written by Keith D. (Keith Dane) Bird and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1994 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Metal Based Thin Films for Electronics by : Klaus Wetzig
Download or read book Metal Based Thin Films for Electronics written by Klaus Wetzig and published by John Wiley & Sons. This book was released on 2006-03-06 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: This up-to-date handbook covers the main topics of preparation, characterization and properties of complex metal-based layer systems. The authors -- an outstanding group of researchers -- discuss advanced methods for structure, chemical and electronic state characterization with reference to the properties of thin functional layers, such as metallization and barrier layers for microelectronics, magnetoresistive layers for GMR and TMR, sensor and resistance layers. As such, the book addresses materials specialists in industry, especially in microelectronics, as well as scientists, and can also be recommended for advanced studies in materials science, analytics, surface and solid state science.
Download or read book Metals Abstracts written by and published by . This book was released on 1996 with total page 1628 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metals Abstracts Index written by and published by . This book was released on 1996 with total page 1622 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Spin Transport and Magnetism by : Evgeny Y. Tsymbal
Download or read book Handbook of Spin Transport and Magnetism written by Evgeny Y. Tsymbal and published by CRC Press. This book was released on 2016-04-19 with total page 797 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past several decades, the research on spin transport and magnetism has led to remarkable scientific and technological breakthroughs, including Albert Fert and Peter Grunberg's Nobel Prize-winning discovery of giant magnetoresistance (GMR) in magnetic metallic multilayers. Handbook of Spin Transport and Magnetism provides a comprehensive, bal
Book Synopsis Exchange Coupling and Noncollinear Magnetic States in Ni/Fen/Ni(1 0 0) Multilayers by :
Download or read book Exchange Coupling and Noncollinear Magnetic States in Ni/Fen/Ni(1 0 0) Multilayers written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Concise Encyclopedia of Magnetic and Superconducting Materials by : K.H.J. Buschow
Download or read book Concise Encyclopedia of Magnetic and Superconducting Materials written by K.H.J. Buschow and published by Elsevier. This book was released on 2005-12-28 with total page 1361 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic and superconducting materials pervade every avenue of the technological world – from microelectronics and mass-data storage to medicine and heavy engineering. Both areas have experienced a recent revitalisation of interest due to the discovery of new materials, and the re-evaluation of a wide range of basic mechanisms and phenomena. This Concise Encyclopedia draws its material from the award-winning Encyclopedia of Materials and Engineering, and includes updates and revisions not available in the original set -- making it the ideal reference companion for materials scientists and engineers with an interest in magnetic and superconducting materials. Contains in excess of 130 articles, taken from the award-winning Encyclopedia of Materials: Science and Technology, including ScienceDirect updates not available in the original set Each article discusses one aspect of magnetic and superconducting materials and includes photographs, line drawings and tables to aid the understanding of the topic at hand Cross-referencing guides readers to articles covering subjects of related interest
Book Synopsis Small Scale Structures by : N.F. de Rooij
Download or read book Small Scale Structures written by N.F. de Rooij and published by Elsevier. This book was released on 2012-12-02 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the proceedings of 3 symposia dealing with various aspects of small scale structures. Symposium A deals with the development of new materials, including ceramics, polymers, metals, etc., their microstructuring as well as their potential for application in microsystems. All kinds of microsystems are considered, e.g. mechanical, magnetic, optical, chemical, biochemical and issues related to assembly and packaging were also covered. Symposium B deals with four topics: synthesis and preparation of nanostructured ceramics and composites with well-controlled geometric order and chemical composition; coupling of these structures to transducers for current and future chemical and biochemical devices based upon microoptics, microelectronics, microionics, microelectrodes or molecular cages; planar thin film structures and the control of covalent thin film/transducer couplings, the control of selective, stable and sensitive recognition centers at the surface, at grain boundaries or in the bulk of selected nanostructured materials with extremely narrow particle size distributions; analysis of these structures and sensor functions by means of techniques utilizing photons, electrons, ions, or atomic particle beam probes. Symposium E examines the structure-property relationships in thin films and multilayers, from the point of view of both fundamental studies and practical applications.
Book Synopsis Proceedings of the Symposium on Fundamental Aspects of Electrochemical Deposition and Dissolution Including Modeling by : Milan Paunovic
Download or read book Proceedings of the Symposium on Fundamental Aspects of Electrochemical Deposition and Dissolution Including Modeling written by Milan Paunovic and published by The Electrochemical Society. This book was released on 1998 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Investigation Into the Effect of Annealing on the Giant Magnetoresistance of Electrodeposited Co-Ni-Cu/Cu Multilayers by : Marc V. Bennett
Download or read book An Investigation Into the Effect of Annealing on the Giant Magnetoresistance of Electrodeposited Co-Ni-Cu/Cu Multilayers written by Marc V. Bennett and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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