Download or read book Magnetic Interface Effects in Thin Film Heterostructures written by Paul Jan Zakalek and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Interface Effects on Magnetism in Model Thin Films written by and published by . This book was released on 2007 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goals of the research were to explore the fundamental physical mechanisms that allow interfaces between magnetic and nonmagnetic/magnetic and magnetic/vacuum) thin films to influence and control thin-film magnetic properties. We explored the relationship of magnetic properties to nano-scale chemical and physical interface morphologies. Our approach focused on obtaining a quantitative and microscopic description of these interface morphologies, and relating them quantitatively to magnetism. We grew our own films in-situ and used a unique combination of probes, to relate physical/chemical boundary morphology to behavior of magnetic moments at interfaces.
Download or read book Interface Effects In Ultra Thin Films Magnetic and Chemical Properties PHD written by Sungkyun Park and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Magnetocaloric Effect in Thin Films and Heterostructures written by Christopher Bauer and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The goals of this work are the optimization of the magnetocaloric effect in Gadolinium thin film structures. We approach this issue from two directions, that of process optimization and of interface effects. Past results showed Gd2O3 in our Gadolinium thin films, and the presence of such oxide seemed to grow with the temperature at which the film was grown or annealed. Comparison of samples grown without chamber gettering to those that were gettered show differences in their structural and magnetic properties, and we conclude that gettering is an effective step in enhancing the quality of Gd thin film samples. Early work with Gd/W heterostructures showed a diminished magnetization of the interfacial gadolinium, which reduces the magnetocaloric response as magnetic entropy is proportional to m2/3. It is known that Fe interfaces can boost the Gd moments per atom to above that seen in bulk. As such, we fabricated a series of Fe/Gd heterostructures to study the effects on the structural and magnetic properties of Gd thin films. The use of Fe as a base layer shows increased high frequency oscillations in X-ray reflectivity measurements, indicating sharp interfaces between Gd and Fe. The magnetocaloric measurements produce a magnetic entropy curve with a novel tail extending leftward, making this an improved material over Gd for applications around 240K. All the same, vector magnetometry is needed to ensure that such tail is not due to rotations within the plane and is a direction for further study.
Download or read book Thin Films and Heterostructures for Oxide Electronics written by Satishchandra B. Ogale and published by Springer Science & Business Media. This book was released on 2005-11-21 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxides form a broad subject area of research and technology development which encompasses different disciplines such as materials science, solid state chemistry, physics etc. The aim of this book is to demonstrate the interplay of these fields and to provide an introduction to the techniques and methodologies involving film growth, characterization and device processing. The literature in this field is thus fairly scattered in different research journals covering one or the other aspect of the specific activity. This situation calls for a book that will consolidate this information and thus enable a beginner as well as an expert to get an overall perspective of the field, its foundations, and its projected progress.
Download or read book Solid Surfaces Interfaces and Thin Films written by Hans Lüth and published by Springer Science & Business Media. This book was released on 2010-09-02 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solid Surfaces, Interfaces and Thin Films examines both experimental and theoretical aspects of surface, interface and thin film physics. Coverage of magnetic thin films has been expanded, and now includes giant magnetoresistance and the spin-transfer torque mechanism.
Download or read book Magnetism of Surfaces Interfaces and Nanoscale Materials written by Robert E. Camley and published by Elsevier. This book was released on 2015-10-27 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past 30 years, magnetic research has been dominated by the question of how surfaces and interfaces influence the magnetic and transport properties of nanostructures, thin films and multilayers. The research has been particularly important in the magnetic recording industry where the giant magnetoresistance effect led to a new generation of storage devices including hand-held memories such as those found in the ipod. More recently, transfer of spin angular momentum across interfaces has opened a new field for high frequency applications.This book gives a comprehensive view of research at the forefront of these fields. The frontier is expanding through dynamic exchange between theory and experiment. Contributions have been chosen to reflect this, giving the reader a unified overview of the topic. Addresses both theory and experiment that are vital for gaining an essential understanding of topics at the interface between magnetism and materials science Chapters written by experts provide great insights into complex material Discusses fundamental background material and state-of-the-art applications, serving as an indispensable guide for students and professionals at all levels of expertise Stresses interdisciplinary aspects of the field, including physics, chemistry, nanocharacterization, and materials science Combines basic materials with applications, thus widening the scope of the book and its readership
Download or read book Molecular Magnetic Materials written by Barbara Sieklucka and published by John Wiley & Sons. This book was released on 2017-01-17 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive overview of this rapidly expanding interdisciplinary field of research. After a short introduction to the basics of magnetism and molecular magnetism, the text goes on to cover specific properties of molecular magnetic materials as well as their current and future applications. Design strategies for acquiring molecular magnetic materials with desired physical properties are discussed, as are such multifunctional materials as high Tc magnets, chiral and luminescent magnets, magnetic sponges as well as photo- and piezo-switching magnets. The result is an excellent resource for materials scientists, chemists, physicists and crystal engineers either entering or already working in the field.
Download or read book Interface and Topology in Magnetism written by Ali Sucipto Tan and published by . This book was released on 2016 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation explores interface interactions, topology of spin structures, and the use of interface interactions in manipulating the topology of spin structures. First, I will present our work on interface interactions in magnetic thin film heterostructures. A majority of interesting phenomena in magnetic heterostructures are caused primarily by the interface interactions. In exchange bias system CoO/MgO/Fe/Ag(001), the role of frozen and rotatable antiferromagnetic spins in exchange bias system was investigated using X-ray Magnetic Linear Dichroism (XMLD). In the Py/FeMn/Ni/Cu(001) system, the indirect coupling through an antiferromagnetic spacer layer was studied through anisotropy measurements using Rotating-Field Magneto-Optical Kerr Effect (ROTMOKE). Second, I will present our work on artificial topological spin structures. Traditionally, research on nanostructured magnetic materials has focused on the study of uniformly magnetized thin films. With the increasing capability to prepare and manipulate non-uniform spin configurations in recent years, various topological spin structure have been realized. In magnetic thin films, magnetic vortex states can be stabilized by reducing the lateral dimension of the magnetic thin film to the nanoscale due to the increased shape anisotropy. By combining this shape anisotropy and interlayer exchange coupling at the interface, we showed that more complex topological spin structures such as spin skyrmions and hedgehog spin merons can be stabilized and manipulated. By utilizing uniaxial strain in a ferroelectric-ferromagnetic system Co/Cu/PMN-PT(011), we demonstrated a method to manipulate the circulation of a magnetic vortex state using strain.
Download or read book Magnetic Heterostructures written by H. Zabel and published by Springer. This book was released on 2007-10-26 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heterostructures consist of combinations of different materials, which are in contact through at least one interface. Magnetic heterostructures combine different physical properties which do not exist in nature. This book provides the first comprehensive overview of an exciting and fast developing field of research, which has already resulted in numerous applications and is the basis for future spintronic devices.
Download or read book Handbook of Materials Science Volume 2 written by Raghumani S. Ningthoujam and published by Springer Nature. This book was released on with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multiferroics written by Andres Cano and published by Walter de Gruyter GmbH & Co KG. This book was released on 2021-06-21 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multiferroics, materials with a coexistence of magnetic and ferroelectric order, provide an efficient route for the control of magnetism by electric fields. The authors cover multiferroic thin-film heterostructures, device architectures and domain/interface effects. They critically discuss achievements as well as limitations and assess opportunities for future applications.
Download or read book Magnetism of Complex Oxide Thin Films and Heterostructures written by Jodi Iwata and published by . This book was released on 2012 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies of magnetism at reduced scales have revealed new phenomena that are distinctly different from their bulk counterparts providing insight to the fundamental mechanisms that govern magnetism and other correlated properties. To this end, the use of heteroepitaxy and heterostructures is invaluable for investigating magnetism at reduced dimensions and at surfaces and interfaces. This dissertation is a compilation of investigations examining the magnetic properties of spinel-structure oxide thin films and heterostructures. Of particular interest are non-collinear spin systems as closely competing exchange interactions between magnetic moments give rise to a plethora of ground state degeneracies and phenomena inaccessible in the bulk. The first part of this dissertation highlights the use of heteroepitaxial lattice distortions as a method to tune spin functionality and potentially lift ground state degeneracies more broadly in frustrated magnets. It discusses the first synthesis of heteroepitaxial thin films of the frustrated canted-moment ferrimagnet, CuCr2O4, and demonstrates the modification of exchange interaction strengths which results in greater collinear spin ordering and enhanced magnetization compared to the bulk. The data illustrates the sensitivity of the strong competing exchange interactions suggesting that strain is a promising instrument for perturbing the delicate balance of the exchange interactions in frustrated materials. The second part of this dissertation probes magnetic proximity effects induced by interfaces and unconventional transport properties when CuCr2O4 is incorporated as a barrier layer in magnetic tunnel junctions comprised of ferromagnetic La0.7Sr0.3MnO3 and Fe3O4 electrodes. It is surprising that a heterostructure composed entirely of magnetic materials can achieve distinct magnetic and resistive switching given the complexities present at the two barrier-electrode interfaces. Studies of the CuCr2O4/Fe3O4 interface again illustrate the delicate balance between exchange interactions as proximity effects by Fe3O4 are believed to modulate alignment in the Cr moments. Additionally, the bias dependence of JMR displays a local minimum at zero bias which is believed to be the result of the Fe3O4 band structure and spin filtering properties of the CuCr2O4 barrier.
Download or read book Thin Films written by W. K. Liu and published by World Scientific. This book was released on 1999 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heteroepitaxial films are commonplace among today's electronic and photonic devices. The realization of new and better devices relies on the refinement of epitaxial techniques and improved understanding of the physics underlying epitaxial growth. This book provides an up-to-date report on a wide range of materials systems. The first half reviews metallic and dielectric thin films, including chapters on metals, rare earths, metal-oxide layers, fluorides, and high-c superconductors. The second half covers semiconductor systems, reviewing developments in group-IV, arsenide, phosphide, antimonide, nitride, II-VI and IV-VI heteroepitaxy. Topics important to several systems are covered in chapters on atomic processes, ordering and growth dynamics.
Download or read book Magnetism and Magnetic Materials written by J. M. D. Coey and published by Cambridge University Press. This book was released on 2010-03-25 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering basic physical concepts, experimental methods, and applications, this book is an indispensable text on the fascinating science of magnetism, and an invaluable source of practical reference data. Accessible, authoritative, and assuming undergraduate familiarity with vectors, electromagnetism and quantum mechanics, this textbook is well suited to graduate courses. Emphasis is placed on practical calculations and numerical magnitudes - from nanoscale to astronomical scale - focussing on modern applications, including permanent magnet structures and spin electronic devices. Each self-contained chapter begins with a summary, and ends with exercises and further reading. The book is thoroughly illustrated with over 600 figures to help convey concepts and explain ideas clearly. Easily digestible tables and data sheets provide a wealth of useful information on magnetic properties. The thirty-eight principal magnetic materials, and many more related compounds, are treated in detail.
Download or read book Thin Films written by Fatma Sarf and published by BoD – Books on Demand. This book was released on 2024-01-17 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the growth of nanomaterials as thin films. It covers the recent development of thin films using different techniques, such as electrodeposition. It also discusses the widespread use of electrochemical and magnetic applications. This book brings together multidisciplinary chapters written by leading specialists in the field.
