Author: Jooho ParkPublisher:
ISBN:
Category :
Languages : en
Pages : 292
Book Description
Spin Dynamics in Magnetic Vortex Structures
Author: Jooho ParkSpin Dynamics in Confined Magnetic Structures III
Author: Burkard HillebrandsPublisher: Springer Science & Business Media
ISBN:
Category : Science
Languages : en
Pages : 368
Book Description
This third volume of Spin Dynamics in Confined Magnetic Structures addresses central aspects of spin-dynamic phenomena, including recent new developments, on a tutorial level. Researchers will find a comprehensive compilation of the current work in the field. Introductory chapters help newcomers to understand the basic concepts. The more advanced chapters give the current state of the art of spin dynamic issues ranging from the femtosecond to the microsecond regime. This volume concentrates on new experimental techniques such as ferromagnetic-resonance-force microscopy and two-photon photoemission, as well as on aspects of precessional switching, spin-wave excitation, vortex dynamics, spin relaxation, domain-wall dynamics in nanowires and their applications to magnetic logic devices. An important chapter is devoted to the presently very hot subject of the spin-transfer torque, combining the physics of electronic transport and micromagnetics. The comprehensive presentation of these developments makes this volume a very timely and valuable resource for every researcher working in the field of magnetism.
Spin Dynamics in Confined Magnetic Structures III
Author: Burkard HillebrandsPublisher: Springer
ISBN: 9783540800323
Category : Science
Languages : en
Pages : 345
Book Description
The third volume of this book addresses central aspects of spin-dynamic phenomena on a tutorial level. This volume concentrates on new experimental techniques such as ferromagnetic-resonance-force microscopy and two-photon photoemission. There is a chapter devoted to the hot subject of spin-transfer torque. The comprehensive presentation makes this a timely and valuable resource for every researcher working in the field of magnetism.
Spin Dynamics in Confined Magnetic Structures II
Author: Burkard HillebrandsPublisher: Springer Science & Business Media
ISBN: 3540440844
Category : Science
Languages : en
Pages : 343
Book Description
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.
Spin Dynamics in Confined Magnetic Structures I
Author: Burkard HillebrandsPublisher: Springer Science & Business Media
ISBN: 3540409076
Category : Science
Languages : en
Pages : 363
Book Description
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. Emphasis is placed on both the discussion of the experimental techniques and on the theoretical work. The comprehensive presentation of these developments makes this volume very timely and valuable for every researcher working in the field of magnetism.
Spin Dynamics in Confined Magnetic Structures I
Author: Burkard HillebrandsPublisher: Springer Science & Business Media
ISBN: 3540411917
Category : Science
Languages : en
Pages : 363
Book Description
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. Emphasis is placed on both the discussion of the experimental techniques and on the theoretical work. The comprehensive presentation of these developments makes this volume very timely and valuable for every researcher working in the field of magnetism.
A Simulation Study of Magnetic Vortex Structures and Spin Dynamic Modes in Permalloy Materials
Author: Wang HaoNanoscale Studies of Spin Dynamics in Confined Geometries Using Soft X-ray Transmission Microscopy
Author: Brooke Lu MeslerPublisher:
ISBN:
Category :
Languages : en
Pages : 136
Book Description
Understanding and controlling the manipulation of spin structures on a nanometer length scale is of primary importance to contemporary scientific investigations and future technological applications of magnetic materials. Soft x-ray transmission microscopy offers imaging with a spatial resolution down to 10 nm, and a temporal resolution of about 70 psec, with element specific magnetic contrast. As such, it is an ideal method for studying fast nanoscale spin dynamics. The focus of this dissertation is on imaging the response of magnetic vortex cores to external applied fields using soft x-ray transmission microscopy. A technique for pinpointing vortex dynamics without time resolution was used to survey the response of a vortex core to RF fields of varying frequency and amplitude. This investigation revealed an unexpected nonlinear response of the vortex core at higher amplitude driving frequencies. Time-resolved images of the vortex core response in the linear regime were taken using a technique which phase-locked the RF driving field to the x-ray imaging pulses. These experimental images probing the frequency response of the vortex core motion are the initial step towards a deeper understanding of the behavior of the vortex core when driven by magnetic fields with frequencies near its resonant frequency. In addition to investigating the dynamic response of a single vortex core, a magnetic system with two interacting vortex cores was studied. A patterned rectangular magnetic sample with a 7-domain magnetization configuration and two vortex cores at remanence was used in this experiment. The magnetization of this sample was imaged after the application of a fast magnetic field pulse using a pump-probe time-resolved imaging technique. The images taken showed a distortion of the vortex cores after the pulse was applied, and combined with simulation, these results provide strong evidence for the creation and annihilation of vortex-antivortex core pairs during the excitation of the initial vortices. This lends support to the many theories suggesting that a vortex-antivortex core pair is created and annihilated during the switching of vortex core polarity. The studies outlined in this dissertation demonstrate the strength of transmission soft x-ray microscopy as a tool for investigating spin dynamics.
Spin Dynamics in Confined Magnetic Structures II
Author: Burkard HillebrandsPublisher:
ISBN: 9783662308653
Category :
Languages : en
Pages : 340
Book Description
Author: