Finite-temperature dynamical and static properties of Nd magnets studied by an atomistic modeling

Finite-temperature dynamical and static properties of Nd magnets studied by an atomistic modeling

We investigate static and dynamical properties of the Nd permanent magnet, Nd2Fe14B, using a recently developed atomistic model. We show the temperature dependence of magnetizations and domain wall profiles by a Monte Carlo method. With the use of the stochastic Landau-Lifshitz-Gilbert method, we pr...

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Main Authors: Masamichi Nishino, Ismail Enes Uysal, Taichi Hinokihara, Seiji Miyashita
Format: Article
Language:English
Published: AIP Publishing LLC 2021-02-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/9.0000070
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spelling doaj-1aabc69cd58944569b35dd40490b87162021-03-02T21:48:04ZengAIP Publishing LLCAIP Advances2158-32262021-02-01112025102025102-810.1063/9.0000070Finite-temperature dynamical and static properties of Nd magnets studied by an atomistic modelingMasamichi Nishino0Ismail Enes Uysal1Taichi Hinokihara2Seiji Miyashita3Research Center for Advanced Measurement and Characterization, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, JapanElements Strategy Initiative Center for Magnetic Materials, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, JapanInstitute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa 277-8581, JapanElements Strategy Initiative Center for Magnetic Materials, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, JapanWe investigate static and dynamical properties of the Nd permanent magnet, Nd2Fe14B, using a recently developed atomistic model. We show the temperature dependence of magnetizations and domain wall profiles by a Monte Carlo method. With the use of the stochastic Landau-Lifshitz-Gilbert method, we present an unusual temperature dependence of the ferromagnetic resonance frequency. By introducing a statistical method which extends the limitation of the simulation time, we estimate the coercive force of a single grain. We also show the surface anisotropy effect of Nd atoms on the coercive force and nucleation and pinning fields in a prototype hard-soft-hard magnet model.http://dx.doi.org/10.1063/9.0000070
collection DOAJ
language English
format Article
sources DOAJ
author Masamichi Nishino
Ismail Enes Uysal
Taichi Hinokihara
Seiji Miyashita
spellingShingle Masamichi Nishino
Ismail Enes Uysal
Taichi Hinokihara
Seiji Miyashita
Finite-temperature dynamical and static properties of Nd magnets studied by an atomistic modeling
AIP Advances
author_facet Masamichi Nishino
Ismail Enes Uysal
Taichi Hinokihara
Seiji Miyashita
author_sort Masamichi Nishino
title Finite-temperature dynamical and static properties of Nd magnets studied by an atomistic modeling
title_short Finite-temperature dynamical and static properties of Nd magnets studied by an atomistic modeling
title_full Finite-temperature dynamical and static properties of Nd magnets studied by an atomistic modeling
title_fullStr Finite-temperature dynamical and static properties of Nd magnets studied by an atomistic modeling
title_full_unstemmed Finite-temperature dynamical and static properties of Nd magnets studied by an atomistic modeling
title_sort finite-temperature dynamical and static properties of nd magnets studied by an atomistic modeling
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2021-02-01
description We investigate static and dynamical properties of the Nd permanent magnet, Nd2Fe14B, using a recently developed atomistic model. We show the temperature dependence of magnetizations and domain wall profiles by a Monte Carlo method. With the use of the stochastic Landau-Lifshitz-Gilbert method, we present an unusual temperature dependence of the ferromagnetic resonance frequency. By introducing a statistical method which extends the limitation of the simulation time, we estimate the coercive force of a single grain. We also show the surface anisotropy effect of Nd atoms on the coercive force and nucleation and pinning fields in a prototype hard-soft-hard magnet model.
url http://dx.doi.org/10.1063/9.0000070
work_keys_str_mv AT masamichinishino finitetemperaturedynamicalandstaticpropertiesofndmagnetsstudiedbyanatomisticmodeling
AT ismailenesuysal finitetemperaturedynamicalandstaticpropertiesofndmagnetsstudiedbyanatomisticmodeling
AT taichihinokihara finitetemperaturedynamicalandstaticpropertiesofndmagnetsstudiedbyanatomisticmodeling
AT seijimiyashita finitetemperaturedynamicalandstaticpropertiesofndmagnetsstudiedbyanatomisticmodeling
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