Ferromagnetic vortex core switching at elevated temperatures

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27740%2F14%3A86092769" target="_blank" >RIV/61989100:27740/14:86092769 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1103/PhysRevB.89.014421" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.89.014421</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevB.89.014421" target="_blank" >10.1103/PhysRevB.89.014421</a>

Result language

angličtina

Original language name

Ferromagnetic vortex core switching at elevated temperatures

Original language description

An approach for the investigation of vortex core switching is presented. Thermal effects up to the Curie point are included in a micromagnetic framework based on the recently developed Landau-Lifshitz-Bloch equation. In this approach it is easier to avoid numerical discretization artifacts, commonly present when a Bloch point is mediating the switching process. Switching in thin circular permalloy disks caused by the application of a slowly increasing magnetic ?eld oriented orthogonally to the disk is considered. An energy barrier which can be overcome by thermal ?uctuations is taken into account, leading to a strong in?uence of the temperature on the switching ?eld.Inparticular,the switching ?eld goes to zero at a signi?cantly smaller temperature thanthe Curie temperature. The deduced nucleation volume is smaller than the typical grain size in permalloy.

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BE - Theoretical physics

OECD FORD branch

—

Project

<a href="/en/project/EE2.3.30.0055" target="_blank" >EE2.3.30.0055: New creative teams in priorities of scientific research</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review B

ISSN

1098-0121

e-ISSN

—

Volume of the periodical

89

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

8

Pages from-to

014421-014428

UT code for WoS article

—

EID of the result in the Scopus database

—