Fast Vortex Core Switching at Moderate Temperatures
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F15%3A86096203" target="_blank" >RIV/61989100:27640/15:86096203 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.12693/APhysPolA.127.342" target="_blank" >http://dx.doi.org/10.12693/APhysPolA.127.342</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.12693/APhysPolA.127.342" target="_blank" >10.12693/APhysPolA.127.342</a>
Alternative languages
Result language
angličtina
Original language name
Fast Vortex Core Switching at Moderate Temperatures
Original language description
Ferromagnetic vortex core switching is investigated using micromagnetic simulations. For that the OOMMF program is used together with a temperature extension we have developed recently. This is a continuum micromagnetic approach, where the well-known Landau-Lifshitz-Gilbert equation (valid for zero temperature) is replaced by the Landau-Lifshitz-Bloch equation. In our research we simulate switching of a ferromagnetic vortex core in a flat disk (diameter 200 nm, thickness 20 nm) with material parametersthat resemble permalloy. Temperatures in the range 400 K to 700 K are considered. Switching itself is caused by application of a very short oscillating magnetic pulse. Parameters used resemble conditions met in the experiment: oscillation period 141 ps (equal to the peak width) and amplitude 60 mT. Surprisingly, no large temperature- or discretization dependence is found. Reasons for that are discussed.
Czech name
—
Czech description
—
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BE - Theoretical physics
OECD FORD branch
—
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Acta Physica Polonica A
ISSN
0587-4246
e-ISSN
—
Volume of the periodical
127
Issue of the periodical within the volume
2
Country of publishing house
PL - POLAND
Number of pages
3
Pages from-to
342-344
UT code for WoS article
—
EID of the result in the Scopus database
2-s2.0-84927632131