Demonstration of bi-directional microwave-assisted magnetic reversal in synthetic ferrimagnets
2013 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 103, no 14, 142408- p.Article in journal (Refereed) Published
We study spin dynamics in synthetic ferrimagnets, in which two dipole-coupled magnetic nanoparticles are different in thickness or biased asymmetrically with an external field. We observe a splitting of the optical spin-resonance for the two antiparallel ground states of the system and demonstrate how this splitting can be used to deterministically select a particular ground state. The demonstrated resonant switching is a fast and low-field way of controlling the magnetic state of nanodevices currently used in such large scale applications as magnetic random access memory.
Place, publisher, year, edition, pages
2013. Vol. 103, no 14, 142408- p.
Random-Access Memory, Giant Magnetoresistance, Tunnel-Junctions, Multilayers, Mram
Other Physics Topics
IdentifiersURN: urn:nbn:se:kth:diva-133647DOI: 10.1063/1.4824016ISI: 000325488500057ScopusID: 2-s2.0-84885578329OAI: oai:DiVA.org:kth-133647DiVA: diva2:663321
QC 201311112013-11-112013-11-082016-05-24Bibliographically approved