Standing spin waves in perpendicularly magnetized circular dots at millimeter waves

• Tipo: Artigo em Revista Científica Internacional
• Data: 2013

Autores

Nedukh, SV (Autor) Outra; Tarapov, SI (Autor) Outra; Belozorov, DP (Autor) Outra; Kharchenko, AA (Autor) Outra; Golub, VO (Autor) Outra; Kilimchuk, IV (Autor) Outra; Salyuk, OY (Autor) Outra; Tartakovskaya, EV (Autor) Outra; Bunyaev, SA (Autor) FCUP; G.N. Kakazei (Autor) REIT

Revista

Título: Journal of Applied Physics

Vol. 113

ISSN: 0021-8979

Editora: American Institute of Physics

Indexação

ISI Web of Knowledge - 6 Citações

Scopus - 6 Citações

Outras Informações

ID Authenticus: P-005-0SP

DOI: 10.1063/1.4799528

Abstract (EN): Spin wave spectra of 40-nm thick perpendicularly magnetized circular Permalloy dots of 250 nm radius were measured using ferromagnetic resonance technique in 70-80GHz range at 4.2 K and in 10GHz at room temperature. The five sharp resonance peaks were observed for both frequency ranges. The resonance fields can be well described by a magneto-exchange dispersion relation, implying that the observed resonances correspond to circular "drumhead" modes with Bessel-function profiles. The relative distances between neighbor peaks for different frequency ranges were almost the same, while the absolute interpeak distances in millimeter range were similar to 30% bigger than at 10GHz, as predicted by the theory. (C) 2013 American Institute of Physics.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 3