Standing spin waves in perpendicularly magnetized circular dots at millimeter waves

• Type: Article in International Scientific Journal
• Date: 2013

Authors

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

Journal

Title: Journal of Applied Physics

Vol. 113

ISSN: 0021-8979

Publisher: American Institute of Physics

Indexing

ISI Web of Knowledge - 6 Citations

Scopus - 5 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 3