Microwave absorption properties of permalloy nanodots in the vortex and quasi-uniform magnetization states

• Tipo: Artigo em Revista Científica Internacional
• Data: 2014

Autores

Guslienko, KY (Autor) Outra; G.N. Kakazei (Autor) FCUP; Kobljanskyj, YV (Autor) Outra; Melkov, GA (Autor) Outra; Novosad, V (Autor) Outra; Slavin, AN (Autor) Outra

Revista

Título: New Journal of Physics

Vol. 16

ISSN: 1367-2630

Editora: Institute of Physics Publishing

Indexação

ISI Web of Knowledge - 13 Citações

Scopus - 15 Citações

Outras Informações

ID Authenticus: P-009-N1B

DOI: 10.1088/1367-2630/16/6/063044

Abstract (EN): When the in-plane bias magnetic field acting on a flat circular magnetic dot is smaller than the saturation field, there are two stable competing magnetization configurations of the dot: the vortex and the quasi-uniform (C-state). We measured microwave absorption properties in an array of non-interacting permalloy dots in the frequency range 1-8 GHz when the in-plane bias magnetic field was varied in the region of the dot magnetization state bi-stability. We found that the microwave absorption properties in the vortex and quasi-uniform stable states are substantially different, so that switching between these states in a fixed bias field can be used for the development of reconfigurable microwave magnetic materials.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10