Antiferromagnetic resonance of polycrystalline BiMn2O5
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Data
2015-04-01
Autores
Santana, V. T. [UNESP]
Walmsley, L. [UNESP]
Fier, I. [UNESP]
Eichel, R. -A.
Jakes, P.
Chumak, I.
Ozarowski, A.
van Tol, J.
Nascimento, O. R.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
Multi-frequency electron spin resonance (ESR) measurements in polycrystalline samples of BiMn2O5 were employed to observe antiferromagnetic resonances (AFMR) in the range 0-14 A below the Neel temperature. The experimental data were analyzed using the phenomenological theory of Yosida and Nagamiya. Three resonance modes were identified in the xz (ac) plane from the data at 5 K. Macroscopic constants of anisotropy K-1 = 12.5 x 10(6) erg/cm(3) and K-2 = 7.0 x 10(6) erg/cm(3) were calculated allowing for the single-site anisotropy constant K'to be estimated at T=0 K. The obtained value shows reasonable agreement with theoretical predictions.
Descrição
Palavras-chave
Multiferroics, Magnetic anisotropy, Antiferromagnetic resonance
Como citar
Solid State Communications. Oxford: Pergamon-elsevier Science Ltd, v. 207, p. 40-43, 2015.