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Type: Artigo de periódico
Title: Ferromagnetic resonance studies in granular CoCu codeposited films
Author: Pires, MJM
Mansanares, AM
da Silva, EC
Schmidt, JE
Meckenstock, R
Pelzl, J
Abstract: Experimental ferromagnetic resonance (FMR) data are presented for CoCu granular films obtained by electron beam codeposition. CoxCu100-x films were prepared for x = 10 and 30 and were subsequently submitted to a thermal treatment. For the 10% Co samples one found three main resonance modes, one of them constituting of non-interacting Co particles. External field angular variation and temperature-dependent FMR experiments were proceeded and straight calculations of the involved resonance intensities as well. A strict correlation of the presented FMR data with the previous X-Ray diffraction, magnetization, and particle size investigations was possible. The link between structural changes and magnetic properties of the samples could be verified. For the 30% Co samples a broad resonance line for the in-plane configuration was found, which is characteristic for polycrystalline systems. In the perpendicular configuration a spin wave spectra were present on all samples and one could identify some of the modes as surface modes. These samples with 30% Co become more heterogeneous with increasing thermal treatment. (c) 2005 Elsevier B.V. All rights reserved.
Subject: ferromagnetic resonance
granular magnetic films
Country: Holanda
Editor: Elsevier Science Bv
Citation: Journal Of Magnetism And Magnetic Materials. Elsevier Science Bv, v. 300, n. 2, n. 382, n. 391, 2006.
Rights: fechado
Identifier DOI: 10.1016/j.jmmm.2005.05.024
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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