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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/4339

Title: Ferromagnetic resonance of gadolinium doped calcium vanadium garnets
Authors: SRIVASTAVA, AK
PATNI, MJ
Keywords: ferrites
Issue Date: 1997
Publisher: AMER INST PHYSICS
Citation: JOURNAL OF APPLIED PHYSICS, 81(4), 1863-1867
Abstract: The ferromagnetic resonance (FMR) line shapes of Gd-substituted calcium vanadium garnets Y1.6-zCa1.4GdzFe4V0.4Zr0.6O12 (0.8 less than or equal to z less than or equal to 1.4) have been studied as the function of the Gd content. The samples had been synthesized by two different routes, with porosities varying from 0.23% to 8.9%. The FMR linewidth, Delta H, in low porosity samples is small (15-20 Oe) and becomes seven to eight times higher in high porosity samples. The linewidth can be explained on the basis of Schloemann's theory of anisotropy and porosity broadening in polycrystalline materials. The line shape is Lorentzian for low porosity and Gaussian for high porosity samples. This variation of the FMR line shape with porosity is explained on the basis of the stochastic theory. (C) 1997
URI: http://dx.doi.org/10.1063/1.364015
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4339
http://hdl.handle.net/10054/4339
ISSN: 0021-8979
Appears in Collections:Article

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