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Ferromagnetic resonance of gadolinium doped calcium vanadium garnets

DSpace at IIT Bombay

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Title Ferromagnetic resonance of gadolinium doped calcium vanadium garnets
 
Creator SRIVASTAVA, AK
PATNI, MJ
 
Subject ferrites
 
Description 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
 
Publisher AMER INST PHYSICS
 
Date 2011-07-15T17:47:13Z
2011-12-26T12:49:36Z
2011-12-27T05:34:58Z
2011-07-15T17:47:13Z
2011-12-26T12:49:36Z
2011-12-27T05:34:58Z
1997
 
Type Article
 
Identifier JOURNAL OF APPLIED PHYSICS, 81(4), 1863-1867
0021-8979
http://dx.doi.org/10.1063/1.364015
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4339
http://hdl.handle.net/10054/4339
 
Language en