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A Mossbauer study of CoMo-substituted barium ferrite

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4 Author(s)
Agresti, D.G. ; Dept. of Phys., Alabama Univ., Birmingham, AL, USA ; Shelfer, T.D. ; Hong, Y.K. ; Paig, Y.J.

Well-resolved Mossbauer spectra were obtained for CoMo-doped barium ferrite with variable doping (0-33% Fe), heat-treatment temperature (825-1200°C), and sample temperature (90-300 K). Substitution was observed to occur primarily on the 12-K site, with little or no lattice distortion. A fitting model using five independent components, each a sextet, yielded the magnetic hyperfine field (ionic moment) of each site as a function of doping and sample temperature. A 10% reduction of the moment on the 2a site was observed upon doping, which results from its proximity to the 12-K site. Other sextet parameters were generally constant or followed monotonic trends

Published in:

Magnetics, IEEE Transactions on  (Volume:25 ,  Issue: 5 )

Date of Publication:

Sep 1989

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