Cation distribution in Ni-substituted Mn-ferrites by Mössbauer technique

被引：0
作者：
M. Siddique
N. M. Butt
M. Shafi
T. Abbas
-ul-Islam Misbah
机构：
[1] NPD,Department of Materials Science
[2] PINSTECH,Department of Materials Science
[3] B.Z. University,undefined
[4] B.Z. University,undefined
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2003年 / 258卷
关键词：
Magnetic Field; Physical Chemistry; Inorganic Chemistry; Line Width; Isomer Shift;
D O I：
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学科分类号：
摘要：
Mössbauer measurements have been carried out on Ni-substituted Mn-ferrites, Mn1-xNixFe2O4 (x = 0, 0.25, 0.50, 0.75 and 1.0), at room temperature. The cation distribution at tetrahedral (A) and octahedral (B) sites and its effect on Mössbauer parameters is studied. Mn2+ ions are found to occupy sites A and B both, while Ni2+ ions occupy site B only. It has been observed that the internal magnetic fields (Heff) for all B sites increase and it remains almost constant for site A with increasing Ni concentration. The line widths of the most of B sites are decreased and no significant change is observed in isomer shift with increasing Ni concentration.
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页码：525 / 529
页数：4
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