Mossbauer Effect in Antiferromagnetic Fine Particles

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概要

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• Mossbauer measurements were made on fine particles of antiferromagnetic α-Fe○○H with various particle sizes to examine the Mossbauer spectra in fluctuating fields produced by the relaxation of electron spins. In ultra fine samples, the collapse of the internal field due to superparamagnetism was observed. The critical volume at 294°K was found to be 3×10^<-17>cm^3 and the critical temperature for the sample of 1×10^<-17>cm^3 to be 210°K. The effective anisotropy constant was estimated to be of the order of 10^4erg/cm^3. The transitional patterns from the ordinary magnetic splitting (6-line) to the superparamagnetic doublet are discussed and the assignment of the doublet is attempted in comparison with Blume's prediction.

• 社団法人日本物理学会の論文
• 1966-05-05

著者

• Shinjo Teruya

  Department Of Chemistry Faculty Of Science Kyoto University

• Shinjo Teruya

  Department Of Chemistry Faculty Of Science

• Shinjo T.

  Department of Chemistry, Faculty of Science Kyoto University

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• Dynamical Spin Injection into p-Type Germanium at Room Temperature

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