Magnetic Property and Phase Diagram of the Diluted Antiferromagnet Mn_xMg_<1-x>TiO_3
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概要
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In order to investigate the rnechanisu'ta of the occurrence of a spin-glass freezing in dilutedantiferromagnets, we have uneasured tlae ternperature variation of the low-field dc-magnetizationsfor the single crvstal sarnrles of the dilttted antiferromaunet lVIn.[VIuu .TiOa (0.50< x< 0.96).We also performed ac-susceptibility rneasurements and neutron scattering rneasurenaents. Wehave found that the samples with 0.62< x< 0.96 establish antiferrornagnetic long-range order atlow temperatures, the sample with x : 0.60 behaves like a reentrant-spin-glass system, and thesamples with 0.50< x< 0.56 behave like a spin-glass systern. From these results, we constructthe naagnetic phase diagram of Mn.Mg) .TiO3 in the concentration-temperature plane. Theorigin of the spin-glass behavior and reentrant-spin-glass behavior is discussed in relation to thepercolation concentration of diluted naagnetic systems.
- 社団法人日本物理学会の論文
- 1996-07-15
著者
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TOBO Aya
Department of Physics, Graduate School of Science, Tohoku University
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Tobo A
Department Of Physics Graduate School Of Science Tohoku University
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Tobo Aya
The Institute Of Physical And Chemical Research(riken)
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Ito Atsuko
Department of Pathology, Tsurumi University School of Dental Medicine
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Ito Atsuko
Department Of Legal Medicine Toho University School Of Medicine
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Ito Atsuko
Department Of Physics Fculty Of Science Ochanomizu University
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Ito A
Department Of Physics Ochanomizu University:(present)the Institute Of Physical And Chemical Research
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Ito Atsuko
Department Of Physics Faculty Of Science Ochanomizu University
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MOTOYA Kiyoichiro
Department of Metal Science and Technology,Kyoto University
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Ito A
Department Of Physics Faculty Of Science Ochanomizu University
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Motoya K
Sci. Univ. Tokyo Chiba
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Motoya Kiyoichiro
Department Of Metal Science And Technology Kyoto University:institute For Solid State Physics Univer
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TOBO Aya
Doctoral Research Course in Human Culture,Ochanomizu University
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Ito Atsuko
Department Of Legal Medicine School Of Medicine Toho University
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