Effects of Spin Fluctuations on the Specific Heat in YMn_2 and Y0_<0.97> Sc_<0.03> Mn_2
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概要
- 論文の詳細を見る
The specific heat measurements of YMn_2 and Y_<0.97> Sc_<0.03> Mn_2, which exhibit giant spin fluctuatuions in the paramagnetic state, were carried out in the temperature range of 13 K to 300 K. The spin fluctuation contribution to the specific heat C_m was estimated by subtracting the phonon and electronic parts. The magnetic entropy S_m was deduced from C_m. Above 120 K, where the the effect of the antiferromagnetic transition vanishes, the entropy curves of two compounds coincide each other, indicating that in the paramagnetic state, YMn_2 has the same amplitude of spin fluctuations as Y_<0.97> Sc_<0.03>Mn_2. The absolute value of the entropy was also discussed taking account of results of neutron scattering measurements.
- 社団法人日本物理学会の論文
- 1995-06-15
著者
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Shiga Masayuki
Department Of Material Science And Engineering Kyoto University
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Wadati H.
Department Of Physics And Astronomy University Of British Columbia
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Wada Hirofumi
Department Materials Science And Engineering Kyoto University
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Imai H
Institute For Molecular Science Okazaki National Institutes:(present Address)department Of Chemistry
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Imai Hideto
Department Of Gastroenterology Gifu Prefectural Tajimi Hospital
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