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1. Low Temperature Specific Heat of RMn2Compounds with the Hexagonal C14 Structure (R=Y, Yb and Th)

Author

Masayuki Shiga, Hideto Imai, L. Formicheva, Kazuko Inoue, Hirofumi Wada, Y. Nakamura, A.V. Tsvyashchenko, and Hiroyuki Nakamura

Subjects
Paramagnetism, Materials science, Condensed matter physics, Specific heat, Hexagonal crystal system, General Physics and Astronomy, Atmospheric temperature range, Spin (physics)
Abstract

The specific heat of C14 YMn 2 , YbMn 2 and ThMn 2 was measured in the temperature range of 1.4 K to 10 K. The huge values of specific heat were observed for all compounds. The origin of the huge values of specific heat are considered to be derived from two mechanisms. For C14 YMn 2 and ThMn 2 , those are ascribed to the excitations of large spin fluctuations of Mn moments. On the other hand, the extraordinary large value of YbMn 2 is due to the paramagnetic Yb moment.

Published
1997

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