Magnetization, Resistivity and Specific Heat of Hexagonal R_{2}Ni12P7 with Filled-Cr12P7 Structure

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概要

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• We prepared single-crystal samples of hexagonal R_{2}Ni12P7 (R = Sm, Gd--Lu) using a Sn-flux method, and measured their magnetization, resistivity, and specific heat. The antiferromagnetic order in Gd2Ni12P7 and Ho2Ni12P7, the ferromagnetic order in Dy2Ni12P7 and Er2Ni12P7, and the ferromagnetic-like order in Sm2Ni12P7, Tb2Ni12P7, and Tm2Ni12P7 were evidenced by the results of the measurements. In contrast, we found that Yb2Ni12P7 is in a heavy fermion state at low-temperature region. Hump-type anomalies in specific heat were observed below the magnetic transition temperature in R_{2}Ni12P7 (R = Gd, Tb, and Dy), indicating the Zeeman splitting of the J-multiplet of the R^{3+} ion in the ordered state.

• 2012-07-15

著者

• Takeda Naoya

  Faculty Of Engineering Niigata University

• Takeda Naoya

  Faculty of Engineering, Niigata University, Niigata 950-2181, Japan

• Tsuchiya Katsuhiko

  Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan

• Ohashi Atsumi

  Faculty of Engineering, Niigata University, Niigata 950-2181, Japan

• NAKANO Tomohito

  Faculty of Engineering, Niigata University, Niigata 950-2181, Japan

• Nashimoto Takashi

  Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan

• Ono Hiroki

  Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan

• Shirakawa Naoki

  Flexible Electronics Research Center, AIST Tsukuba Central 4, Tsukuba, Ibaraki 305-8562, Japan

• Ono Hiroki

  Graduate School of Biosphere Sci., Hiroshima University

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