Pressure Effects on Heat Capacity of the Haldane System NENP

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概要

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• Heat capacity rneastrrennent has been carried out on the Haldane system NENP under thepressure P between 0 kbar< P< 4.8 kbar. The energy gap ,) is found to increase sensitivelyin proportion to the pressure following A :: ,Ag(l % 7x5P). The estitnated value of 7n5 is6.35-iO.30 x 10 'bar ', where y corresponds to the magnetic Griineisen constant and n5 to thecompressibility along the chain axis of the NENP. No trace of three-dimensional ordering is de-tected in the present pressure and temperature ranges. The amplitude of magnetic heat capacityis not constant and increases rovrghly with incre?vsing pressvxre. This behavior is considered to bedue to the pressure dependence of single ion anisotropy D and interchain exchange interactionJ'.

• 社団法人日本物理学会の論文
• 1997-05-15

著者

• KAWAE Tatsuya

  Department of Applied Quantum Physics, Kyushu University

• TAKEDA Kazuyoshi

  Department of Applied Quantum Physics, Kyushu University

• Masakazu Ito

  Department Of Quantum Matter Adsm Hiroshima University

• Kawae Tatsuya

  Department Of Applied Quantum Physics Kyushu University

• ITO Masakazu

  Venture Business Laboratory,Kyusyu University

• YAMASHITA Hideo

  Department of Applied Science,Faculty of Engineering,Kyusyu University

• Yamashita Hideo

  Department Of Applied Science Faculty Of Engineering Kyusyu University

• Ito Masakazu

  Department Of Applied Science Faculty Of Engineering Kyushu University

• Takeda Kazuyoshi

  Department Of Applied Quantum Physics Faculty Of Engineering Kyushu University:institute Of Environm

• Yamashita Hideto

  Department of Applied Science,Faculty of Engineering,Kyusyu University

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