Thermal-expansion studies on the low-T phase diagram of α-(BEDT-TTF) 2 KHg(SCN) 4

M. Koeppen, F. Kromer, M. Lang, F. Steglich, T. Sasaki, Naoki Toyota, H. Tajima

研究成果: Conference article査読

抄録

High-resolution thermal-expansion measurements on high-quality single crystals of the title compound reveal thermodynamic evidence for a second-order phase transition at T A = 7.9K. According to the Ehrenfest relation the negative signs of the discontinuities in the coefficient of thermal expansion for directions parallel and perpendicular to the conducting planes correspond to negative uniaxial-pressure dependences of T A with a predominant effect along the intralayer direction. At a temperature slightly above T A , i.e. around 12K, measurements perpendicular to the planes reveal indications for a second anomaly which is field-independent for B ≤ 9.5T but shows a peculiar dependence on the thermal history.

本文言語English
ページ(範囲)2059-2060
ページ数2
ジャーナルSynthetic Metals
86
1 -3 pt 3
DOI
出版ステータスPublished - 1997 1月 1
イベントProceedings of the 1996 International Conference on Science and Technology of Synthetic Metals, ICSM'96. Part 3 (of 3) - Snowbird, UT, USA
継続期間: 1996 7月 281996 8月 2

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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