Thermal expansion anomaly and pressure effect on the Curie temperature of Lu 6 (Mn 1-x Fe x ) 23 compounds

M. Ohta, Asaya Fujita, K. Fukamichi, M. Yamada, T. Goto, E. Matsubara, H. Takahashi

研究成果: Article査読

2 被引用数 (Scopus)

抄録

The thermal expansion and specific heat measurements under ambient pressure and the thermomagnetization measurement under applied pressure for new Lu 6 (Mn 1-x Fe x ) 23 compounds have been carried out in order to discuss the relationship between the thermal expansion anomaly and the spin fluctuations. The thermal expansion coefficient α significantly increases above the Curie temperature T C . The electronic specific heat coefficient increases with increasing x, accompanied by the decrease of the spin fluctuation spectral width. The value of the pressure dependence of T C , ∂T C /∂ P, is large at about -50 K GPa -1 . The anti-invar effect and the pressure effect of T C are closely related to a significant thermal variation of the amplitude of spin fluctuations.

本文言語English
ページ(範囲)5551-5562
ページ数12
ジャーナルJournal of Physics Condensed Matter
15
32
DOI
出版ステータスPublished - 2003 8 20

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学

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「Thermal expansion anomaly and pressure effect on the Curie temperature of Lu <sub>6</sub> (Mn <sub>1-x</sub> Fe <sub>x</sub> ) <sub>23</sub> compounds」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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