The thermal expansion coefficient and volume magnetostriction of Heusler Ni2MnGa alloys

V. D. Buchelnikov, V. V. Khovailo, T. Takagi

研究成果: Conference article査読

28 被引用数 (Scopus)

抄録

In this work the thermal expansion coefficient of Ni2MnGa alloy was experimentally determined. It was shown that the thermal expansion coefficient has a peak at the point of magnetic phase transition. The value of thermal expansion coefficient jump at Curie point is Δκ=1. 8×10-5 K-1. From the phenomenological Ginzburg-Landau theory of a magnetic second-order phase transition the expression for a jump of thermal expansion coefficient in Curie point was obtained. From the comparison of experimental and theoretical jumps of thermal expansion the value of volume magnetostriction for Ni2MnGa alloy was determined: B1≈20×109 erg/cm3.

本文言語English
ページ(範囲)e459-e461
ジャーナルJournal of Magnetism and Magnetic Materials
300
1
DOI
出版ステータスPublished - 2006 5
イベントThird International Symposium on Magnetism 2005 -
継続期間: 2005 6 262005 6 30

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

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