Scalar Order in PrFe<SUB>4</SUB>P<SUB>12</SUB> Studied by Thermal Expansion and Magnetostriction

• Tayama Takashi

  Institute for Solid State Physics, University of Tokyo

• Isobe Yuta

  Institute for Solid State Physics, University of Tokyo

• Sakakibara Toshiro

  Institute for Solid State Physics, University of Tokyo

• Sugawara Hitoshi

  Faculty of Integrated Arts and Sciences, The University of Tokushima

• Sato Hideyuki

  Department of Physics, Tokyo Metropolitan University

Bibliographic Information

Other Title

• Scalar order in PrFe4P12 studied by thermal expansion and magnetostriction

Abstract

We present the results of high-resolution measurements of the thermal expansion and magnetostriction of the cubic filled skutterudite compound PrFe₄P₁₂. The temperature dependence of the thermal expansion ΔL(T)⁄L for the three main symmetry directions are nearly identical below T_A, in accordance with a recently proposed scalar order parameter for the A-phase. In the field-angle dependence of the transverse thermal expansion ΔL(θ)⁄L along the [001] direction (θ is the angle between the [100] direction and the orientation of a magnetic field within the (001) plane), we find clear twofold oscillation. On the basis of mean-field analyses, we show that the observed twofold oscillation can be interpreted as the the crystal field effect for the cubic T_h symmetry. Our results suggest that the crystal field scheme consists of a Γ₁ ground state and a Γ₄⁽¹⁾ first-excited state, in both the non-ordered and A-phases.

Journal

• Journal of the Physical Society of Japan

  Journal of the Physical Society of Japan 78 (4), 044708-044708, 2009

  THE PHYSICAL SOCIETY OF JAPAN

Keywords

• PrFe<SUB>4</SUB>P<SUB>12</SUB>
• filled skutterudite
• thermal expansion
• scalar order
• <I>T<SUB>h</SUB></I> symmetry
• crystal field

Details

• CRID: 1390282679173291520
• NII Article ID: 130005437454
• NII Article ID: 10025959660
• NII Article ID: 210000107775
• NII Book ID: AA00704814
• DOI: 10.1143/jpsj.78.044708
• ISSN: 13474073
• ISSN: 00319015
• NDL BIB ID: 10206597
• Web Site: http://id.ndl.go.jp/bib/10206597
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10206597
• Web Site: https://journals.jps.jp/doi/pdf/10.1143/JPSJ.78.044708
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed