Effect of La Impurities on the Phase Transitions in PrFe<SUB>4</SUB>P<SUB>12</SUB>

• 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

• Aoki Yuji

  Department of Physics, Tokyo Metropolitan University

• Sato Hideyuki

  Department of Physics, Tokyo Metropolitan University

Bibliographic Information

Other Title

• Effect of La impurities on the phase transitions in PrFe4P12

Abstract

The effect of La impurities on the low-field (A phase) and high-field (B phase) ordered states in PrFe₄P₁₂ has been studied using dc magnetization measurements on a series of Pr_1−xLa_xFe₄P₁₂ (x=0, 0.01, 0.05, and 0.15). It is found that the long-range A phase order evolves to a short-range one at a very small La concentration between x=0.01 and 0.05. We also find clear evidence for the existence of ferromagnetism in the sample with x≥0.05. Remarkably, the ferromagnetic ordering temperature T_C increases from 1.05 K for x=0.05 to 1.45 K for x=0.15, although the Weiss temperature decreases with increasing x. These observations indicate the competition between the A phase and ferromagnetic state, and the role of nesting on the A phase transition is emphasized.

Journal

• Journal of the Physical Society of Japan

  Journal of the Physical Society of Japan 76 (8), 083702-083702, 2007

  THE PHYSICAL SOCIETY OF JAPAN

Keywords

• PrFe<SUB>4</SUB>P<SUB>12</SUB>
• filled skutterudite
• impurity effect
• magnetization
• phase diagram
• Fermi surface nesting

Details

• CRID: 1390001204196437376
• NII Article ID: 130005296965
• NII Article ID: 110006366831
• NII Article ID: 210000106819
• NII Book ID: AA00704814
• DOI: 10.1143/jpsj.76.083702
• ISSN: 13474073
• ISSN: 00319015
• NDL BIB ID: 8863426
• Web Site: http://id.ndl.go.jp/bib/8863426
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8863426
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.76.083702
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed