Anomalous Compressibility Associated with First Order Valence Change in YbInCu4.

• Arnold Z.

  Institute of Physics, Academy of Sciences of Czech Republic

• Kamarád J.

  Institute of Physics, Academy of Sciences of Czech Republic

• Teresa J. M. De

  Dpto Fisica de la Materia Condensada-ICMA, Facultad de Ciencias

• Ibarra M. R.

  Dpto Fisica de la Materia Condensada-ICMA, Facultad de Ciencias

書誌事項

タイトル別名

• Anomalous Compressibility Associated wi

抄録

Thermal expansion of the YbInCu₄ compound and volume anomaly ω_v associated with a sudden change of Yb valence v at T_v were measured under pressure up to 10 kbar. Both, the temperature T_v≈40 K and the anomaly ω_v = 0. 43% decrease under pressure linearly (with slopes dT_v/dp=-2. 2 K/kbar^-1 and dω_v /dp =-0. 021%kbar^-1) up to a critical pressure pc≅20 kbar. The compressibility κ increases below T_V, κ=1. 22 Mbar^-1 at 20K and κ= 0. 99 Mbar^-1 at 295 K. A derived pressure change of v (or f-shell occupation n_f), dv/dp≈0. 005 kbar^-1, leads to d lnV_Yb/dn_fƒ0. 15.

収録刊行物

• 高圧力の科学と技術

  高圧力の科学と技術 7 623-625, 1998

  日本高圧力学会

キーワード

• valence fluctuation
• thermal expansion
• compressibility
• rare earth intermetallics

詳細情報

• CRID: 1390282679358413056
• NII論文ID: 10002691221
• NII書誌ID: AN10452913
• DOI: 10.4131/jshpreview.7.623
• ISSN: 13481940
• ISSN: 0917639X
• NDL書誌ID: 4494002
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4494002
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可