Calorimetric Study in Single Crystalline RCu<SUB>2</SUB>Si<SUB>2</SUB> (R: Rare Earth)

• Takeda Yuji

  Graduate School of Science, Osaka University

• Dung Nguyen Duc

  Graduate School of Science, Osaka University Advanced Science Research Center, Japan Atomic Energy Agency

• Nakano Yasunori

  Graduate School of Science, Osaka University

• Ishikura Tatsurou

  Graduate School of Science, Osaka University

• Ikeda Shugo

  Advanced Science Research Center, Japan Atomic Energy Agency

• Matsuda Tatsuma D.

  Advanced Science Research Center, Japan Atomic Energy Agency

• Yamamoto Etsuji

  Advanced Science Research Center, Japan Atomic Energy Agency

• Haga Yoshinori

  Advanced Science Research Center, Japan Atomic Energy Agency

• Takeuchi Tetsuya

  Low Temperature Center, Osaka University

• Settai Rikio

  Graduate School of Science, Osaka University

• Onuki Yoshichika

  Graduate School of Science, Osaka University Advanced Science Research Center, Japan Atomic Energy Agency

Bibliographic Information

Other Title

• Calorimetric study in single crystalline RCu2Si2 (R: Rare Earth)

Abstract

Specific heat measurements on a series of ternary compound RCu₂Si₂ (R: La, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) single crystals have been performed by the quasi-adiabatic heat pulse method in the wide temperature range from 0.1 to 80 K. Almost all the compounds show antiferromagnetic orderings at low temperatures. We found the first-order like very sharp specific heat peaks in RCu₂Si₂ with R=Gd, Tb, Dy, Ho, and Er. Especially, the antiferromagnetic ordering in DyCu₂Si₂ is found to be a first-order transition. From the analyses of the temperature dependence of magnetic entropy, we confirmed that the total splitting energy of the crystalline electric field (CEF) scheme of R³⁺ ion in RCu₂Si₂ is about 100 K in all the compounds studied here, except for YbCu₂Si₂. In addition, we observed the nuclear specific heat at low temperatures and estimated the magnitude of internal effective magnetic field H_eff at the nucleus.

Journal

• Journal of the Physical Society of Japan

  Journal of the Physical Society of Japan 77 (10), 104710-104710, 2008

  THE PHYSICAL SOCIETY OF JAPAN

Keywords

• RCu<SUB>2</SUB>Si<SUB>2</SUB>
• single crystals
• specific heat
• crystalline electric field
• nuclear specific heat

Details

• CRID: 1390282679173839488
• NII Article ID: 130005436157
• NII Article ID: 110006969306
• NII Article ID: 210000107476
• NII Book ID: AA00704814
• DOI: 10.1143/jpsj.77.104710
• BIBCODE: 2008JPSJ...77j4710T
• ISSN: 13474073
• ISSN: 00319015
• NDL BIB ID: 9748853
• Web Site: http://id.ndl.go.jp/bib/9748853
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9748853
• Web Site: https://journals.jps.jp/doi/pdf/10.1143/JPSJ.77.104710
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed