Magnetic properties of tetragonal Ce1-xLuxB 2C2 (0 ≤ x ≤ 0.31) compounds

Aya Tobo, Kenichi Ishimoto, Junya Konno, Kenji Ohoyama, Koji Kaneko, Yasuo Yamaguchi, Hideya Onodera

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Specific heat, dc- and ac-magnetic susceptibility and magnetization measurements were performed on rare earth intermetallic compounds Ce 1-xLuxB2C2 (0 ≤ x ≤ 0.31) in order to elucidate the magnetic interaction in CeB2C2. In the process of the substitution of Ce by Lu in CeB2C2, the characteristics of magnetic transition change from a first-order transition to a second-order one. Furthermore, the spin-glass phase appears at Lu concentration x = 0.31. We suppose that the ferromagnetic (FM) and antiferromagnetic (AFM) interactions compete and nearly cancel out each other in CeB2C2, and hence that a biquadratic interaction might cause the first-order magnetic transition at TN. The Lu substitution breaks the competition between AFM and FM interactions and brings forth randomness in interactions acting on each Ce moment. The typical spin-glass behavior of x = 0.31 originates in this random distribution of magnetic interactions.

Original languageEnglish
Pages (from-to)3231-3236
Number of pages6
Journaljournal of the physical society of japan
Volume72
Issue number12
DOIs
Publication statusPublished - 2003 Dec 1

Keywords

  • Biquadratic interaction
  • CeBC
  • Specific heat
  • Spin-glass
  • ac-susceptibility
  • dc-susceptibility

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Tobo, A., Ishimoto, K., Konno, J., Ohoyama, K., Kaneko, K., Yamaguchi, Y., & Onodera, H. (2003). Magnetic properties of tetragonal Ce1-xLuxB 2C2 (0 ≤ x ≤ 0.31) compounds. journal of the physical society of japan, 72(12), 3231-3236. https://doi.org/10.1143/JPSJ.72.3231