Magnetic Properties of Tetragonal Ce_<1-x>Lu_xB_2C_2 (0≦x≦0.31) Compounds

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Author(s)

Abstract

Specific heat, dc- and ac-magnetic susceptibility and magnetization measurements were performed on rare earth intermetallic compounds Ce_<1-x>Lu_xB_2C_2 (0 ≤ x ≤ 0.31) in order to elucidate the magnetic interaction in CeB_2C_2. In the process of the substitution of Ce by Lu in CeB_2C_2, 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 CeB_2C_2, and hence that a biquadratic interaction might cause the first-order magnetic transition at T_N. 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.

Journal

  • Journal of the Physical Society of Japan

    Journal of the Physical Society of Japan 72(12), 3231-3236, 2003-12-15

    The Physical Society of Japan (JPS)

References:  26

Codes

  • NII Article ID (NAID)
    110001954371
  • NII NACSIS-CAT ID (NCID)
    AA00704814
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    00319015
  • NDL Article ID
    6789543
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z53-A404
  • Data Source
    CJP  NDL  NII-ELS 
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