Possible Antiferro-Octupolar Order in Antiferromagnetic TbB_2C_2 Examined by Gd Substitution

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Author(s)

Abstract

We have examined the effects of Gd substitution on the anomalous antiferromagnetic (AFM) properties of TbB<SUB>2</SUB>C<SUB>2</SUB> having field-induced antiferro-quadrupolar (AFQ) ordered phases. The Gd substitution induces drastic changes in the magnetic properties. The AFM structure characteristic to TbB<SUB>2</SUB>C<SUB>2</SUB>, the anomalous increase in magnetic susceptibility below <I>T</I><SUB>N</SUB>, and the strong preference of AFM domains disappear with the substitution of low Gd content of less than 10%. We propose a promising assumption that an antiferro-octupolar (AFO) ordering occurs at <I>T</I><SUB>N</SUB> simultaneously with AFM ordering in TbB<SUB>2</SUB>C<SUB>2</SUB>. The fragility of anomalous properties originates in the fragility of the antiferro-octupolar interaction against the substitution of Gd<SUP>3+</SUP> ions with <I>L</I>=0.

Journal

  • Journal of the Physical Society of Japan

    Journal of the Physical Society of Japan 75(12), "123707-1"-"123707-5", 2006-12-15

    The Physical Society of Japan (JPS)

References:  45

Codes

  • NII Article ID (NAID)
    110005716676
  • NII NACSIS-CAT ID (NCID)
    AA00704814
  • Text Lang
    ENG
  • Article Type
    SHO
  • ISSN
    00319015
  • NDL Article ID
    8572880
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z53-A404
  • Data Source
    CJP  NDL  NII-ELS  J-STAGE 
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