Anomalous Antiferromagnetic Properties of the Tetragonal Compound, TbB_2C_2

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Abstract

Magnetic properties of the tetragonal compound TbB<FONT SIZE="-1"><SUB>2</SUB></FONT>C<FONT SIZE="-1"><SUB>2</SUB></FONT> were investigated by means of specific heat, magnetization and neutron diffraction measurements. TbB<FONT SIZE="-1"><SUB>2</SUB></FONT>C<FONT SIZE="-1"><SUB>2</SUB></FONT> is an antiferromagnet with T<FONT SIZE="-1"><SUB>N</SUB></FONT> = 21.7 K. However, the magnetic susceptibility exhibits no cusp-like anomaly but shows an increase below T<FONT SIZE="-1"><SUB>N</SUB></FONT>. In the ground state, the magnetic moments of Tb lie in the basal c-plane and the magnetic structure can be described with the propagation vectors of the dominant component of k=[0 1 1/2] with the weak components of k<FONT SIZE="-1"><SUP>′</SUP></FONT>=[0 0 1/2]. In addition, there also exists a weak longitudinal sinusoidal moment-modulation type component which is represented by k<FONT SIZE="-1"><SUB>L</SUB></FONT>=[1± δ ± δ 0], where δ=0.13. Although the fundamental magnetic correlation in RB<FONT SIZE="-1"><SUB>2</SUB></FONT>C<FONT SIZE="-1"><SUB>2</SUB></FONT> is [1 0 0]-type, the dominant component in the ground state of TbB<FONT SIZE="-1"><SUB>2</SUB></FONT>C<FONT SIZE="-1"><SUB>2</SUB></FONT> is k=[0 1 1/2]-type.

Journal

  • Journal of the Physical Society of Japan

    Journal of the Physical Society of Japan 70(10), 3112-3118, 2001-10-15

    THE PHYSICAL SOCIETY OF JAPAN

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Codes

  • NII Article ID (NAID)
    10009122624
  • NII NACSIS-CAT ID (NCID)
    AA00704814
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    00319015
  • NDL Article ID
    5948931
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z53-A404
  • Data Source
    CJP  NDL  J-STAGE 
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