Magnetization Process and the Associated Lattice Deformations in an Intermetallic Compound Gd_5Ge_3

Search this Article

Author(s)

Abstract

The results of magnetization and synchrotron X-ray diffraction measurements on Gd_5Ge_3 subject to a pulsed high magnetic field are reported. When the magnetic field, H, is applied parallel to the a-axis, a sudden increase in magnetization, M, has been observed at 〜3.8 T. For H ‖ c, M increases monotonically with H. The magnetization becomes saturated above about 30T for the two orientations. The lattice constant, a elongates, while c shrinks with increasing H. We calculate the exchange energy under applied magnetic fields based on the proposed magnetic structure assuming an antiferromagnetic exchange interaction in the a-a plane and a ferromagnetic one along the c-axis. We are successful in explaining the opposing behavior of the lattice deformations. Our calculation shows that the change in the lattice constants is proportional to M^2, in agreement with the observation.

Journal

  • Journal of the Physical Society of Japan

    Journal of the Physical Society of Japan 77(5), "53711-1"-"53711-4", 2008-05-15

    The Physical Society of Japan (JPS)

References:  17

Codes

  • NII Article ID (NAID)
    110006665988
  • NII NACSIS-CAT ID (NCID)
    AA00704814
  • Text Lang
    ENG
  • Article Type
    SHO
  • ISSN
    00319015
  • NDL Article ID
    9489067
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z53-A404
  • Data Source
    CJP  NDL  NII-ELS 
Page Top