Local Magnetic Field of a Perovskite Manganite La_<0.7>Ca_<0.3>MnO_3

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The time-differential perturbed angular correlation method with the <SUP>140</SUP>Ce probe was applied to a microscopic investigation on a perovskite manganite, La<SUB>0.7</SUB>Ca<SUB>0.3</SUB>MnO<SUB>3</SUB>. A drastic change was observed in the time evolution of the directional anisotropies around the Curie temperature (T<SUB>c</SUB>∼245K), reflecting the paramagnetic-ferromagnetic phase transition. The internal magnetic field at the probe nucleus stabilized at the A site was estimated to be B<SUB>int</SUB>=6.9±0.3T at 240K, whereas no appreciable magnetic field was observed at 260 K. From a comparative study using two different probe-introduction methods, in addition, we found that ascendant ions of the probe, <SUP>140</SUP>Ba and <SUP>140</SUP>La, can be located at the A site by heat treatment.

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  • Journal of Nuclear and Radiochemical Sciences  

    Journal of Nuclear and Radiochemical Sciences 8(2), 89-92, 2007-12-01 

    The Japan Society of Nuclear and Radiochemical Sciences

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各種コード

  • NII論文ID(NAID)
    10021101966
  • NII書誌ID(NCID)
    AA11948402
  • 本文言語コード
    ENG
  • 資料種別
    REV
  • ISSN
    13454749
  • データ提供元
    CJP書誌  J-STAGE 
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