NMR Study of ^<59>Co and ^<11>B in RECo_4B_4 (RE=Gd,Tb,Dy,Ho,Er and Tm)
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概要
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Pulsed NMR studies of "Co and "B have been performed in a series of anti-ferromagnetic RECo.B. compounds (RE=Gd, Tb, Ho, Er, Tm) in both para-magnetic and magnetically ordered states. In the paramagnetic state, NMRsignals of both "Co and "B were observed only in GdCo.B. in the temperaturerange of 77 -300 K. From the isotropic Knight shift measurement, we obtained theconduction electron spin polarization at both Co and B sites generated by the d-fexchange interaction on the rare earth site. The electron spin polarization estimatedin RECo.B. is about twice as large as th'at in RERh.B. system. In the antiferro-magnetic state, zero-field resonances of "Co and "B were observed for GdCo.B.,TbCo.B. and DyCo.B. at 1.3 K. From the hyperfine fields and NMR spectra,the spin structure is shown to be the same type as in the antiferromagnetic super-conductor Ho(Rh..3Irg.7)3B,(.
- 社団法人日本物理学会の論文
- 1984-08-15
著者
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KITAOKA Yoshio
Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka Universit
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KOHORI Yoh
Department of Physics, Chiba University
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Asayama Kunisuke
Department of Material Physics, Faculty of Engineering Science, Osaka University
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KOHARA Takao
College of Liberal Arts, Kobe University
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Takao Kohara
Department Of Material Science Faculty Of Science Himeji Institute Of Technology
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Kohori Yoh
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Asayama Kunisuke
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Ueda K
Toyota Technological Inst. Nagoya Jpn
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Kohori Y
Chiba Univ. Chiba
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Ku Huan-chiu
Department Of Physics National Tsing Hua University
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Kitaoka Yoshio
Department Of Material Physics Faculty Of Engineering Science Osaka University
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KUMAGAI Ken-ichi
Department of Physics,Faculty of Science,Hokkaido University
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UEDA Koh-ichi
Division of Science of Materials,Graduate School of Science and Technology,Kobe University
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ACKER F.
Institut de Physique Experimentale,Universite de Lausanne
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Kohara Takao
College Of Liberal Arts Kobe University
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Acker F.
Institut De Physique Experimentale Universite De Lausanne
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Kumagai Ken-ichi
Department Of Chemistry College Of Science And Engineering Aoyama Gakuin University
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Kumagai Ken-ichi
Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University
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