ESR Study of Hyperfine Coupling Constants of Eu^<2+> in Alkaline Earth Chalcogenides : Transferred Hyperfine Field in Eu-Chalcogenides
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概要
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The hyperfine (hf) fields at isolated Eu^<2+> ions in alkaline earth chalconegides are measured by ESR method to make a separation between the core polarization and transferred contributions to the hf field at the Eu nucleus in Eu-chalcogenides. The Eu hf fields, which are assumed to be equal to the core polarization fields in Eu-chalcogenides, are (-)299, (-)300, (-)292 and (-)283 kOe in SrO, SrS, SrSe and SrTe, respectively. Using NMR data, the transferred hf fields at Eu nuclei are estimated as -8, -32, -38 and -30 kOe in the ferromagnetic states of EuO, EuS, EuSe and EuTe, respectively. The variation of the transferred hf field from EuO to EuTe is correlated to the exchange mechanism involving 5d and 6s electron states.
- 社団法人日本物理学会の論文
- 1976-05-15
著者
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HIHARA Tadamiki
Faculty of Integrated Arts and Sciences, Hiroshima University
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Kojima Kenichi
Department Of Physics Faculty Of Sciences Tohoku University:faculty Of Integrated Arts And Sciences
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Hihara Tadamiki
Department Of Physics Faculty Of Science Tohoku University:(present Address) Faculty Of Integrated A
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Hihara Tadamiki
Department Of Physics And Department Of Electrical Engineering Tohoku University
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Koi Yoshitaka
Department Of Physics And Department Of Electrical Engineering Tohoku University
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KOMARU Takeshi
Department of Physics, Faculty of Science, Tohoku University
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Kojima Kenichi
Department Of Physics Faculty Of Science Tohoku University
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Kojima Kenichi
Department Of Hematology Ogikubo Hospital
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Komaru Takeshi
Department Of Physics Faculty Of Science Tohoku University:(present Address) Musashino Works Hitachi
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Koi Yoshitaka
Department of Physics, Faculty of Science, Tohoku University
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