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    題名: Concentration dependence of the exchange interaction in Pb1-xEuxTe
    作者: Go´rska, M.;Anderson, J. R.;Peng, J. L.;Oka, Y.;Jen, J. Y-;Mogi, I.;Ravot, D.;Golacki, Z.
    貢獻者: 淡江大學物理學系
    日期: 1997-02
    上傳時間: 2013-07-09 15:22:52 (UTC+8)
    出版者: College Park: American Physical Society
    摘要: From low-field measurements of the susceptibility at temperatures up to 385 K, fitted to the Curie-Weiss expression, the exchange constant J/kB of Pb1-xEuxTe has been obtained for different values of x. It has been observed that J/kB decreases with increasing x. Reasons for this decrease are proposed. Measurements of the low-temperature magnetization at fields up to 23 T yield a value of the pair exchange constant Jp/kB, which is somewhat larger than the values from the susceptibility measurements and is nearly independent of x. This result seems to be due to the clustering of Eu atoms.
    關聯: Physical Review B (Condensed Matter) 55(7), pp.4400-4404
    DOI: 10.1103/PhysRevB.55.4400
    顯示於類別:[物理學系暨研究所] 期刊論文


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