National Tsing Hua University Institutional Repository:Crystal structures and magnetic properties of the double perovskite (Ca2-2xSr2x)FeMoO6
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    National Tsing Hua University Institutional Repository > 研究中心 > 奈微與材料科技中心 > 期刊論文 >  Crystal structures and magnetic properties of the double perovskite (Ca2-2xSr2x)FeMoO6


    题名: Crystal structures and magnetic properties of the double perovskite (Ca2-2xSr2x)FeMoO6
    作者: Shi JB;Fan YY;Peng PH;Jou FC;Lee CY;Ku HC;Young SL;Chen HZ
    教師: 李紫原
    日期: 2003
    出版者: Elsevier
    關聯: PHYSICA B-CONDENSED MATTER,Elsevier,Volume: 329,Pages: 805-806,Part: Part 2,Published: MAY 2003
    摘要: Chemical size effect on structural and magnetic properties in (Ca2-2xSr2x)FeMoO6 has been examined. The compounds crystallize in the monoclinic system for 0.0less than or equal tox<0.2, the orthorhombic for 0.2less than or equal tox<0.4 and the tetragonal for 0.4less than or equal tox. The Curie temperature T-C increases with increasing x from 318 K (x = 0.0) to 393 K (x = 1.0). At 82 K, the saturation magnetization of all samples remains M(S)less than or equal to3.5mu(B)/formula unit compared to a theoretical spin-only moment 4mu(B)/formula unit for a perfectly ordered compound. This discrepancy is probably due to a slight disorder and valence-fluctuation between the Fe and Mo atoms.
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