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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


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/61659


    Title: Crystal structures and magnetic properties of the double perovskite (Ca2-2xSr2x)FeMoO6
    Authors: Shi JB;Fan YY;Peng PH;Jou FC;Lee CY;Ku HC;Young SL;Chen HZ
    教師: 李紫原
    Date: 2003
    Publisher: Elsevier
    Relation: PHYSICA B-CONDENSED MATTER,Elsevier,Volume: 329,Pages: 805-806,Part: Part 2,Published: MAY 2003
    Keywords: MAGNETORESISTANCE
    Abstract: 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.
    URI: http://www.elsevier.com/wps/find/homepage.cws_home
    http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/61659
    Appears in Collections:[奈微與材料科技中心] 期刊論文

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