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Citation: TIAN Shi-Zhe, ZHAO Jun-Chai, QIAO Cong-De, JI Xiang-Ling, JIANG Bing-Zheng. Preparation and Magnetic Properties of Double Perovskites SrLaMnBO₆(B: Mo,W) by Sol-Gel Route[J]. Chinese Journal of Applied Chemistry, ;2006, 23(9): 945-948. shu

Preparation and Magnetic Properties of Double Perovskites SrLaMnBO₆(B: Mo,W) by Sol-Gel Route

1.
State Key laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022

Corresponding author: TIAN Shi-Zhe,
Received Date: 13 October 2005
Available Online: 31 March 2006
Fund Project: 国家自然科学基金资助项目(90101001) (90101001)中国科学院方向性项目(KJCX2-SW-H07) (KJCX2-SW-H07)"九七三"项目(G1999064800) (G1999064800)吉林省杰出青年基金(20050104) (20050104)吉林省科技厅和长春市科技局国际合作项目(20050702-2,04-03GH₂68) (20050702-2,04-03GH₂68)

The ordered double perovskites SrLaMnBO₆(B: Mo,W) were prepared by sol-gel reaction.The XRD results suggest that the crystal structure of SrLaMnMoO₆ belongs to the monoclinic P2₁/n space group and that of SrLaMnWO₆ belongs to the tetragonal I4/m space group.The competition between band filling effect and steric effect results in the expansion of cell volume for SrLaMnBO₆(B: Mo,W).Magnetic measurements indicated that both samples showed very weak ferro-/ferrimagntism,but the magnetic moments at H=0 extrapolated from the magnetic moment vs applied magnetic field curves are 0.72μ_B and 0.16μ_B for SrLaMnMoO₆ and SrLaMnWO₆,respectively,much smaller than the expected net magnetic moments.From the temperature dependence of magnetization for SrLaMnMoO₆,ferromagnetic-paramagnetic transition is observed,which is not shown for SrLaMnWO₆.
- double perovskite,
- sol-gel,
- doping,
- cell parameters,
- magnetic property
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Preparation and Magnetic Properties of Double Perovskites SrLaMnBO₆(B: Mo,W) by Sol-Gel Route