Effect of Quench Treatment on Fe/Mo Order and Magnetic Properties of Double Perovskite Sr$_{2}$FeMoO$_{6}$
Yan-Chun Hu1,2** , Ya-Wen Cui1,2 , Xian-Wei Wang1,2 , Yi-Pu Liu1,2
1 College of Physics and Electronic Engineering, Henan Normal University, Xinxiang 4530072 Henan Province Key Laboratory of Photovoltaic Materials, Xinxiang 453007
Abstract ：A quench-treatment technique is used to prepare a high-quality polycrystalline sample of double perovskite Sr$_{2}$FeMoO$_{6}$ (SFMO). X-ray powder diffraction analysis reveals that the sample has a single phase and exhibits I4/m symmetry. The cation order $\eta$ of the sample increases to 98.9(2)% from 94.2(3)%, which is prepared by the traditional sol-gel method. The initial magnetization isotherm of the sample is detected at 300 K. Unit-cell magnetization for the current sample is 1.332 $\mu_{\rm B}$ at 300 K, and the one for the traditional sol-gel method sample is 0.946 $\mu_{\rm B}$. Unit-cell magnetization is enhanced to 40.80% by the quench-treatment technique. Quench treatment is an effective method of enhancing the Fe/Mo order and magnetic properties of double perovskite SFMO.
收稿日期: 2015-08-19
出版日期: 2016-02-26
:
61.05.cp
(X-ray diffraction)
61.50.-f
(Structure of bulk crystals)
85.70.Li
(Other magnetic recording and storage devices (including tapes, disks, And drums))
85.80.Jm
(Magnetoelectric devices)
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2016, Vol. 33 
