Effect of cation disorder on the magnetic properties of Sr2Fe1- xGaxReO6 (0
Effect of cation disorder on the magnetic properties of Sr2Fe1- xGaxReO6 (0
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DOI：
10.1103/physrevb.75.184409
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发表时间：
2007-05
影响因子：
3.7
通讯作者：
Alexandra Jung;I. Bonn;V. Ksenofontov;M. Panthöfer;S. Reiman;C. Felser;W. Tremel
中科院分区：
文献类型：
--
作者：
Alexandra Jung;I. Bonn;V. Ksenofontov;M. Panthöfer;S. Reiman;C. Felser;W. Tremel
用X射线结构分析方法研究了Fe亚晶格的抗磁稀释对双钙钛矿结构Sr{sub 2}Fe{sub 1-x}Ga{sub x}ReO{sub 6}（0 =} 0. 4）的结构和磁性的影响，并在相应的穆斯堡尔谱中观察到了磁有序相和顺磁相. Ga含量低于20%时，Ga对-Fe-O-Re-O-Fe-双交换通道有统计稀释作用。相分离开始于20%Ga取代;在20%和40%的Ga含量之间，顺磁性Ga基相不包含任何Fe。含铁，顺磁性立方相，可以检测到穆斯堡尔谱首先出现x=0.4。«少
The effect of diamagnetic dilution of the Fe sublattice on the structural and magnetic properties of the double perovskite Sr{sub 2}Fe{sub 1-x}Ga{sub x}ReO{sub 6} (0 =}0.4 is detected by x-ray structural analysis accompanied by the observation of a magnetically ordered and a paramagnetic phase in the corresponding Moessbauer spectra. Below 20% Ga content, Ga statistically dilutes the -Fe-O-Re-O-Fe- double-exchange pathways. Phase separation begins at 20% Ga substitution; between 20% and 40% ofmore » Ga content, the paramagnetic Ga-based phase does not contain any Fe. The Fe-containing, paramagnetic cubic phases which can be detected by Moessbauer spectroscopy first appear for x=0.4.« less