https://scholars.lib.ntu.edu.tw/handle/123456789/481928
標題: | Effects of B′-site transition metal on the properties of double perovskites Sr2FeMO6 (M = Mo, W): B′ 4d-5d system | 作者: | Chan, T. S. Hu, S. F. Lin, J. G. Chen, J. M. GUANG-YU GUO RU-SHI LIU CHING-RAY CHANG |
關鍵字: | A. Magnetically ordered materials; D. Magnetoresistance; E. X-ray spectroscopies | 公開日期: | 2005 | 卷: | 133 | 期: | 4 | 起(迄)頁: | 265-270 | 來源出版物: | Solid State Communications | 摘要: | The crystal structure, magnetic and magnetotransport properties of the variation of B′-site transition metal in S2FeMO6 (M=Mo, W) with double perovskites structure have been investigated systematically. Measurements of magnetization vs. temperature at H=5T show that Sr2FeMoO6 is a ferromagnet and Sr2FeWO 6 is an antiferromagnet with TN∼35 K. Additionally, the large magnetoresistance ratio (MR) of ∼22% (H=3 T) at room temperature (RT) was observed in the Sr2FeWO6 compound. However, the Sr2FeMoO6 compound did not show any significant MR even at high fields and RT (MR∼ 1%; H=3 T and 300 K). The implications of these findings are supported by band structure calculations to explain the interaction between the 4d(Mo) and 5d(W) orbitals of transition metal ions and oxygen ions. © 2004 Elsevier Ltd. All rights reserved. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/481928 http://www.scopus.com/inward/record.url?eid=2-s2.0-10844287835&partnerID=MN8TOARS |
ISSN: | 00381098 | DOI: | 10.1016/j.ssc.2004.10.033 | SDG/關鍵字: | Crystal structure; Magnetization; Magnetoresistance; Oxygen; Perovskite; Transition metals; X ray spectroscopy; Magnetically ordered materials; Magnetotransport properties; Rare-earth ions; Strontium compounds |
顯示於: | 凝態科學研究中心 |
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