| 双钙钛矿型Sr_2Fe_xMo_(2-x)O_6系列氧化物的Mssbauer谱研究 |
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| 引用本文： | 罗志.双钙钛矿型Sr_2Fe_xMo_(2-x)O_6系列氧化物的Mssbauer谱研究[J].汕头大学学报(自然科学版),2004(3). |
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| 作者姓名： | 罗志 |
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| 作者单位： | 中国科学院物理研究所磁学国家重点实验室 北京100080，汕头大学物理系，汕头515063 |
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| 摘 要： | 通过M ssbauer谱对Sr2 FexMo2 -xO6 系列氧化物进行研究 ,结果表明该系列氧化物在室温下仍然存在磁有序 ,而且样品中Fe的化合价随着Fe含量x的增加而升高 ,当x =1 0时Fe的化合价处于 + 2与 + 3之间 ,从而验证了能带计算的结果 .
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| 关 键 词： | Sr2FexMo2-xO6 Mssbauer谱 化合价 磁电阻 |
Mssbauer Study of Double Perovskite Sr_2Fe_xMo_(2-x)O_6 Compounds |
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| Luo Zhi.Mssbauer Study of Double Perovskite Sr_2Fe_xMo_(2-x)O_6 Compounds[J].Journal of Shantou University(Natural Science Edition),2004(3). |
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| Authors: | Luo Zhi |
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| Institution: | Luo Zhi 1,2 |
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| Abstract: | Since the magnetoresistance of Sr 2Fe xMo 2-x O 6 originates from the spin scattering of electron,it is very important to study the electronic structure of Sr 2FeMoO 6.Mssbauer study of Sr 2Fe xMo 2-x O 6(1 0≤x≤1 5)shows that there is still magnetic order at room temperature.The valence of Feincreases with it's content in the sample.The valence of Fe in Sr 2FeMoO 6 is between +2 and +3,which is consistent with the half-mental nature of Sr 2FeMoO 6. |
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| Keywords: | Sr 2Fe xMo 2-x O 6 Mssbauer spectroscopy valence magnetoresistance |
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