| 离子取代对La2CuO4的结构和磁学性质的影响 |
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| 引用本文： | 曹学强,曾跃,王鸿燕,苏锵.离子取代对La2CuO4的结构和磁学性质的影响[J].湖南师范大学自然科学学报,2001,24(1):31-38. |
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| 作者姓名： | 曹学强 曾跃 王鸿燕 苏锵 |
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| 作者单位： | 1. 湖南师范大学化学系,
2. 中国科学院长春应用化学研究所, |
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| 基金项目： | This research is
supported by Hunan Natural Science Foundation（53122-465） |
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| 摘 要： | La
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| 关 键 词： | 反铁磁性 铜酸镧 结构 离子取代 有效磁矩 Ned态 电子自旋共振 |
| 文章编号： | 1000-2537(2001)01-0031-08 |
| 修稿时间： | 2000年9月6日 |
Effect of Ionic Substitutions on the Structure and Magnetic Property of La2CuO4 |
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| CAO Xue-qiang.Effect of Ionic Substitutions on the Structure and Magnetic Property of La2CuO4[J].Journal of Natural Science of Hunan Normal University,2001,24(1):31-38. |
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| Authors: | CAO Xue-qiang |
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| Abstract: | La2CuO4 is antiferromagnetic due to the existence of…Cu—O—Cu—O—Cu… chainlike structure whose bond angle is 180°.The substitution of Cu2+by Zn2+or Mg2+ frustrates this long-range ordering and raises the effective magnetic moment of Cu2+,and the Néel state can not be observed in a temperature range of 77～300K.La2Cu1-xNixO4 is ESR-silent and its Néel state can not be observed either.La2Cu1-xMxO4(M=Zn2+, Mg2+)give ESR signals which are supposed to be induced by the elongated CuO6 octahedron. Samples were characterized by conventional physical techniques such as X-ray diffraction(XRD),electron spin resonance(ESR)and so on. |
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| Keywords: | La2CuO4 |
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