利用X射线衍射及磁测量手段研究了Y2Al3Fe14-xMnx系列化合物的结构.结果表明,该系列化合物具有Th2Ni17型结构;随着x的增加,化合物的单胞体积呈现非线性的变化,这表明在化合物的磁相变点附近存在较大的正的本征磁致伸缩.对Y2Al3Fe11Mn3化合物进行的变温X射线衍射研究表明,该化合物在其居里点附近(185～200 K)具有负热膨胀性质,其热膨胀系数为-7.5×10-5/K.
参考文献
| [1] | J.S.O.Evans, Z.Hu, J.D.Jorgensen, D.N.Argyyiou, S.Short. A.W.Sleight, Science, 275, 61(1997) |
| [2] | T.A.Mary, J.S.O.Evans, T.Vogt, A.W.Sleight, Science, 272, 90(1996) |
| [3] | J.S.O.Evans, T.A.Mary, A.W.Sleight, J. Solid State Chem., 133, 580(1997) |
| [4] | D.K.Seo, M.H.Whangbo, J.Solid State Chem., 129, 160(1997) |
| [5] | N.Khosrovani, V.Korthuis, A.W.Sleight, Inorg. Chem., 35, 485(1996) |
| [6] | XING Xianran(邢献然),in Proceeding of the 10th National Symposium on Phase Diagram《第十届全国相图会议论文集》,edited by committee on Phase Diagrams of Chinese Physical Society and Anhui Normal University (Wuhu, Anhui Normal University Press, 2000) p.166 |
| [7] | K.Lagarec, D.G.Rancourt, Physical Review B, 62, 978(2000) |
| [8] | Hao Yan-Ming, Li Yan-Xian, Sun He-Xue, Qu Jing-Pin, Wang Bo-Wen, Chin. Phys. Lett., 18, 601(2001) |
| [9] | Yin-gang Wang, Fuming Yang, Changpin Chen, N.Tang, Pinghua Lin, Qidong Wang, J.Appl. Phys., 84,6113(1998) |
| [10] | E.Gratz, R.Hauser, A.Lindbaum, M.Maikis, R.Resel, G.Schaudy, R.Z.Levitin, A.S.Markosyan, I.S.Dubenko,A.Yu Sokolov, S.W.Zochowski, J.Phys: Condens. Matter, 7, 597(1995) |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%