采用交换相互作用的分子场理论模型对金属间化合物DyMn6Sn6的自旋重取向相变进行了研究.从理论上计算了DyMn6Sn6的易磁化方向以及Dy和Mn离子磁矩与c轴夹角随温度的变化.基于单离子模型计算了Dy离子的一阶和二阶磁晶各向异性常数K 1R和K 2R随温度的变化.研究表明,为了很好的描述该化合物的自旋重取向相变,必须考虑Dy离子的四阶晶场项及相应的二阶磁晶各向异性常数K 2R、K 2R与K 1R和Mn离子磁各向异性常数K1t之间的相互竞争是导致DyMn6Sn6自旋重取向相变的重要因素.
参考文献
[1] | Venturini G;El Idrissi B C;Malaman B .[J].Journal of Magnetism and Magnetic Materials,1991,94:35. |
[2] | Malaman B.;Welter R.;Sanchez J.P.;Vulliet P.;Ressouche E.;Venturini G. .Magnetic properties of RMn6Sn6 (R = Gd-Er) compounds from neutron diffraction and Mossbauer measurements[J].Journal of Magnetism and Magnetic Materials,1999(2/3):519-534. |
[3] | Clatterbuck D.M.;Gschneidner K.A. Jr. .Magnetic properties of RMn6Sn6 (R = Tb, Ho, Er, Tm, Lu) single crystals[J].Journal of Magnetism and Magnetic Materials,1999(1/3):78-94. |
[4] | Schobinger-Papamantellos P.;Rodriguez-Carvajal J.;Duijn HGM. Buschow KHJ.;Andre G. .Magnetic ordering in TbMn6-xCrxSn6 (x=1, 2) compounds studied by neutron diffraction and magnetic measurements[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2000(1/2):47-55. |
[5] | Lefèver C;Venturini G .[J].Journal of Magnetism and Magnetic Materials,2004,268:374. |
[6] | Schobinger-Papamantellos P.;Rodriguez-Carvajal J.;Duijn HGM. Buschow KHJ.;Andre G. .Magnetic ordering in DyMn6-xCrxSn6 (x=1,2) compounds studied by neutron diffraction and magnetic measurements[J].Journal of Magnetism and Magnetic Materials,2000(1):22-32. |
[7] | Wang R W;Zhang L G;Zhang S Y et al.[J].Journal of Physics D:Applied Physics,2004,37:385. |
[8] | 李云宝,张绍英,姚金雷,张立刚,沈保根.Magnetic properties and magnetoresistance effect of Y1-xGdxMn6Sn6 (x=0-1) compounds[J].中国物理(英文版),2003(03):328-331. |
[9] | 郭光华,张海贝.化合物HoMn6Sn6的磁晶各向异性及自旋重取向相变研究[J].物理学报,2005(12):5879-5883. |
[10] | 郭光华,张海贝.化合物TbMn6Sn6的磁性和磁相变[J].中国有色金属学报,2005(10):1489-1492. |
[11] | 赵鹏,张绍英,成昭华,沈保根.Magnetic properties of TbMn6Sn6-xGax (x=0.0-1.2) compounds[J].中国物理(英文版),2002(09):955-959. |
[12] | 张立刚,汪汝武,李路,张绍英,姚金雷,沈保根.Magnetic properties and magnetoresistance of HfFe6Ge6-type Dy1-xGdxMn6Ge6 (x=0.1-0.6) compounds[J].中国物理(英文版),2003(05):562-565. |
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%