[1]祁烁,成泰民,王丽芝.亚铁磁性物质的有序无序竞争[J].南京师大学报(自然科学版),2011,34(03):54-57.
　Qi Shuo,Cheng Taimin,Wang Lizhi.Competition of Order-Disorder in Ferrimagnetic Materials[J].Journal of Nanjing Normal University(Natural Science Edition),2011,34(03):54-57.
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亚铁磁性物质的有序无序竞争()
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《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

卷:
第34卷
期数:
2011年03期
页码:
54-57
栏目:
物理学
出版日期:
2011-09-20

文章信息/Info

Title:
Competition of Order-Disorder in Ferrimagnetic Materials
作者:
祁烁1; 成泰民1; 2; 王丽芝1
1． 沈阳化工大学数理系，2 ． 沈阳化工大学材料科学与工程学院，辽宁沈阳110142
Author(s):
Qi Shuo1; Cheng Taimin1; 2; Wang Lizhi1
1.Department of Mathematics and Physics,Shenyang University of Chemical Technology, 2.School of Material Science and Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China
关键词:
有序能; 热无序能; 冷无序能; 自发磁化理论; 亚铁磁性物质
Keywords:
order energy; thermal disorder energy; cold disorder energy; spontaneous magnetization theory; ferrimagnetic materials
分类号:
O482.524
摘要:
在亚铁磁性物质的自发磁化理论模型的基础上引入冷无序能,建立了有序能、热无序能、冷无序能之间竞争的物理模型.对于材料的亚铁磁性,引入冷无序能后,从理论上得到了与奈尔磁相变温度TN相相关的能量kBTN与有序能Eorder的比值变化,以及冷无序能Ed与有序能的比值Ed/Eorder的变化规律.当与顺磁居里温度相关的能量kBθP远大于有序能Eorder时,就会容易出现亚铁磁性物质的有序、无序之间的竞争.κNθ=Eorder/kBθP越小,在kBTN/Eorder大的区域有序无序的竞争更加明显.
Abstract:
On the basis of spontaneous magnetization theory in the ferrimagnetic material，we introduced cold disorder energy and built the system with competition of order energy，thermal disorder energy，and cold disorder energy． For ferrimagnetic materials，by the introduction of cold disorder energy，we obtain magnetic phase transition Néel temperature TN of the ferrimagnetic material， the ratio of related energy kBTN and the order energy Eorder ， the ratio of the cold disorder Ed and order energy Ed Eorder ． Thus we found that when paramagnetic Curie temperature related kBθp is much greater than the order energy Eorder ，it will easily lead to the competition between the ordering and disordering in ferrimagnetic materials． As κNθ = Eorder kBθP gets smaller，in region with large kBTN Eorder ，competition between order and disorder becomes more pronounced．

参考文献/References:

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［4］ 王永忠，张志东． 关于铁磁性物质的自发磁化［J］． 金属学报，1997，33( 9) : 981-986．
［5］ 王永忠，张志东． 磁性物质中冷无序能的作用［J］． 物理学报，2002，52( 2) : 410-414．
［6］ 王永忠． 磁性物质交换Hamiltonian 中两项的竞争［J］． 物理学报，2005，54( 9) : 4 354-4 358．
［7］ Wang Yongzhong，Zhang Zhidong． Competition of two terms in exchange energy for magnetic materials［J］． Solid State Communications， 2002，124: 215-219．

备注/Memo

备注/Memo:
基金项目:国家自然科学基金( 10647138) 、辽宁省教育厅科学研究项目( 20060667) ．通讯联系人:成泰民，博士，副教授，研究方向: 理论物理及磁性材料物理． E-mail: Ctm701212@126． Com
更新日期/Last Update: 2011-09-15