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金属学报  1997, Vol. 33 Issue (9): 981-986    
  论文 本期目录 | 过刊浏览 |
关于铁磁性物质的自发磁化
王永忠;张志东;曾德长;阳宗全;汤洪;乔桂文
中国科学院金属研究所;沈阳;110015;中国科学院金属研究所;沈阳;110015;中国科学院金属研究所;沈阳;110015;中国科学院金属研究所;沈阳;110015;中国科学院金属研究所;沈阳;110015;中国科学院金属研究所;沈阳;110015
SPONTANEOUS MAGNETIZATION OF FERROMAGNET
WANG Yongzhong;ZHANG Zhidong;ZENG Dechang;YANG Zongquan;TANG Hong;QIAO Guiwen (Institute of Metal Research; Chinese Academy of Sciences;Shenyang 110015)
引用本文:

王永忠;张志东;曾德长;阳宗全;汤洪;乔桂文. 关于铁磁性物质的自发磁化[J]. 金属学报, 1997, 33(9): 981-986.
, , , , , . SPONTANEOUS MAGNETIZATION OF FERROMAGNET[J]. Acta Metall Sin, 1997, 33(9): 981-986.

全文: PDF(432 KB)  
摘要: 本文在铁磁性物质现有自发磁化理论模型的基础上提出,在自发磁化过程中除了电子之间的交换作用能以外,还存在一项影响自发磁化的能量─—无序能在分子场模型的框架内,引入一个作为热运动能、交换能和无序能的函数的有效分子场系数λ(T).使用人对计算出来的铁磁性物质在铁磁状态下自发磁化强度与温度的关系和在顺磁状态下磁化率与温度的关系,与Ni的实验结果符合得很好
关键词 自发磁化交换作用能无序能    
Abstract:By introducing disordering energy Ed, an effective molecular field coefficient λ(T)as a function of thermal energy, the exchange interaction energy and disordering energy is proposed to intefpret spontaneous magnetization of ferromagnetic materials. Usingλ(T),the relationships betweem Tc, θp, and Ed / k and the relationships of (ρ/X)-T and (Ms,/M0)-(T/Tc)were derived. The results show that the curves of (ρ/X)-T and (Ms /M0)-(T/Tc)fit the experimental curves of Ni very well.
Key wordsspontaneous magnetization    exchange energy    disorder energy
收稿日期: 1997-09-18     
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