English

应用科学学报 ›› 1995, Vol. 13 ›› Issue (1): 121-126.

• 论文 • 上一篇    

磁性粒子分形聚集体的矫顽力特性

王前, 孙强, 邓昭镜   

  1. 西南师范大学
  • 收稿日期:1992-05-25 修回日期:1992-11-09 出版日期:1995-03-31 发布日期:1995-03-31

THE PROPERTIES OF COERCIVITY OF FRACTAL AGGREGATES FORMED BY MAGNETIC PARTICLES

WANF QIAN, SAUN QIANG, DENG ZHAOJING   

  1. Southwest Normal University
  • Received:1992-05-25 Revised:1992-11-09 Online:1995-03-31 Published:1995-03-31

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摘要： 该文讨论了分维度对单畴粒子分形聚集体矫顽力的影响,利用偶极场近似,导出了聚集体的矫顽力与维度之间的关系式,结果表明矫顽力随分维度的增加而减小.通过对分维度与堆积密度之间关系的讨论,从而证实了作者所得结论的正确性

关键词: 聚集体, 分维度, 矫顽力, 单畴粒子

Abstract: In this paper, the effect of fractal dismension (D) in coercivity (H0) of single-domain particle aggregates is discused. Making use of dpole field approximation,an expression relatng D and H0 is derived,which states that H0 is a deoreasing function of D. By analyzing the relati n between D and packing density (p),it is found that th.obtained conclusion is consistent with the existing theoretical and experimental results.

Key words: aggregate, fractal dimension, coercivity of single-domain particle