期刊信息
- 刊名： 河北师范大学学报（自然科学版）Journal of Hebei Normal University (Natural Science)
- 主办： 河北师范大学
- ISSN： 1000-5854
- CN： 13-1061/N
- 中国科技核心期刊
- 中国期刊方阵入选期刊
- 中国高校优秀科技期刊
- 华北优秀期刊
- 河北省优秀科技期刊
温度对硬磁畴畴壁中垂直布洛赫线间平衡间距的影响
-
1. 承德民族师范高等专科学校 物理系, 河北 承德 067000;
2. 河北师范大学 物理科学与信息工程学院, 河北 石家庄 050016;
3. 邢台学院 物理系, 河北 邢台 054001 -
DOI：
Influence of Temperature on the Equilibrium Separation Between Vertical Bloch Lines in the Walls of Hard Domains
摘要/Abstract
实验研究了温度对外延石榴石磁泡薄膜中三类硬磁畴畴长的影响.研究发现,普通硬磁泡、第Ⅰ类哑铃畴和第Ⅱ类哑铃畴在条泡转变标准场和硬泡标准场处其畴长随温度的升高而增大,由此揭示了三类硬磁畴畴壁中垂直布洛赫线间的平衡间距随温度的升高而变大,纠正了垂直布洛赫线间的平衡间距随温度的升高而变小这一结论.证明了三类硬磁畴的畴壁结构是一致的,在直流偏场下之所以会出现不同的缩灭行为,完全是由垂直布洛赫线的数目引起的.在同一温度下,普通硬磁泡、第Ⅰ类哑铃畴和第Ⅱ类哑铃畴中的垂直布洛赫线数目依次增多.
The length of the hard domains in epitaxial garnet bubble films are measured at various tempera- tures. It is found that the length of the hard domains increaseswith temperature. The results that the equilibrium separation between two neighboring vertical Bloch lines Seq is widened with the increasing temperature, and the domain wall structures of the three kinds of hard domains are the same are found. At the same time, the results can be understood simply that the number of vertical Bloch line increases successively from ordinary hard bubble to dumbbell domain of the first kind and to dumbbell domain of the second kind at the same temperature.