摘要
实验研究了第二类哑铃畴在直流偏场和面内场联合作用下的自发收缩现象,发现第二类哑铃畴的自发收缩不仅与面内场的大小有关,而且还与第二类哑铃畴在面内场中所处方向有关.采用照相法形象地揭示出:当第二类哑铃畴与面内场垂直时最容易发生自发收缩;当第二类哑铃畴与面内场平行时最难发生自发收缩.
Abstract ? Spontaneous shrinking of the second type of dumbbell domains (ⅡD) subjected to both static bias field ( H b) and in plane field ( H ip ) were investigated experimentally.It was found that this phenomenon depends on the amplitude,as well as the direction of H ip .In terms of a series of photographs,it was shown that the spontaneous shrinking of those ⅡDs perpendicular to H ip occurs earlier,and the spontaneous shrinking of those ⅡDs parallel to H ip occurs later.In addition,it was confirmed that ⅡDs lose a part of vertical Bloch lines (VBLs) in their walls in the process of spontaneous shrinking.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1998年第5期824-828,共5页
Acta Physica Sinica
基金
国家自然科学基金
河北省自然科学基金