FORMATION OF MULTI-BRANCHED DOMAINS IN GARNET BUBBLE FILMS BY LOW-BIAS-PULSE METHOD
HAN BAO-SHAN (韩宝善)a, MENG GUANG-QING (孟广庆)a, GUO GE-XIN (郭革新)b
a State Key Laboratory of Magnetism, Institute of Physics, Academia Sinica, Beijing 100080, China; b Department of Physics, Hebei Teachers University, Shijiazhuang 050016. China
Abstract The formation of multi-branched domains( MBDs) at low static bias field was first studied. With multiple branches, MBDs contain more or less same-signed vertical-Bloch-lines (VBLs) in their walls, Experiments. on four samples have shown that under certain conditions, the amount and hardness of the MBDs formed can be easily controlled, and so-called "low-bias-field method" is another effective way to form VBL chains. It was found that MBDs are formed due to the expansion of domain segments after compressed by a rectangular bias pulse. The number of VBLs nucleated in domain walls is affected by the space where the domains expand rapidly.
Received: 18 December 1996
Accepted manuscript online:
PACS:
75.70.Kw
(Domain structure (including magnetic bubbles and vortices))
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