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Spiral patterns in magnets
Institution:1. Laboratory of Environmental Medicine and Developmental Toxicology, Shantou University Medical College, Shantou, Guangdong 515041, China;2. Guangdong Provincial Key Laboratory of Infectious Diseases, Shantou University Medical College, Shantou, Guangdong 515041, China;3. School of Environment, Guangzhou Key Laboratory of Environmental Exposure and Health, Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou, Guangdong 510632, China;4. Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong 515041, China
Abstract:An autowave model of the spiral pattern formation in magnets located in a rotating magnetic field is proposed. The model is based on the overdamped double sine-Gordon equation. Nucleation of spiral domains is associated with the averaged motion of domain walls in the rotating field. A vortex-type defect (Bloch line) is the core of the spiral.
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