Real-space phase field investigation of evolving magnetic domains and twin structures in a ferromagnetic shape memory alloy | |
Wu, HH; Ke, YB; Ke YB(柯于斌); Pramanick, A; Wang, XL | |
刊名 | JOURNAL OF APPLIED PHYSICS |
2016 | |
卷号 | 120期号:18 |
DOI | 10.1063/1.4967531 |
英文摘要 | A real-space phase field model combining Landau-Lifshitz-Gilbert equation and time-dependent Ginzburg-Landau equation is developed to investigate the evolution of ferromagnetic domains and martensitic twin structures in a ferromagnetic shape memory alloy at different lengthscales. Both domain and twin structures are obtained by simultaneously solving for minimization of magnetic, elastic, and magnetoelastic coupling energy terms via a nonlinear finite element method. The model is applied to simulate magneto-structural evolution within a nanoparticle and a bulk single-crystal of the alloy Ni2MnGa, which are subjected to mechanical strains. It is shown that a nanoparticle contains magnetic vortex structures within a single twin variant, whereas for a bulk crystal both 90 degrees and 180 degrees domain structures are present within multiple twin variants. Published by AIP Publishing. |
学科主题 | Physics |
语种 | 英语 |
WOS记录号 | WOS:000388734700012 |
内容类型 | 期刊论文 |
源URL | [http://ir.ihep.ac.cn/handle/311005/260207] |
专题 | 高能物理研究所_东莞分部 |
作者单位 | 中国科学院高能物理研究所 |
推荐引用方式 GB/T 7714 | Wu, HH,Ke, YB,Ke YB,et al. Real-space phase field investigation of evolving magnetic domains and twin structures in a ferromagnetic shape memory alloy[J]. JOURNAL OF APPLIED PHYSICS,2016,120(18). |
APA | Wu, HH,Ke, YB,柯于斌,Pramanick, A,&Wang, XL.(2016).Real-space phase field investigation of evolving magnetic domains and twin structures in a ferromagnetic shape memory alloy.JOURNAL OF APPLIED PHYSICS,120(18). |
MLA | Wu, HH,et al."Real-space phase field investigation of evolving magnetic domains and twin structures in a ferromagnetic shape memory alloy".JOURNAL OF APPLIED PHYSICS 120.18(2016). |
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