Domain stability and polar-vortex transformations controlled by mechanical loads in soft ferromagnetic nanodots | Zendy

Qiang Sheng | Zendy; Xiangli Liu | Zendy; Weijin Chen | Zendy; Weiming Xiong | Zendy; Gelei Jiang | Zendy; Yue Zheng | Zendy

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Domain stability and polar-vortex transformations controlled by mechanical loads in soft ferromagnetic nanodots

Author(s) -

Qiang Sheng,

Xiangli Liu,

Weijin Chen,

Weiming Xiong,

Gelei Jiang,

Yue Zheng

Publication year - 2016

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4943507

Subject(s) - nanodot , vortex , condensed matter physics , ferromagnetism , phase diagram , polar , polar vortex , materials science , phase (matter) , domain (mathematical analysis) , vortex state , stability (learning theory) , phase transition , physics , nanotechnology , mechanics , mathematics , computer science , mathematical analysis , machine learning , quantum mechanics , astronomy

Phase field simulations are performed to investigate the domain structures of soft ferromagnetic nanodots. It is found that the stability of the domain state is sensitive to its lateral dimensions. As the lateral dimensions increase, the stable domain state gradually changes from polar to vortex, with a transitional region where both the two ordered states are stable. Interestingly, the phase diagram is also a strong function of mechanical loads. By appropriately choosing the lateral dimensions, transformations between polar and vortex states can be induced or controlled by mechanical loads. The study provides instructive information for the applications of ferromagnetic nanostructures

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