The Observation of Martensite and Magnetic Domain Structures in Ni53Mn24Ga23 Shape Memory Alloys by Scanning Electron Acoustic Microscopy and Scanning Thermal Microscopy.
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| Title: | The Observation of Martensite and Magnetic Domain Structures in Ni |
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| Authors: | Zhao Kun-Yu1, Zeng Hua-Rong1 huarongzeng@mail.sic.ac.cn, Song Hong-Zhang2, Hui Sen-Xing1, Li Guo-Rong1, Yin Qing-Rui1 |
| Source: | Chinese Physics Letters. May2012, Vol. 29 Issue 5, p1-4. 4p. |
| Subjects: | Martensite, Ferromagnetic materials, Magnetic domain, Shape memory alloys, Scanning electron microscopy, Acoustic microscopy, Scanning probe microscopy, Crystallography, Magnetic force microscopy |
| Abstract: | We present observations of martensite variants and ferromagnetic domain structures of Ni53Mn24Ga23 ferromagnetic shape memory alloys with a pure tetragonal martensitic phase by using scanning electron acoustic microscopy (SEAM) and scanning thermal microscopy (SThM). Electron acoustic images show a polycrystalline morphology with martensite variants. Direct coincidence between crystallographic martensitic twin variants and magnetic domains is found. A domain-like structure, obtained by SThM, is firstly reported, and then confirmed by magnetic force microscopy (MFM). The experimental results will be helpful for investigating the local thermal properties of ferromagnets and understanding the relationship between martensite variants and magnetic domains. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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