Magnetic Domains and Twin Microstructure of Single Crystal Ni-Mn-Ga Exhibiting Magnetic Shape Memory Effect

被引：13
|
作者：
Heczko, Oleg [1 ]
Kopecky, Vit [1 ]
Fekete, Ladislav [1 ]
Jurek, Karel [1 ]
Kopecek, Jaromir [1 ]
Straka, Ladislav [2 ]
Seiner, Hanus [3 ]
机构：
[1] Inst Phys ASCR, Prague 18221 8, Czech Republic
[2] Aalto Univ, Sch Engn, Aalto 00076, Finland
[3] Inst Thermomech ASCR, Prague 18200 8, Czech Republic
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2015年 / 51卷 / 11期
关键词：
Magnetic domain; magnetic shape memory; NiMnGa; MARTENSITE; ALLOY; FIELD; BOUNDARIES;
D O I：
10.1109/TMAG.2015.2453054
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Magnetic domains structure of a Ni-Mn-Ga single crystal was analyzed using a magneto-optical indicator film (MOIF), magnetic force microscopy (MFM), and scanning electron microscopy (SEM) (Lorenz contrast). Thanks to magnetically induced reorientation, the different configurations of magnetic domains can be obtained in the same place of the crystal. MOIF gives the overall domain configuration, while MFM shows the details of the structure revealing the domain branching. The magnetic domain structure in the vicinity of the mobile single twin boundary of Type II was observed by SEM and related to the complex twin structure of the martensite obtained from the calculation.
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页数：4
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