کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1582494 1514875 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comparison of different methods for studying magnetic domains in Ni–Mn–Ga martensites
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Comparison of different methods for studying magnetic domains in Ni–Mn–Ga martensites
چکیده انگلیسی

The relationship between magnetic domains and martensite twin structure was studied in selected Ni–Mn–Ga alloys. Optical microscopy, scanning electron microscopy (SEM) and magnetic force microscopy were used for studying the magnetic domains and the morphology of the martensitic microstructure. SEM Type-I magnetic domain contrast was consistent with the contrast obtained from magneto-optical indicator, as both contrasts originate from the stray field above the sample surface. SEM Type-II magnetic contrast in the backscattered electron (BE) image can display, apart from the martensitic twinning structure, both the magnetic domain contrast and the domain wall contrast. Therefore, the coupling of magnetic and twin structures can be evaluated from the BE image. Surprisingly, optical non-polarizing microscopy can reveal the domain contrast, too. This contrast is due to the surface relief associated with the magnetic domains.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volumes 481–482, 25 May 2008, Pages 302–305
نویسندگان
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