کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7993654 | 1516153 | 2018 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetostriction of ferromagnetic shape memory alloy Ni2.27Mn0.73Ga studied in magnetic fields up to 10â¯T
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Magnetostriction of a non-modulated martensite was measured for Ni2.27Mn0.73Ga ferromagnetic shape memory alloy in steady magnetic fields μ0H up to 10â¯Tâ¯at temperatures below room temperature and in μ0Hâ¯â¤â¯1â¯Tâ¯at temperatures above room temperature. Linearity of the longitudinal magnetostriction λ|| observed at high fields μ0Hâ¯>â¯6â¯T implies that the magnetostriction is associated with a 3d electron band. The anisotropic magnetostriction obtained in a magnetic field μ0Hâ¯=â¯1â¯Tâ¯at Tâ¯=â¯4.2â¯K is â¼16â¯ppm and decreases down to 3â¯ppm with the increase in temperature. The volume magnetostriction is positive but very small (â¼0.6â¯ppm) under these conditions. In the region of the magnetostructural phase transition the longitudinal and volume magnetostriction showed a complex sigh-changing behavior which depends on the strength of applied magnetic field. Thermal expansion coefficient α of Ni2.27Mn0.73Ga in the martensitic state was measured to be α â¼13â¯Ãâ¯10â6â¯Kâ1 which is comparable with the thermal expansion coefficient of a non-stoichiometric Ni2.19Mn0.81Ga single crystal.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 741, 15 April 2018, Pages 689-692
Journal: Journal of Alloys and Compounds - Volume 741, 15 April 2018, Pages 689-692
نویسندگان
V. Khovaylo, I. Tereshina, G. Politova, A. Karpenkov, S. Taskaev, T. Palewski,