کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1601940 1005224 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mössbauer effect measurement evidence for magnetic transition in ordered Fe-doped NiAl
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Mössbauer effect measurement evidence for magnetic transition in ordered Fe-doped NiAl
چکیده انگلیسی

Mössbauer effect measurements at room and cryogenic temperatures on powdered Fe-doped NiAl materials (designated as Ni–40Al–9Fe and Ni–50Al–9Fe) show that both were paramagnetic down to17 K, displaying one Fe site in the host. At 4.2 K, Ni–40Al–9Fe remained paramagnetic, while Ni–50Al–9Fe showed a magnetic transition, with a clearly resolved Fe environment. The determined internal magnetic field was 185 ± 8 kOe in comparison to 330 kOe for α-Fe (bcc) reference at room temperature. This shows that development and evolution of electronic and magnetic interactions associated with the dopant Fe in the ordered NiAl depend on its site preference tendencies. The temperature dependence of magnetic state of the dopant Fe, in conjunction with its site preference tendencies from Mössbauer effect measurements, confirms the effectiveness of this technique in the study of the hardening/softening behaviors of Fe-doped NiAl.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 15, Issue 2, February 2007, Pages 98–102
نویسندگان
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