کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10482232 | 933310 | 2005 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the magnetocaloric effect in d-metal pnictides
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
فیزیک ریاضی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Recently, the potentialities to develop large magnetocaloric contributions close to room temperature were pointed out in MnFe(As,P). Here, we aim to better underline the main characteristics of the magnetoelastic effect exhibited by many of the d-metal pnictides with formulae MMâ²X. We have performed systematic neutron diffraction experiments, thus allowing the anticipation of the different contributions to entropy. High magnetic field measurements, in particular under pressure, were performed to quantify the most pertinent (T, P, H) of the phase diagrams. Finally, complete insights of the electronic polarisation instabilities were deduced from KKR-CPA band structure calculations. All fundamental analyses lead to confirm the very interesting magnetocaloric characteristics exhibited by the MMâ²X series. In parallel, we have currently quantified the change of entropy at the transition to deduce the magnetocaloric contribution. Here, we report a first analysis of the crystal structure and magnetic peculiarities of selected compounds, from a series we studied for a long time.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 358, Issue 1, 1 December 2005, Pages 123-135
Journal: Physica A: Statistical Mechanics and its Applications - Volume 358, Issue 1, 1 December 2005, Pages 123-135
نویسندگان
D. Fruchart, F. Allab, M. Balli, D. Gignoux, E.K. Hlil, A. Koumina, N. Skryabina, J. Tobola, P. Wolfers, R. Zach,