کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1808867 1525172 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Magnetic and magnetocaloric study of manganite compounds Pr0.5A0.05Sr0.45MnO3 (A=Na and K) and composite
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Magnetic and magnetocaloric study of manganite compounds Pr0.5A0.05Sr0.45MnO3 (A=Na and K) and composite
چکیده انگلیسی

Structural, magnetic and magnetocaloric properties of Pr0.5A0.05Sr0.45MnO3 (A=Na and K) have been investigated. Our samples have been elaborated by the conventional ceramic method at high temperature. X-ray diffraction patterns using Rietveld refinement reveal that our compounds are single phase and crystallize in the orthorhombic structure with Pbnm space group. Magnetization measurements versus temperature under an applied magnetic field of 50 mT indicate that all our investigated samples exhibit a paramagnetic–ferromagnetic transition with decreasing temperature. The values of the Curie temperatures are 270 K and 275 K for A=Na and K, respectively. The magnetocaloric study of a manganite-based composite reveals an enhancement of relative cooling power which is around 67.37% of pure Gd under an applied magnetic field of 5 T.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 477, 15 November 2015, Pages 75–82
نویسندگان
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