کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
815267 906323 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Magnetocaloric Properties in (La0.57Dy0.1)Sr0.33MnO3 Polycrystalline Nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک مواد
پیش نمایش صفحه اول مقاله
Magnetocaloric Properties in (La0.57Dy0.1)Sr0.33MnO3 Polycrystalline Nanoparticles
چکیده انگلیسی

Nanosized particles of (La0.57Dy0.1)Sr0.33MnO3 perovskite-type oxides were successfully synthesized at relatively low calcinated temperature of 800 °C for 10 h using amorphous molecular alloy as precursor. X-ray diffraction (XRD) and electron diffraction (ED) revealed that the resulting product is of pure single-phase rhombohedral structure. From the measurements and calculation of isothermal magnetization at different temperatures, we discovered that the maximum magnetic entropy change at TC (358 K) increases near linearly with magnetic field increasing and shows no sign of saturation even under 5 T; moreover, a comparatively large magnetic entropy change with broader peak temperature range around the Curie temperature is also observed, and this good performance may be related to the large surface and interface of nanoparticles.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Rare Metal Materials and Engineering - Volume 38, Issue 10, October 2009, Pages 1707-1710