کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5457503 | 1515823 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and magnetocaloric characterization of rapidly solidified ErMn2 melt-spun ribbons
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis and magnetocaloric characterization of rapidly solidified ErMn2 melt-spun ribbons Synthesis and magnetocaloric characterization of rapidly solidified ErMn2 melt-spun ribbons](/preview/png/5457503.png)
چکیده انگلیسی
We have fabricated melt-spun ribbons of nominal composition ErMn2 and studied their phase constitution and magnetocaloric (MC) properties by X-ray diffraction, scanning electron microscopy (SEM), magnetization and heat capacity measurements. The major phase formed shows the MgZn2-type hexagonal structure (C14-type); however, both XRD and SEM analyses revealed the formation of impurity phases (i.e., Er6Mn23 and ErMn12). Ribbons exhibit a saturation magnetization of 149 Am2kgâ1 at 2 K and a Curie temperature of TC = 15 K. A field-induced metamagnetic transition at very low critical magnetic fields was observed below 8 K that leads to a change of sign in the magnetic entropy change ÎSM below this temperature (ÎSMpeak = 2.5 Jkgâ1Kâ1 at 2 K and 5 T). For a magnetic field change of 5 T (2 T) applied along the ribbon length, the samples show a large peak value of the magnetic entropy change ÎSMpeak of â20.5 (â10.8) Jkgâ1Kâ1, a full-width at half-maximum δTFWHM for the ÎSM(T) curve of 20 (12) K, and a maximum adiabatic temperature change ÎTadmax of 7.4 (3.6) K. The obtained results are compared with the reported in literature by other authors for bulk alloys.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 88, September 2017, Pages 41-45
Journal: Intermetallics - Volume 88, September 2017, Pages 41-45
نویسندگان
J.L. Sánchez Llamazares, P. Ibarra-Gaytán, C.F. Sánchez-Valdés, P. Álvarez-Alonso, A.D. MartÃnez-Iniesta,