کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1618291 1005703 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
YPd2Al3—A new superconducting compound
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
YPd2Al3—A new superconducting compound
چکیده انگلیسی

We have prepared a polycrystalline sample of YPd2Al3 – a so far unknown member of the well-known group of intermetallic compounds REPd2Al3 (RE = rare earth elements). The XRPD analysis revealed that the YPd2Al3 compound crystallizes in the hexagonal crystal structure adopted by the entire REPd2Al3 family, too. For the new material we have measured the magnetization, AC susceptibility, specific heat and electrical resistivity with respect to temperature and magnetic field. We have observed superconductivity with TSC ≈ 2.2 K in well-annealed samples and Pauli paramagnetism in normal state. We have also performed ab initio electronic structure calculations and found reasonable agreement between experimental findings and corresponding results of theoretical calculations.

Research highlights▶ YPd2Al3-a new metallic superconductor belonging to RENi2Al3 structure type. ▶ Polycrystalline material was prepared by standard arc melting under the pure Ar. ▶ Strong increase of TSC was induced by heat treatment at 700 °C. ▶ Maximum TSC = 2.2 K. ▶ All results are supported and in good agreement with electronic structure calculation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 509, Issue 5, 3 February 2011, Pages 1401–1406
نویسندگان
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