کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9804031 1516477 2005 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phase behavior and some properties of LaMn1−xRhxO3 solid solution
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Phase behavior and some properties of LaMn1−xRhxO3 solid solution
چکیده انگلیسی
Structure and magnetic and electrical properties of the polycrystalline compounds LaMn1−xRhxO3 (0 < x ≤ 1) have been investigated. The samples were characterized by X-ray diffraction and Rietveld refinement which confirmed the space group Pnma (No. 62) for all compositions at room temperature. A transformation from O′- to O-type orthorhombic structure is seen near x = 0.6 tending to make the phase unstable. The electrical conductivity measurement shows semiconducting property above room temperature with a rather low activation energy for Mn-rich compositions. Compounds in the region 0.1 ≤ x ≤ 0.9 show ferromagnetic property but the substitution of Rh3+ ion for Mn3+ ion suppresses the ferromagnetism that results in reducing the Curie temperature, TC.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 390, Issues 1–2, 22 March 2005, Pages 115-121
نویسندگان
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