کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1623213 1516412 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The crystal structure and thermal expansion properties of solid solutions Ln2−xDyxW3O12 (Ln = Er and Y)
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
The crystal structure and thermal expansion properties of solid solutions Ln2−xDyxW3O12 (Ln = Er and Y)
چکیده انگلیسی

Crystal structures and thermal expansion properties of solid solutions Ln2−xDyxW3O12 (Ln = Er and Y) were studied by room and high temperature X-ray diffraction. Rietveld analysis results show that compounds Er2−xDyxW3O12 with 0 ≤ x ≤ 0.7 and Y2−xDyxW3O12 with 0 ≤ x ≤ 1.0 have orthorhombic structures and show negative thermal expansion in temperature range of 200–800 °C while compounds Er2−xDyxW3O12 with 1.2 ≤ x ≤ 2.0 and Y2−xDyxW3O12 with 1.5 ≤ x ≤ 2.0 have monoclinic structures and exhibit positive thermal expansion in temperature range of 25–800 °C. Thermogravimetric (TG) and differential thermal analysis (DTA) were used to study the hygroscopicity and the phase transition temperature.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 465, Issues 1–2, 6 October 2008, Pages 556–561
نویسندگان
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