کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1527843 995396 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis, structures and thermal properties of solid solutions ErxDy2−xMo4O15 (x = 0.0–2.0)
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Synthesis, structures and thermal properties of solid solutions ErxDy2−xMo4O15 (x = 0.0–2.0)
چکیده انگلیسی

A new series of rare earth solid solutions of ErxDy2−xMo4O15 (x = 0.0–2.0) were successfully prepared. Their structures and thermal properties were studied by X-ray diffraction for temperature ranging from 25 to 500 °C. These solid solutions are found to crystallize in a monoclinic space group P21/c. The lattice parameters a, b and c of ErxDy2−xMo4O15 decrease linearly with increasing erbium content. High-temperature XRD results show that these solid solutions show positive thermal expansion with rising temperature, very likely related to the weak bond Mo⋯O14 in ErxDy2−xMo4O15. To make compounds of Ln2Mo4O15 family show negative thermal expansion, a possible way is to strengthen the weak Mo⋯O14 bond by shortening the Mo⋯O14 bond length.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 104, Issue 1, 15 July 2007, Pages 68–73
نویسندگان
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