کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1295653 1498411 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermodynamic stability and disordering in LacSr1−cMnO3 solid solutions
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Thermodynamic stability and disordering in LacSr1−cMnO3 solid solutions
چکیده انگلیسی

Two different types of ab initio electronic and atomic structure calculations for ordered solid solutions are combined with solid solution thermodynamics in a study of the Sr-doped LaMnO3. Unlike Ba in the isostructural (Sr,Ba)TiO3, Sr aggregation in the LaMnO3 matrix potentially leading to decomposition into heterogeneous mixture of LaMnO3 and SrMnO3 phases is energetically unfavorable. We demonstrate that for a particular solid solution with 12.5% Sr the order–disorder transition occurs only at very high temperatures otherwise Sr is supposed to be periodically distributed in the LaMnO3 matrix.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 177, Issues 3–4, 31 January 2006, Pages 217–222
نویسندگان
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