کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1297520 1498403 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structure, stability and electrical properties of the La(2−x)SrxMnO4±δ solid solution series
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Structure, stability and electrical properties of the La(2−x)SrxMnO4±δ solid solution series
چکیده انگلیسی

Single phase materials of the La(2−x)SrxMnO4±δ (0.6 ≤ x ≤ 2.0) solid solution series were prepared via solid state reaction. The structure of each material was examined at room temperature and determined to be tetragonal for all phases examined. An expansion in lattice volume was observed on increasing lanthanum content. The stability and thermal expansion of each member of the solid solution series was determined via the use of in situ high temperature X-ray diffraction. It was found that all materials remained stable up to a temperature of 800 °C. Thermal expansion coefficients were found to be in the region of 15 × 10− 6 K− 1 for La(2−x)SrxMnO4±δ compounds where x > 1.4. The electrical conductivity of each phase was also determined over a similar temperature range with a maximum value of ∼6 Scm− 1 at 900 °C for the x = 1.8 phase.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 177, Issues 19–25, 15 October 2006, Pages 1849–1853
نویسندگان
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