کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1654957 1007712 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimization of the hydrothermal synthesis of La0.7Sr0.3MnO3 + δ using an original optimal experimental design
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Optimization of the hydrothermal synthesis of La0.7Sr0.3MnO3 + δ using an original optimal experimental design
چکیده انگلیسی

This paper shows one example of synthesis using optimal design methodology in material science. The aim is to determine the initial concentrations in lanthanum, strontium and manganese which have to be introduced in the reaction medium to obtain by hydrothermal synthesis the manganite powder of composition La0.7Sr0.3MnO3 + δ. Two original designs, in which two of the precursors concentrations vary, are built to estimate the parameters (or effects) of two predictive quadratic models giving the strontium and lanthanum proportions vs. strontium and manganese concentrations (design 1) and vs. strontium and lanthanum concentrations (design 2), the third precursor concentration being fixed. The sole triplet of concentrations leading to the hoped oxide is obtained at the issue of 18 runs. The repeatability of the procedure is checked by synthesizing three times the manganite of composition La0.7Sr0.3MnO3 + δ.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 59, Issue 21, September 2005, Pages 2615–2620
نویسندگان
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