کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9783209 | 1511871 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrical conductivity of LaxSr2âxFe1âyRuyO4±δ
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Materials of the K2NiF4 structure type have been prepared and the electrical conductivity in air determined for a number of compositions in the LaxSr2âxFe1âyRuyO4±δ solid solution series including three with Ru substituted for Fe on the B site: La0.2Sr1.8Fe0.6Ru0.4O4±δ, La0.4Sr1.6Fe0.7Ru0.3O4±δ, and La0.6Sr1.4Fe0.8Ru0.2O4±δ. Overall the total conductivity values measured were lower than expected for the Ru-doped materials, with a peak conductivity of â2 S cmâ1 at 700 °C. In the undoped LaxSr2âxFeO4±δ materials, a significant jump in conductivity was observed between the x = 0.7 and 0.8 compositions and was related to the bonding in the materials and the Fe3+/Fe4+ redox behaviour. In all materials, the conduction behaviour was found to follow a semi-conducting trend.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 89, Issues 2â3, 15 February 2005, Pages 354-358
Journal: Materials Chemistry and Physics - Volume 89, Issues 2â3, 15 February 2005, Pages 354-358
نویسندگان
A.J. Jennings, C.K.M. Shaw, S.J. Skinner,