کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5454743 | 1514359 | 2017 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Solid state synthesis and analyses of Sr4(Sr2Ta2)O11 complex perovskite with reduced heat treatment steps
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Solid state synthesis and analyses of Sr4(Sr2Ta2)O11 complex perovskite with reduced heat treatment steps Solid state synthesis and analyses of Sr4(Sr2Ta2)O11 complex perovskite with reduced heat treatment steps](/preview/png/5454743.png)
چکیده انگلیسی
In this work we report the structure, thermal and electrical properties of complex perovskite Sr4(Sr2Ta2)O11 synthesized by solid state reaction route assisted by high energy ball milling. With the help of thermal analysis the required final perovskite phase was obtained through single step calcination process. The XRD patterns of 900 °C calcined samples showed the formation of single phase double perovskite structure. After sintering at 1200 °C for 10 h the crystal structure changed from cubic to tetragonal symmetry due to possible oxygen vacancy ordering. Detailed study of total conductivity using impedance spectroscopy measurements of the sintered pellet showed an increase in conductivity up to 580 °C. However, a reverse effect was observed above 600 °C due to the ion-ion interaction in the disordered lattice, which begins to dominate, leading to a decrease in total conductivity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 128, June 2017, Pages 142-147
Journal: Materials Characterization - Volume 128, June 2017, Pages 142-147
نویسندگان
Bradha M., Kavitha K., Vijayaraghavan T., Vijila G., Suresh P., Udhayabanu V., Anuradha Ashok,