کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10624793 | 989606 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Physical properties of (1âx)Ba0.95Pb0.05TiO3+xCo2O3 (x=0, 0.1, 0.3, 0.5, 1.0, 2.0Â wt%) ceramics
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The paper reports studies of the (1âx)Ba0.95Pb0.05TiO3 - xCo2O3 (xâ¤0.02) ceramics. Results of X-ray powder diffraction, dielectric, magnetic and IR measurements, as well as ab initio simulations are presented. The Co-doping induces small decrease of the (c/a) tetragonality of the perovskite lattice and leads to the gradual shift of the ferroelectric transition temperature from 398 K for x=0 down to 357 K for x=0.02. The conductivity activation energies are in the range 0.8-0.9 eV in agreement with the calculations. The high-temperature conductivity can be ascribed by the migration of oxygen vacancies introduced to compensate the charge deficiency due to Co3+ valence at the B-site of the perovskite lattice. At the base of present data we can say that BPTC is promising new multiferroic material with weak coupling between magnetic and ferroelectric properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 41, Issue 3, Part A, April 2015, Pages 3983-3991
Journal: Ceramics International - Volume 41, Issue 3, Part A, April 2015, Pages 3983-3991
نویسندگان
Renata Bujakiewicz-Koronska, Ewa Markiewicz, Dawid M. Nalecz, Leonid Vasylechko, Maria Balanda, Magdalena Fitta, Ewa Juszynska-Galazka, Anna Kalvane,