کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8161466 | 1525118 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Multiferroic properties of Sr-doped BiFeO3 nanoparticles
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The effects of 'Sr-doping' and 'particle size' on multiferroic properties of BiFeO3 nanoparticles were studied. Structural analysis revealed no influence on the rhombohedral structure of BiFeO3 with Sr-doping in the synthesized nanoparticles. The particle size of Sr-doped BiFeO3 nanoparticles was tailored by varying calcination temperature. The crystallite size got reduced with Sr-doping and also on decreasing the calcination temperature. Lattice strain was observed to enhance with reducing particle size of Sr-doped BiFeO3 nanoparticles. Magnetic measurements confirmed enhancement in magnetization via suppression of spin cycloidal structure with Sr-doping owing to creation of oxygen vacancies, enhanced lattice strain and reduction in particle size. Dielectric analysis revealed deterioration of dielectric constant of BiFeO3 with Sr-doping due to the formation of oxygen vacancies. Further, on reducing particle size of Sr-doped BiFeO3 nanoparticles, both saturation magnetization and dielectric constant values registered increase. Lowering of the magnetic phase transition temperature with particle size of Sr-doped BiFeO3 nanoparticles indicated weakening of magnetic exchange interactions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 531, 15 February 2018, Pages 51-57
Journal: Physica B: Condensed Matter - Volume 531, 15 February 2018, Pages 51-57
نویسندگان
Gitanjali Dhir, Poonam Uniyal, N.K. Verma,