期刊
CERAMICS INTERNATIONAL
卷 42, 期 3, 页码 4176-4184出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2015.11.091
关键词
Dielectric properties; Magnetic properties; Ceramics; Ball milling
资金
- UGC-BSR
- UGC-DS Kothari Postdoc Fellowship
- UGC-DAE-CSR, Mumbai [CRS-M-180]
The effect of the La3+ and Gd3+ co-doping on the structure, electric and magnetic properties of BiFeO3 (BFO) ceramics are investigated. For the compositions (x=0 and 0 <= y <= 0.15) in the perovskite structured LaxGdyBi1-xFeO3 system, a tiny residual phase of Bi2Fe4O9 is noticed. Such a secondary phase is suppressed with the incorporation of 'La' content (x). The magnitude of dielectric constant (epsilon(r) increases progressively by increasing the 'La' content from x=0 to 0.15 with a remarkable decrease of dielectric loss. For x=0.15, the system LaxGdyBi1-x(x+y)FeO3 exhibits highest remanent magnetization (M-r) of 0.18 emu/g and coercive magnetic field (H-c) of similar to 1 Tin the presence of external magnetic field of 9 T at 300 K. The origin of enhanced dielectric and magnetic properties of LaxGdyBil (x+y)Fe03 and the role of doping elements, La3+, Gd3+ has been discussed. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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