Studies on samarium modified SrBi₄Ti₄O₁₅ Aurivillius ferroelectric ceramics

Abstract

Samarium modified SrBi_4-xSm_xTi₄O₁₅ (x = 0, 0.13, 0.43 and 0.78) ferroelectric ceramics of Aurivillius family were prepared by conventional solid state reaction method. X-ray diffraction studies confirm the formation of a single-phase. Microstructural images show randomly oriented palate-like structure. Broad dielectric peaks were found to obey the modified Curie-Weiss law. The overall inherent ferroelectric nature was explained on the basis of the Avrami model. Furthermore, with increasing the Sm³⁺ content, the grain morphology and diffusive parameters have shown a comprehending impact on the ferroelectric (hysteresis) behavior.

Keywords:

• BLSF
• hysteresis loop
• dielectric
• diffuse phase transition (DPT)
• modulus

Additional information

Funding

The research work is partially financed by the grants from the OU-DST PURSUE programme, India (No.: C-DST-PURSE- II/07/2018).