Dielectric studies of Fe Doped SmCrO3 Perovskites

International Conference on Materials Science and Technology 2012

Prasad, Bandi Vittal^1 ; Rao, B. Venugopal^1 ; Narsaiah, K.^1 ; Rao, G. Narsinga^2 ; Chen, J.W.^2 ; Babu, D. Suresh^1

Department of Physics, Osmania University, Hyderabad, India^1

Department of Physics, National Taiwan University, Taipei, Taiwan^2

关键词: Colossal dielectric constant;    Dielectric studies;    Frequency ranges;    Impedance measurement;    Orthorhombic structures;    Perovskite ceramics;    Relaxor ferroelectric;    Temperature range;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/73/1/012061/pdf
DOI  :  10.1088/1757-899X/73/1/012061

来源: IOP

【 摘 要 】

Polycrystalline Fe doped SmCrO3 perovskite ceramics were prepared by sol-gel route and characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), dielectric and Impedance measurements. Single-phase perovskite Fe doped SmCrO3 obtained has been confirmed from the XRD pattern with orthorhombic structure. The dielectric properties of perovskite Fe doped SmCrO3 ceramics were studied in the frequency range of 100Hz-1MHz in the temperature range from 80 K to 300 K. These materials exhibited colossal dielectric constant value of ∼ 104at room temperature. The response is similar to that observed for relaxor-ferroelectrics. To get the detailed information, IS data analysis was performed.