Open Access2-D Surface Morphology and Dielectric Properties of Sr and Zr co-doped CaTiO3
Author(s) -
Falguni Bhadala,
Lokesh Suthar,
M. Roy,
Vikash Kumar Jha,
Rudra Pratap Singh
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/577/1/012065
Subject(s) - scanning electron microscope , orthorhombic crystal system , materials science , dielectric , analytical chemistry (journal) , ceramic , doping , conductivity , diffraction , morphology (biology) , mineralogy , phase (matter) , crystallography , crystal structure , chemistry , optics , composite material , optoelectronics , genetics , physics , organic chemistry , chromatography , biology
The ceramic sample of Ca 1-x Sr x Ti 1-y Zr y O 3 where x = 0.5 and y = 0.5 (CSTZO) was synthesized by solid state reaction method. Analysis of X-ray diffraction data confirmed the formation of orthorhombic phase. The 2-D surface mo rphology was studied using scanning electron microscopy (SEM). The micrograph shows that the spherical shaped grains vary in the range of 1-2μm and the size of agglo merates varies in the range of 5 to 10 μm in diameter. The dielectric permittivity improved by the substitution of Sr and Zr on A and B-sites. Further, the dc conductivity measured by the two probe method in a temperature scan of 470K to 670K, showed NTCR of the material.