Open AccessGiant dielectric behavior in NdCrO3 perovskite nanoparticles
Author(s) -
D. Suresh Babu,
J. Ananthaiah,
Nripesh Kumar,
Kasarapu Venkataramana,
M. Anand pandarinath,
U P Ujwal,
P. Raju,
E. Meher Abhinav,
D. Suresh Babu
Publication year - 2022
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/1233/1/012011
Subject(s) - materials science , dielectric , perovskite (structure) , orthorhombic crystal system , conductivity , diffractometer , arrhenius equation , capacitor , relaxation (psychology) , analytical chemistry (journal) , dielectric spectroscopy , temperature coefficient , electrical impedance , condensed matter physics , mineralogy , composite material , activation energy , optoelectronics , crystal structure , crystallography , electrical engineering , chemistry , physics , scanning electron microscope , psychology , social psychology , chromatography , electrochemistry , voltage , electrode , engineering
NdCrO 3 perovskite compound synthesized via sol-gel process. Impedance spectroscopic data have been studied in the wide frequency range (0.1Hz-10MHz), at various temperatures (RT-500°C). Structural analysis have done by X-ray diffractometer, it indicates single-phase orthorhombic structure. Particle size is found to be 32nm. Microstructure seems to be uniform distribution of grains throughout the surface. This material showed the giant dielectric behaviour ( ε 1 > 10 4 ). Impedance studies of NdCrO 3 noticed that it is negative temperature coefficient of resistance type semiconductor. The dc conductivity and relaxation plots were followed by Arrhenius law. Frequency reliant ac conductivity plots followed Jonscher’s power law. These results suggesting that NdCrO 3 is suitable for gaint capacitors applications.