Influence of Sodium (Na+1) Ion doping on the Structural and Dielectric Nature of Lanthanum Chromite (LaCrO3)
Author(s):
Dharmendra mewada, Rajesh Kumar Katare
Keywords:
Chromites; Structure; Rietveld refinement, Dielectric properties; Jonscher’s law.
Abstract
Hereby, we report solid synthetic route to synthesize La1-xNaxCrO3 (x = 0.0, 0.05, 0.1) perovskite materials. These chromites were investigated for structural and dielectric properties. To establish the crystal structure acquired by the samples under study, we carried out X-ray diffraction, a reliable technique in addition to the Raman and FTIR characterizations. The XRD data analysis confirms orthorhombic (Pbnm) structure for all the samples. The phase formation was verified from the characteristic Raman modes of vibration and fingerprint absorption bands of the FTIR spectra. The structural analysis were polished by Rietveld Refinement of the XRD data that confirmed the above mentioned phase and other related structural parameters. Strain and particle size analysis was carried out by exploiting Williamson-Hall method. The room temperature dielectric study reveals the samples exhibit good dielectric constant and lower loss values. Jonscher’s law fitting for frequency dependent ac conductivity reveals value of n < 1 which suggests frequent hopping of carriers with translational motion. Furthermore, the conduction was thrown light through electric modulus and impedance studies.
Article Details
Unique Paper ID: 152449

Publication Volume & Issue: Volume 8, Issue 3

Page(s): 463 - 470
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