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Title: Electrical properties of samarium cobaltite nanoparticles synthesized using Sol–Gel autocombustion route

Abstract

Highlights: • The structural evolution and its electrical properties of samarium cobaltite nanograins are discussed. • Optimization of SmCoO{sub 3} nanograins is achieved by post sintering as-prepared gel at 800 °C. • The impedance spectra indicate the semiconducting behavior SmCoO{sub 3} nanograins. - Abstract: Nanograins of SmCoO{sub 3} are prepared by citric acid assisted Sol–Gel autocombustion route. The characterizations of crystal structure, surface morphology and electrical properties of SmCoO{sub 3} powder are done using XRD, HRSEM, FTIR and BDS. The structural evolution of SmCoO{sub 3} upon increasing the annealing temperature is followed using XRD and FTIR analyses. The powder sample contains polycrystalline grains with average size equal to 35 nm and orthorhombic perovskite structure with Pbnm space group. The vibrational bands observed in FTIR spectrum at 545 cm{sup −1} and 439 cm{sup −1} correspond to Co-O stretching modes in cobaltite system. HRSEM images of the sample show the formation of hexagonal shaped grains of samarium cobaltite. The AC electrical conductivity of 4.914 × 10{sup −5} S cm{sup −1} at 295 K is measured for SmCoO{sub 3} nanoparticles. The impedance spectra bring out the semiconducting behavior of the material.

Authors:
; ;
Publication Date:
OSTI Identifier:
22348641
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 53; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; ELECTRIC CONDUCTIVITY; FOURIER TRANSFORMATION; INFRARED SPECTRA; NANOPARTICLES; NANOSTRUCTURES; ORTHORHOMBIC LATTICES; PEROVSKITE; POLYCRYSTALS; POWDERS; SAMARIUM; SOL-GEL PROCESS; SPACE GROUPS; VIBRATIONAL STATES; X-RAY DIFFRACTION

Citation Formats

Sathyamoorthy, B., Md Gazzali, P. M., Murugesan, C., and Chandrasekaran, G., E-mail: chandgc@gmail.com. Electrical properties of samarium cobaltite nanoparticles synthesized using Sol–Gel autocombustion route. United States: N. p., 2014. Web. doi:10.1016/J.MATERRESBULL.2014.02.009.
Sathyamoorthy, B., Md Gazzali, P. M., Murugesan, C., & Chandrasekaran, G., E-mail: chandgc@gmail.com. Electrical properties of samarium cobaltite nanoparticles synthesized using Sol–Gel autocombustion route. United States. https://doi.org/10.1016/J.MATERRESBULL.2014.02.009
Sathyamoorthy, B., Md Gazzali, P. M., Murugesan, C., and Chandrasekaran, G., E-mail: chandgc@gmail.com. 2014. "Electrical properties of samarium cobaltite nanoparticles synthesized using Sol–Gel autocombustion route". United States. https://doi.org/10.1016/J.MATERRESBULL.2014.02.009.
@article{osti_22348641,
title = {Electrical properties of samarium cobaltite nanoparticles synthesized using Sol–Gel autocombustion route},
author = {Sathyamoorthy, B. and Md Gazzali, P. M. and Murugesan, C. and Chandrasekaran, G., E-mail: chandgc@gmail.com},
abstractNote = {Highlights: • The structural evolution and its electrical properties of samarium cobaltite nanograins are discussed. • Optimization of SmCoO{sub 3} nanograins is achieved by post sintering as-prepared gel at 800 °C. • The impedance spectra indicate the semiconducting behavior SmCoO{sub 3} nanograins. - Abstract: Nanograins of SmCoO{sub 3} are prepared by citric acid assisted Sol–Gel autocombustion route. The characterizations of crystal structure, surface morphology and electrical properties of SmCoO{sub 3} powder are done using XRD, HRSEM, FTIR and BDS. The structural evolution of SmCoO{sub 3} upon increasing the annealing temperature is followed using XRD and FTIR analyses. The powder sample contains polycrystalline grains with average size equal to 35 nm and orthorhombic perovskite structure with Pbnm space group. The vibrational bands observed in FTIR spectrum at 545 cm{sup −1} and 439 cm{sup −1} correspond to Co-O stretching modes in cobaltite system. HRSEM images of the sample show the formation of hexagonal shaped grains of samarium cobaltite. The AC electrical conductivity of 4.914 × 10{sup −5} S cm{sup −1} at 295 K is measured for SmCoO{sub 3} nanoparticles. The impedance spectra bring out the semiconducting behavior of the material.},
doi = {10.1016/J.MATERRESBULL.2014.02.009},
url = {https://www.osti.gov/biblio/22348641}, journal = {Materials Research Bulletin},
issn = {0025-5408},
number = ,
volume = 53,
place = {United States},
year = {Thu May 01 00:00:00 EDT 2014},
month = {Thu May 01 00:00:00 EDT 2014}
}