Nanosystems: Phys. Chem. Math., 2022, 13 (2), 181–191
Synthesis, characterization and electrical properties of the nanosized perovskite LaFeO3
Muhammad Irfan Asghar – COMSATS Institute of Information Technology, Lahore, Pakistan; email@example.com
Muhammad Haq Nawaz – University of Gujrat, Hafiz Hayat Campus, Gujrat, Pakistan; firstname.lastname@example.org
Muhammad Idrees – COMSATS Institute of Information Technology, Lahore, Pakistan; email@example.com
Muhammad Asif – University of Engineering and Technology, Lahore, Pakistan; firstname.lastname@example.org
Ahsan Ali – School of Mechanical Engineering, University of Leeds, Leeds LS2 9JT, UK; email@example.com
Muhammad Kashif Shahid – Research Institute of Environment & Biosystem, Chungnam National University, Republic of Korea; firstname.lastname@example.org
Corresponding author: M. K. Shahid, email@example.com; M. Idrees, firstname.lastname@example.org
ABSTRACT Single-phase highly crystalline LaFeO3 is synthesized by autocombustion of the gel complex obtained from citrate and metal nitrate precursors. The XRD analysis exhibited the transformation of amorphous phases of La2O3 and Fe2O3 into highly crystalline LaFeO3 at 1000°C. The agglomerated semi spherical morphology is observed. The average particle size of sintered pellets at 1000°C for 4 h, 8, 12, and 16 h heating time is found 105, 130, 160 and 200 nm, respectively. TGA analysis revealed 27% weight lost due to the decomposition of La(OH)3 and Fe(OH)3 into La2O3, Fe2O3; and LaFeO3. Electrical properties of LaFeO3 were found to be dependent on micro-structural heterogeneities i.e., grain and grain boundaries. Two probe DC resistivity exhibited decrease in resistance with increasing heat treatment and time. The outcomes of this study confirmed the potential applications of perovskite-type LaFeO3 in energy and environmental sectors.
KEYWORDS Impedance spectroscopy, LaFeO3, perovskite, sintering, TGA
ACKNOWLEDGEMENTS Authors thank to the National Centre for Physics, Islamabad for assistance in instrumental analysis. The corresponding author (Shahid M.K.) acknowledge the support by Brain Pool Fellowship Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (Grant No.: 2019H1D3A1A02071191).
FOR CITATION Muhammad Irfan Asghar, et al. Synthesis, characterization and electrical properties of the nanosized perovskite LaFeO3. Nanosystems: Phys. Chem. Math., 2022, 13 (2), 181–191.