Research Article
Ni and Fe substitutional effects on Metal Insulator transition in GdBaCo2O5.5±δ cobaltite
@INPROCEEDINGS{10.4108/eai.7-12-2021.2314642, author={Yasodha P}, title={Ni and Fe substitutional effects on Metal Insulator transition in GdBaCo2O5.5±δ cobaltite}, proceedings={Proceedings of the First International Conference on Combinatorial and Optimization, ICCAP 2021, December 7-8 2021, Chennai, India}, publisher={EAI}, proceedings_a={ICCAP}, year={2021}, month={12}, keywords={dsc dc ni and fe substitute}, doi={10.4108/eai.7-12-2021.2314642} }- Yasodha P
Year: 2021
Ni and Fe substitutional effects on Metal Insulator transition in GdBaCo2O5.5±δ cobaltite
ICCAP
EAI
DOI: 10.4108/eai.7-12-2021.2314642
Abstract
Differential scanning calorimetry (DSC) and DC electrical resistivity measurements have been carried out on GdBaCo2O5.5±δ with Ni and Fe substitution at Co lattice site to probe the variation of metal insulator (MI) transition of the parent compound. XRD results show systematic variation in cell parameters with both substitutions implying that both Ni and Fe substitute at Co lattice. Ni strongly alters MI transition whereas Fe shows less influence. It was observed that Ni substitution suppresses the metal insulator transition temperature at the rate of ~5.05K/ at %. Fe substitution does not alter TMI much but diminishes MI transition.
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