2021
DOI: 10.48550/arxiv.2102.02442
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Structural phase transition and its consequences on optical behavior of LaV$_{1-x}$Nb$_x$O$_4$

Hemanshu Dua,
Rishabh Shukla,
R. S. Dhaka

Abstract: We present the structural, electronic, vibrational, and photoluminescence properties of polycrystalline LaV1−xNbxO4 (x = 0-0.2) samples at room temperature. The x-ray absorption measurements reveal that the La ions exist in a trivalent oxidation state, while V and Nb cations possess 5+ oxidation state in tetrahedral coordination. The substitution of Nb at the V site show fascinating structural and optical behavior due to their isoelectronic character and larger ionic radii of Nb 5+ as compared to the V 5+ . Th… Show more

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