Tunability of domain structure in partially inverse spinels NiAl2O4

Re-arrangement of cationic distribution in partially inverse spinel NiAl2O4 by using chemical pressure perturbation is studied. Structural, impedance and magnetic analysis suggest presence of regions/domains inside the grain/bulk with same lattice arrangement but varying in cationic oxidation state....

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Bibliographic Details
Published in:Heliyon 2024-05, Vol.10 (9), p.e30181-e30181, Article e30181
Main Authors: Farhan, M. Arshad, Javaid, Sadaf, Rasheed, Lubna, Ur Rehman, M. Atiq, Nadeem, M.
Format: Article
Language:English
Subjects:
Cationic domains
Cationic-rearrangement
Chemical pressure perturbation
crystal structure
domain
magnetism
oxidation
Partially-inverse Spinel
Structure-Property Relationship
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Summary:Re-arrangement of cationic distribution in partially inverse spinel NiAl2O4 by using chemical pressure perturbation is studied. Structural, impedance and magnetic analysis suggest presence of regions/domains inside the grain/bulk with same lattice arrangement but varying in cationic oxidation state. Perturbing the cationic distribution in the grain via low concentrations of ambivalence substituent rearranges the cationic distribution across these domains within the partially inverse spinel lattice without disturbing the crystal structure. A comprehensive explanation on the origin & tunability of cationic distribution within the partially-inverse lattice is proposed. •Cationic distribution in partially Inverse Spinels is responsible for anomalous dielectric behavior.•Regions of varying cationic oxidation states within lattice are termed as cationic domains with normal as well as inverse symmetry.•Low concentration doping can be utilized to perturb cationic distribution in these domains.
ISSN:2405-8440
2405-8440
DOI:10.1016/j.heliyon.2024.e30181