Structural evolution of transition metal orthoborates (Zn3B2O6−Co3B2O6) with the Kotoite mineral structure: Synthesis, structure and properties

Sivakumar, G and Natarajan, S (2022) Structural evolution of transition metal orthoborates (Zn3B2O6−Co3B2O6) with the Kotoite mineral structure: Synthesis, structure and properties. In: Zeitschrift fur Anorganische und Allgemeine Chemie .

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Abstract

We describe the synthesis, structure, optical, magnetic, and dielectric properties of Zn3B2O6 and Co3B2O6 systems with the detailed investigation of the structural transition along with the evolution of color. The compounds were (Zn3-xCox)B2O6 (0≤x≤3)synthesised by high temperature solid-state reactions. Rietveld refinements of the powder X-ray diffraction (PXRD) patterns on (Zn2.25 Co0.75)B2O6 and (Co2.25Zn0.75)B2O6 samples indicate uniform distribution of Zn and Co in their respective crystallographic sites. UV-Vis absorption spectra on the samples can be explained based on the electronic transitions of Co2+ ions in tetrahedral and octahedral coordination. NIR reflectivity studies on Zn3B2O6 was found to be better than that of TiO2, which suggests possible use of this compound for reflective coatings. The temperature dependent magnetic susceptibility studies indicate antiferromagnetic behaviour. The compounds exhibit low dielectric loss across the investigated frequencies. © 2022 Wiley-VCH GmbH.

Item Type:	Journal Article
Publication:	Zeitschrift fur Anorganische und Allgemeine Chemie
Publisher:	John Wiley and Sons Inc
Additional Information:	The copyright for this article belongs to John Wiley and Sons Inc
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	18 May 2022 06:17
Last Modified:	18 May 2022 06:17
URI:	https://eprints.iisc.ac.in/id/eprint/71813

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