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M L P Reddy
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Volume 34 Issue 6 October 2011 pp 1257-1262
Ba3(P1−𝑥Mn𝑥O4)2 : Blue/green inorganic materials based on tetrahedral Mn(V)
Sourav Laha Rohit Sharma S V Bhat M L P Reddy J Gopalakrishnan S Natarajan
We describe a blue/green inorganic material, Ba3(P1−𝑥Mn𝑥O4)2 (I) based on tetrahedral MnO$^{3-}_{4}$ :3𝑑2 chromophore. The solid solutions (I) which are sky-blue and turquoise-blue for 𝑥 ≤ 0.25 and dark green for 𝑥 ≥ 0.50, are readily synthesized in air from commonly available starting materials, stabilizing the MnO$^{3-}_{4}$ chromophore in an isostructural phosphate host. We suggest that the covalency/ionicity of P–O/Mn–O bonds in the solid solutions tunes the crystal field strength around Mn(V) such that a blue colour results for materials with small values of 𝑥. The material could serve as a nontoxic blue/green inorganic pigment.
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Bulletin of Materials Science
Volume 46, 2023
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Posted on October 12, 2020Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
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