Synthesis and optical properties of intense blue colors oxides based on Mn5+ in tetrahedral sites in Ba7Al2-xMnxO10+y. Issue 1 (1st January 2021)

• Record Type: Journal Article
• Authors: Wang, Yuqian; Lei, Honghong; Jiang, Peng; Liu, Lin; Cui, Kunyang; Cao, Wenbin
• Is Part Of: Ceramics international. Volume 47:Issue 1(2021)
• Page Start: 686
• Page End: 691
• Publication Date: 2021-01-01
• Subjects: Ba7Al2O10 -- Mn doping -- Optical properties -- Cyan-ocean blue oxide; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2020.08.177
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Mn-doped Ba7 Al2- x Mn x O10+ y (0 ≤ x ≤ 0.7) samples with intense blue colors are successfully prepared by solid state reactions. With the increase of Mn content, the colors of compounds are tuned from cyan to ocean blue. FT-IR absorption spectrum and 27 Al NMR spectrum indicate that the structure contains a dominating portion of Al–O tetrahedral sites while a small number of Al–O octahedral sites may also exist. The oxidation state of Mn is proved to be +5. Based on all the analysis, the intense blue shades of the samples are proposed as the d-d transition of Mn 5+ ions in [AlO4 ] tetrahedral sites.