Fabrication of Mn2+ doped Al2O3 bulk crystal by flame fusion technique and their properties. (2021)

• Record Type: Journal Article
• Authors: Wongwan, W.; Sangwaranatee, N.; Keawkhao, J.; Boonin, K.
• Is Part Of: Materials today. Volume 43(2021)Part 3
• Page Start: 2641
• Page End: 2646
• Publication Date: 2021
• Subjects: Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2020.04.629
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: In this work, Mn 2+ doped Al2 O3 bulk crystal has been growth by the flame fusion technique (FFT) and investigated their properties. The crystal structure of growth sapphire was studied by X-Rays Diffractometer (XRD) found to be Al2 O3 structure according to the standard XRD pattern and no extra diffraction peaks were detected. The optical absorption spectra of sample were measured in the wavelength range of 350–1000 nm and shown only one broad band centered at 480 nm. The photoluminescence property was carried out using excitation wavelengths of 325 nm. The unusual redshift of Mn d–d emission was observed at 650 nm from 4 T1g (D) → 6 A1g (S) transition