Open AccessPhotoluminescence behaviour of Gd doped barium hexaferrite
Author(s) -
Jayashri Mahapatro,
Sadhana Agrawal
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/798/1/012011
Subject(s) - photoluminescence , barium , materials science , gadolinium , doping , analytical chemistry (journal) , ion , ultraviolet , chemistry , optoelectronics , organic chemistry , chromatography , metallurgy
This paper reports synthesis of Barium Hexaferrite with different concentration of Gadolinium ion (0-2 mol %). Structural analysis of the prepared powders was done by X-ray diffraction pattern which reveals formation of hexagonal structure with space group p6 3 /mmc. The FTIR and EDX spectra depict formation and composition of Barium Hexaferrite respectively. Agglomeration was observed from the SEM image of the prepared sample. Photoluminescence studies of the prepared samples show intensified PL emission peaks at 658 nm under ultraviolet (UV) excitation at 230 nm due to the optical transition 6 G 7/2 to 6 P 5/2 which arises because of the defects produced by doping of Gadolinium ion into the host lattice. Due to cross relaxation process PL intensity decreases after 1.5 mol% of doping concentration. CIE (commission International de) coordinates and CCT (correlated colour temperature) were also determined for the prepared samples which indicate that the powder samples show intense red cool emission.