Phase transition and crystal structures of BaZn2Si2O7

Synthesis and luminescent properties of Eu2+ doped BaZn2Si2O7 phosphors by combustion-assisted synthesis method

“…The pure phase of BaZn 2 Si 2 O 7 has formed in these samples. The diffraction peak positions are well matched with that in the literature (orthorhombic crystal system, space group Ccm2 1 , a = 7.6199Å, b = 13.0265Å, c = 6.7374Å,˛=ˇ= = 90 • ) [24]. In this work, the structure of BaZn 2 Si 2 O 7 with space group Ccm2 1 was taken as the starting model for the synthesized phosphors.…”

“…Two silicon tetrahedral are connected by sharing an oxygen, forming a di-silicate group Si 2 O 7 . The di-silicate groups further share corner with the [ZnO 4 ], forming a three-dimensional framework [24]. All of the barium atoms are located in the channel and coordinated by oxygen atoms in both the structures (Fig.…”

Luminescent properties of red long persistence phosphors, BaMg2Si2O7:Eu2+, Mn2+

“…Powder X-ray diffraction measurements revealed that the crystal structure of all prepared samples was BaCo 2 Si 2 O 7 , as reported by Adams et al, with low temperature phase of BaZn 2 Si 2 O 7 [8,9]. The Ba 0.99 Mg 1.8 Si 2 O 7 :Eu 0.01 , Mn 0.2 structure was refined by Rietveld analysis for the neutron diffraction data using structural parameters of BaCo 2 Si 2 O 7 .…”

Temperature resistant red and purple ceramic pigments based on the solid solution series BaZn2−xNixSi2O7 and BaMg2−xNixSi2O7

“…The crystal structures of BaZn 2 Si 2 O 7 and BaMg 2 Si 2 O 7 are known from the literature [30,31]. Fig.…”

“…Since there is no entry of the low temperature phase of BaZn 2 Si 2 O 7 in the ICSD-database until now, the data set of the isostructural phase BaCo 2 Si 2 O 7 (ICSD 81473) was used for the starting values of the Pawley analysis, as it has already been successfully performed and reported in the literature [30]. Diffuse reflectance spectra were recorded using a Shimadzu UV-3102 PC UV-VIS-NIR Scanning Spectrophotometer with a BaSO 4 coated integrating sphere attachment.…”