Jump to main content
Jump to site search

Issue 32, 2015
Previous Article Next Article

BaGa4O7, a new A3BC10O20 crystalline phase: synthesis, structural determination and luminescence properties

Author affiliations

Abstract

The synthesis, structural determination and luminescence properties of a new barium gallate, BaGa4O7, are reported. This crystalline material can uniquely be obtained by direct cooling from the molten state. The crystallographic structure was determined using a combination of electron, synchrotron and neutron powder diffraction data. BaGa4O7 crystallizes in the monoclinic I2/m space group with a = 15.0688(1) Å, b = 11.7091(1) Å, c = 5.1429(2) Å and β = 91.0452(2)° and can be described as an original member of the A3BC10O20 family. Atypical for this A3BC10O20 structural framework, BaGa4O7 is found to contain exclusively divalent and trivalent cations. In order to maintain overall electroneutrality, disordered defect-type partial substitution of gallium and oxygen ions on barium sites occurs within the pentagonal channels of BaGa4O7. Thanks to the flexibility of this structural framework, BaGa4O7 can be heavily doped with europium and thus is shown to exhibit strong orange-red luminescence emission at 618 nm under 393 nm excitation.

Graphical abstract: BaGa4O7, a new A3BC10O20 crystalline phase: synthesis, structural determination and luminescence properties

Back to tab navigation

Supplementary files

Article information


Submitted
05 Jun 2015
Accepted
04 Jul 2015
First published
07 Jul 2015

CrystEngComm, 2015,17, 6127-6135
Article type
Paper
Author version available

BaGa4O7, a new A3BC10O20 crystalline phase: synthesis, structural determination and luminescence properties

M. Boyer, E. Véron, A. I. Becerro, F. Porcher, M. R. Suchomel, G. Matzen and M. Allix, CrystEngComm, 2015, 17, 6127
DOI: 10.1039/C5CE01101A

Social activity

Search articles by author

Spotlight

Advertisements