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Title: Optically isotropy in scintillator host compounds M{sub 2}LaCl{sub 5} (M=Rb, and Cs): Ab-initio study

Full potential linearized augmented plane wave method (FP-LAPW) has been used to calculate the electronic structure and optical properties of high light output scintillator host compounds M{sub 2}LaCl{sub 5} (M=Rb, and Cs) with in the Tran Blaha modified Becke Johnson (TB-mBJ) potential. These are wide band gap materials with the band gap of 4.75, and 4.72 eV for Rb{sub 2}LaCl{sub 5}, and Cs{sub 2}LaCl{sub 5} respectively. From the calculated optical properties of these compounds, we find these compounds to be optically isotropic, though they are structurally anisotropic, which is an important criteria for the ceramic scintillators.
Authors:
;  [1] ;  [2]
  1. Department of Physics, Indian Institute of Technology Hyderabad, Ordance Factory Estate, Yeddumailaram-502205, Telangana (India)
  2. Advanced Centre of Research in High Energy Materials(ACRHEM), University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Hyderabad-500046, Telangana (India)
Publication Date:
OSTI Identifier:
22490542
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANISOTROPY; CERAMICS; CESIUM COMPOUNDS; ELECTRONIC STRUCTURE; ENERGY GAP; EV RANGE; ISOTROPY; LANTHANUM CHLORIDES; PHOSPHORS; RUBIDIUM COMPOUNDS; VISIBLE RADIATION; WAVE PROPAGATION