Distortion induced structural characteristics of Ba<sub>2</sub>R<sub>2/3</sub>TeO<sub>6</sub>(R = Y, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu) double perovskites and their multifunctional optical properties for lighting and ratiometric temperature sensing
Sariga C. Lal, Jawahar I. Naseemabeevi, Subodh Ganesanpotti
Abstract
Monoclinic (<italic>P</italic>2<sub>1</sub>/<italic>n</italic>) structure of B-site ordered double perovskites Ba<sub>2</sub>R<sub>2/3</sub>TeO<sub>6</sub>(R = Y, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) is elucidated from XRD, Raman and IR spectroscopy. The maximum relative temperature sensitivity of Ba<sub>2</sub>Y<sub>2/3</sub>TeO<sub>6</sub>:Eu<sup>3+</sup>between 300–500 K is 0.18% K<sup>−1</sup>.
Topics & Concepts
Monoclinic crystal systemCrystallographyRaman spectroscopyX-ray crystallographyCrystal structureMaterials scienceSpectroscopyChemistryAnalytical Chemistry (journal)PhysicsDiffractionChromatographyQuantum mechanicsOpticsPerovskite Materials and ApplicationsLuminescence Properties of Advanced MaterialsFerroelectric and Piezoelectric Materials