00816nam a22001697a 4500040003600000082001700036100002500053245008500078260003500163300003800198500013600236500004000372500004200412502005900454546001200513650012100525 cRiphah International University a530.411bBAS aBasit Sohail (26199) aEnhancement in the up conversion luminescence of Er3+/Yb3+/Fe3+ -Tridoped NaBiF4 aIslamabadb(unpublished)c2020 axiv, 48 p.b: ill.c; 30 cm.e+CD aSubmitted in fulfillment of the requirements for the degree of Master of Philosophy in Physics to the Department of Basic Sciences. aIncludes bibliographical references aThesis supervisor: Dr. Sikander Azam  aThesis (M.Phil)--Riphah International University, 2020 aEnglish aPhysicsvDensity function theoryvMagnetic propertiesvGaussian functionvDielectric functionvPerovskitevDBSvFEAS