Title: FTIR data of β NaY0.78F4:Yb0.2Tm0.02; System 1 EDTA, Experiment 1, SamplesHex,Hex@TiO2Acac & Hex@TiO2Acac 300) Description: FTIR data of β NaY0.78F4:Yb0.2Tm0.02collected on Thermo Scientific Nicolet IS10, synthesized for CORE-SHELL Project through EDTA assisted solvothermal processing, Et:H2O=2:1, FF=60 %, c=0.01 M, 200oC/2h; Re:NaF=1:14, Re:EDTA=1:1,and coated withTiO2-Acac. Data were collected on 04/16/2021 Keywords: Fourier transform infrared spectroscopy (FTIR) / EDTA assisted solvothermal process / NaYF4;Yb,Tm@TiO2-acac / hexagonal FTIR-Samples_Hex_1_Hex_1_TiO2acac-and-Hex_1_TiO2acac_300.tif (31.26Mb) FTIR_Samples_Hex.ods (54.25Kb) FTIR_Samples_Hex.csv (148.6Kb) README-hex.txt ***Column headers and field types*** Wavenumbers x106, cm-1 (number.decimal) Transmittance x106, % (number.decimal) Handle: https://hdl.handle.net/21.15107/rcub_dais_14580