Open AccessPhotoluminescence and piezoelectricity investigation of La1.98Nd0.02Ti2O7, Sm1.98Ce0.02Ti2O7 and Er1.98Gd0.02Ti2O7 multifunctional materials
Author(s) -
Esra Öztürk,
Ebru Sarılmaz
Publication year - 2019
Publication title -
materials science poland
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 32
eISSN - 2083-1331
pISSN - 2083-134X
DOI - 10.2478/msp-2019-0076
Subject(s) - photoluminescence , materials science , analytical chemistry (journal) , curie temperature , luminescence , differential thermal analysis , doping , dielectric , scanning electron microscope , thermogravimetric analysis , mineralogy , diffraction , condensed matter physics , optics , optoelectronics , chemistry , ferromagnetism , physics , composite material , chromatography , organic chemistry
Nd 3+ doped La 2 Ti 2 O 7 , Ce 4+ doped Sm 2 Ti 2 O 7 and Gd 3+ doped Er 2 Ti 2 O 7 have been synthesized at different reaction temperatures using solid state reaction method, and characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), differential thermal analysis (DTA), thermogravimetric analysis (TG). Excitation spectra, emission spectra and decay time curves of the samples were investigated by photoluminescence spectrophotometer (PL) and typical transitions of rare earth ions were observed. Dielectric properties, piezoelectric properties and Curie temperature of the obtained luminescent materials were measured for electrical characterization. The results showed that all materials have both photoluminescent and piezoelectric properties and show high Curie temperature.