Author(s): Zhou, PY (Zhou, Peng-Yu); Dou, XM (Dou, Xiu-Ming); Sun, BQ (Sun, Bao-Quan); Dou, RQ (Dou, Ren-Qin); Zhang, QL (Zhang, Qing-Li); Liu, B (Liu, Bao); Hou, PG (Hou, Pu-Geng); Chi, KL (Chi, Kai-Lin); Ding, K (Ding, Kun)

Source: CHINESE PHYSICS B Volume: 31 Issue: 1 Article Number: 017101 DOI: 10.1088/1674-1056/ac0526 Published: JAN 1 2022

Abstract: Luminescent properties of Tm3+-doped GdYTaO4 are studied for exploring their potential applications in temperature and pressure sensing. Two main emission peaks from H-3(4) -> H-3(6) transition of Tm3+ are investigated. Intensity ratio between the two peaks evolves exponentially with temperature and has a highest sensitivity of 0.014 K-1 at 32 K. The energy difference between the two peaks increases linearly with pressure increasing at a rate of 0.38 meV/GPa. Intensity ratio between the two peaks and their emission lifetimes are also analyzed for discussing the pressure-induced variation of the sample structure. Moreover, Raman spectra recorded under high pressures indicate an isostructural phase transition of GdYTaO4 occurring at 4.46 GPa.

Accession Number: WOS:000740829200001

ISSN: 1674-1056

eISSN: 2058-3834

Full Text: https://iopscience.iop.org/article/10.1088/1674-1056/ac0526