Non-contact localized probing of ferroelectric phase transitions in Li+/Er3+:BaTiO3 ceramics using fluorescence abnormalities

Jiaming Li, Enwei Sun, Lingli Tang, Yuan Zhou, Leipeng Li, Jipeng Miao, Zhiguo Zhang, Wenwu Cao

Research output: Contribution to journalArticlepeer-review

Abstract

Fluorescence abnormalities associated with the ferroelectric phase transition of Li+/Er3+:BaTiO3 (BLET) ceramics were studied based on photoluminescence (PL) spectra. Sharp changes were found in the integrated intensities, peak intensities, and fluorescence intensity ratios of both upconversion spectra (2H11/2/4S3/2-4I15/2) and downconversion infrared spectra (4I13/2-4I15/2) around the ferroelectric-paraelectric phase transition temperature in BLET ceramics under the excitation of a 980 nm laser. All changes happened within the temperature interval of 126 °C-130 °C. The relative changing rate (RCR) was adopted to quantitatively describe this structure-sensitive PL. For the system under study, the maximum RCR occurs for the PL peak intensity at 542.7 nm.

Original languageEnglish (US)
Article number042901
JournalApplied Physics Letters
Volume116
Issue number4
DOIs
StatePublished - Jan 27 2020

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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