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Ho‐doped SrBi 2 Nb 2 O 9 multifunctional ceramics with bright green emission and good electrical properties
Author(s) -
Yu Lei,
Hao Jigong,
Xu Zhijun,
Li Wei,
Chu Ruiqing
Publication year - 2017
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201700276
Subject(s) - materials science , curie temperature , doping , analytical chemistry (journal) , excited state , ferroelectricity , ceramic , quenching (fluorescence) , ferroelectric ceramics , mineralogy , optics , fluorescence , optoelectronics , chemistry , condensed matter physics , atomic physics , physics , dielectric , metallurgy , ferromagnetism , chromatography
Ho 3+ ‐doped SrBi 2 Nb 2 O 9 multifunctional ferroelectric ceramics with bright green light emission and good electrical properties were fabricated in this work. Under blue light excitation, samples showed bright green light with two typical emission bands: a strong green emission centered at 545 nm corresponding to the intra f ‐ f transition from the excited 5 S 2 to the ground state 5 I 8 and a relatively weak red emission located 653 nm induced by the 5 F 5 → 5 I 8 transition of Ho 3+ . Due to the concentration quenching effect, the intensity of emission was strongly dependent on the doping concentration. Furthermore, the electrical properties have improved by Ho 3+ doping. At x = 0.004, samples exhibit optimal electrical properties with high Curie temperature ( T c = 441 °C) and large 2 P r and d 33 values (2 P r = 15.54 µC cm −2 , d 33 = 19 pC/N). These results demonstrate that the SBN‐ x Ho ceramics possess excellent multifunctional properties to achieve a variety of applications.