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Large electrostrictive effect and high optical temperature sensitivity in Er3+-modified (K0.5Na0.5)NbO3-based ferroelectric ceramics.
- Source :
-
Ceramics International . Apr2024:Part B, Vol. 50 Issue 7, p12050-12058. 9p. - Publication Year :
- 2024
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Abstract
- With the rapid development of optoelectronic technology, the realization of multi-functional properties of ferroelectrics has recently become a hot research topic. In the present study, a high electrostrictive effect and excellent photoluminescence properties have been achieved by introducing rare earth Er3+ ions into the high-performance 0.96(K 0.48 Na 0.52)(Nb 0.95 Sb 0.05)O 3 -0.04Bi 0.5 (Na 0.82 K 0.18) 0.5 ZrO 3 (0.96KNNS-0.04BNKZ) ferroelectric ceramic. As a result of the Er3+ doping, the ferroelectric long-range order of 0.96KNNS-0.04BNKZ was disrupted, which led to the formation of polar nanoregions and electrostriction enhancement. The sample that was doped with 0.8 mol% Er3+ ions showed a high electrostrictive strain of ∼0.11 % (at 80 kV/cm), with a large electrostrictive coefficient, Q 33, of 0.033 m4/C2. Q 33 was not sensitive to either a temperature change or field cycling. In addition, the Er3+-modified samples showed a bright up-conversion photoluminescence with a strong green emission, which could be explained by the presence of Er3+ activator ions. Furthermore, an excellent optical temperature performance, with a sensitivity of S = 0.0075 K−1 at 570 K, was achieved for the ceramic that was doped with 0.1 mol% Er3+. This sensitivity was higher than for most rare earth-doped ferroelectric materials. Because of these excellent optical and electrical characteristics, the Er3+-doped 0.96KNNS-0.04BNKZ-based ferroelectrics demonstrated promising prospects for applications in optical-electrically integrated and coupling devices. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02728842
- Volume :
- 50
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Ceramics International
- Publication Type :
- Academic Journal
- Accession number :
- 175569621
- Full Text :
- https://doi.org/10.1016/j.ceramint.2024.01.108