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Er-doped 0.96(K0.48Na0.52)(Nb0.965Sb0.035)O3-0.04(Bi0.5Na0.5)ZrO3 Multifunctional Ceramics with Good Temperature Stability.
- Source :
- Journal of Electronic Materials; Sep2024, Vol. 53 Issue 9, p5663-5670, 8p
- Publication Year :
- 2024
-
Abstract
- Lead-free 0.96(K<subscript>0.48</subscript>Na<subscript>0.52</subscript>)(Nb<subscript>0.965</subscript>Sb<subscript>0.035−x</subscript>Er<subscript>x</subscript>)O<subscript>3</subscript>-0.04(Bi<subscript>0.5</subscript>Na<subscript>0.5</subscript>)ZrO<subscript>3</subscript> (KNNS<subscript>0.035−x</subscript>E<subscript>x</subscript>-BNZ) multifunctional ceramics were prepared by the conventional solid-state reaction method combined with the two-step sintering method. The results show that the ceramics doped with a moderate amount of Er<superscript>3+</superscript> show good piezoelectric properties and excellent temperature stability, while displaying bright up-conversion photoluminescence. Er<superscript>3+</superscript>-doping shifts the orthorhombic–tetragonal phase transition temperature (T<subscript>O-T</subscript>) down to below room temperature and enhances the temperature stability of the ceramics. For a 0.2 mol%Er<superscript>3+</superscript>-doped sample, the room-temperature piezoelectric constant d<subscript>33</subscript> reached 343 pC/N. The sample shows good resistance to thermal depoling as noted that the d<subscript>33</subscript> value remaining at more than 95% of that at room temperature when the temperature was increased to 230 °C. Relying on the luminescence behavior of rare earth Er<superscript>3+</superscript> ions, Er<superscript>3+</superscript>-doped samples exhibit a strong photoluminescence with a bright green up-conversion emission under excitation at 980 nm. Two green emissions, at 525 nm and 550 nm, corresponded to the transitions from <superscript>2</superscript>H<subscript>11/2</subscript> → <superscript>4</superscript>I<subscript>15/2</subscript> to <superscript>4</superscript>S<subscript>3/2</subscript> → <superscript>4</superscript>I<subscript>15/2</subscript>, and a weak red emission at 660 nm was assigned to the <superscript>4</superscript>F<subscript>9/2</subscript> → <superscript>4</superscript>I<subscript>15/2</subscript> transition obtained under the excitation of a 980-nm laser. The multifunctional properties in the Er-doped samples make them promising for multifunctional device applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03615235
- Volume :
- 53
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Journal of Electronic Materials
- Publication Type :
- Academic Journal
- Accession number :
- 178774751
- Full Text :
- https://doi.org/10.1007/s11664-024-11163-0