Enhanced piezoelectric and photochromic properties of Sm3+/Sr2+ co-doped K0.52Na0.48NbO3 ceramics in combination with luminescence

IF 5.8 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society Pub Date : 2025-03-20 DOI:10.1016/j.jeurceramsoc.2025.117387

J.W. Seo, S.W. Wi, Y.S. Lee, Jin-Seok Chung

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Abstract

Sm/Sr co-doped K_0.52Na_0.48NbO₃ (KNN-Sm-xSr) has been examined as an innovative multifunctional ferroelectric photochromic material that simultaneously exhibits piezoelectric, photochromic (PC), and photoluminescence (PL) properties. Sr/Sm co-doping led to an increase in the piezoelectric coefficient (d₃₃) from 80 (pure KNN) to 107 pC/N (x = 0.005), induced by introduction of the polymorphic phase boundary at room temperature. In addition, the coloration contrast significantly increases under near-ultraviolet irradiation. This PC behavior resulted in improved modulation of PL intensities, reaching up to 75 % after 16 min of 380 nm irradiation. Furthermore, the reduction in PL was repeatedly recovered by thermal treatment. These results highlight the promising prospects of KNN-Sm-xSr as a versatile material for applications requiring simultaneous control of piezoelectric, PL, and PC functionalities.

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Sm3+/Sr2+共掺杂K0.52Na0.48NbO3陶瓷的压电和光致变色性能

Sm/Sr共掺杂K0.52Na0.48NbO3 （KNN-Sm-xSr）作为一种创新的多功能铁电光致变色材料，同时具有压电、光致变色（PC）和光致发光（PL）的特性。Sr/Sm共掺杂导致室温下引入多晶相边界导致压电系数（d33）从80（纯KNN）增加到107 pC/N （x = 0.005）。此外，在近紫外照射下，显色对比度显著增加。这种PC行为改善了PL强度的调制，在380 nm照射16 min后达到75 %。此外，通过热处理可以反复恢复PL的降低。这些结果突出了KNN-Sm-xSr作为一种需要同时控制压电、PL和PC功能的通用材料的前景。

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来源期刊

Journal of The European Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

10.70

自引率

12.30%

发文量

863

审稿时长

35 days

期刊介绍： The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.