Realizing a ferroelectric state and high pyroelectric performance in antiferroelectric-oxide composites. Issue 28 (2nd July 2020)

• Record Type: Journal Article
• Authors: Li, Ling; Fang, Di; Wang, Rui-Xue; Shen, Meng; Zhang, Haibo; Tang, Yue-Feng; Zhang, Shan-Tao
• Is Part Of: Dalton transactions. Volume 49:Issue 28(2020)
• Page Start: 9728
• Page End: 9734
• Publication Date: 2020-07-02
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d0dt01739f
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : We report a robust room temperature ferroelectric (FE) state in (1 − x )Pb0.99 Nb0.02 [(Zr0.57 Sn0.43 )0.933 Ti0.067 ]0.98 O3 – x ZnO ((1 − x )PNZST– x ZnO) composites, where PNZST shows a predominant antiferroelectric (AFE) nature due to ZnO-induced internal strain. Abstract : We report a robust room temperature ferroelectric (FE) state in (1 − x )Pb0.99 Nb0.02 [(Zr0.57 Sn0.43 )0.933 Ti0.067 ]0.98 O3 – x ZnO ((1 − x )PNZST– x ZnO) composites, where PNZST shows a predominant antiferroelectric (AFE) nature due to ZnO-induced internal strain. Upon heating, a FE-AFE transition occurs and generates high pyroelectric performance. The composite with x = 0.1 shows a peak pyroelectric coefficient of p = 2450.7 × 10 −4 C m −2 K −1 and figures of merit of current responsivity F i = 926.9 × 10 −10 m V −1, voltage responsivity F v = 1334.3 × 10 −2 m 2 C −1, and detectivity F d = 1194.8 × 10 −5 Pa −1/2, which are about two orders of magnitude higher than those of most perovskite pyroelectric oxides. More interestingly, the FE-AFE transition temperature, i.e., the temperature corresponding to peak pyroelectric performance, is tunable in a wide temperature range from 30 °C to 65 °C. This work not only provides a promising material candidate for high performance pyroelectric devices, but also an alternative idea to develop ferroelectric and pyroelectric properties based on antiferroelectric materials.