Photoferroelectrics that involve strong light-matter coupling are regarded as promising candidates for realizing bulk photovoltaic and photoelectric effects via light absorption. Nonetheless, understanding the photoresponse mechanism or modulation of performance from a microscopic point of view is scarcely explored through quantification of macroscopic properties. Herein, we design a model material, Gd-doped (KNa)NbO ferroelectric-transparent ceramics, and present an advantageous strategy to enhance the optoelectronic coupling through joint modulations of lattice distortion and oxygen vacancies, along with inner defects and ferroelectric domains.
View Article and Find Full Text PDFIn pulse power systems, multilayer ceramic capacitors (MLCCs) encounter significant challenges due to the heightened loading electric field (E), which can lead to fatigue damage and ultrasonic concussion caused by electrostrictive strain. To address these issues, an innovative strategy focused on achieving an ultra-weak polarization-strain coupling effect is proposed, which effectively reduces strain in MLCCs. Remarkably, an ultra-low electrostrictive coefficient (Q) of 0.
View Article and Find Full Text PDFBaBiNbO (BBN) based oxide-ion conductors have great potential for application in intermediate-temperature solid oxide fuel cells. In this work, electrical property enhancement is achieved by Sr ion doping and sintering process improvement. The BaBiSrNbO samples are prepared by the traditional solid-state reaction to investigate their electrical properties and oxygen relaxation behavior.
View Article and Find Full Text PDFA short discussion on the structure of H2TiO3 presented in the article entitled Lithium recovery from salt lake brine by H2TiO3 (R. Chitrakar, Y. Makita, K.
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