研究Bi0.5Na0.5TiO3-BaTiO3薄膜的取向对功能特性的依赖性

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2025-04-04 DOI:10.1016/j.materresbull.2025.113475

Ilham Hamdi Alaoui , Abdelilah Lahmar , Oumayma Mlida , Freddy Ponchel , Antonio Da Costa , Françoise Le Marrec , Jamal Belhadi , Alexandre Ysebaert , Anna Cantaluppi , Marie-Hélène Chambrier , Rachel Desfeux , Denis Remiens , Anthony Ferri , Nathalie Lemée

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引用次数: 0

摘要

无铅（1-x）Bi0.5Na0.5TiO3 - x BaTiO3（BNTBT）固溶体中的各向异性相界（MPB）成分因其在压电和大功率储能应用中的巨大潜力而吸引了广泛的研究。本文研究了具有 MPB 附近成分的外延 (001) 和 (111) BNTBT 薄膜。由于弱极性相和强极性铁电相共存，两种取向的薄膜都呈现出复杂的畴模式。在 (001) 和 (111) 两种取向的薄膜中都显示出电场诱导的相位切换，以及 (111) BNTBT 薄膜中极性状态的减弱。(111) BNTBT 薄膜中增强的麦角弛豫状态降低了压电响应，提高了储能性能。研究表明，外延对称性工程是改善 BNTBT 薄膜功能特性的组成策略的补充方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Investigating the orientation dependence on functional properties in Bi0.5Na0.5TiO3-BaTiO3 films

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Investigating the orientation dependence on functional properties in Bi0.5Na0.5TiO3-BaTiO3 films

The morphotropic phase boundary (MPB) composition in lead free (1-x) Bi_0.5Na_0.5TiO₃ – x BaTiO₃ (BNTBT) solid solution has attracted extensive research due to its significant potential for piezoelectric and high-power energy storage applications. Here, epitaxial (001) and (111) BNTBT films with composition around the MPB are investigated. A complex domain pattern is evidenced for both film orientation, due to the coexistence of a weak polar phase and a strong polar ferroelectric phase. An electric field induced phase switching is shown in both (001) and (111) oriented film, as well as a weakening of the polar state in the (111) BNTBT film. The enhanced ergodic relaxor state in the (111) BNTBT film gives rise to a reduced piezoelectric response and improved energy storage performances. The epitaxial symmetry engineering is shown to provide a complementary approach to the composition strategy to improve the functional properties in BNTBT films.

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.