所属单位：材料科学与工程学院

发表刊物：Journal of Materials Research

关键字：中文关键字：老化，铁电性能，，英文关键字：age；ferroelectric proiperties

摘要：Bismuth-doped (Ba，Ca)TiO3 ceramics (x = 0.10, Bi-BCT) were prepared by a conventional solid-state reaction technique. An abnormal double-like hysteresis polarization–electric (P–E) loop was observed at room temperature for aged Bi-BCT. Raman scattering gives critical evidence for the formation of O vacancies in Bi-BCT. The change from the single P–E loops in the fresh samples to the double loops in the aged samples excludes the existence of a ferroelectric–antiferroelectric transition in Bi-BCT. A reversible domain switching mechanism resulting from a symmetry-conforming shortrange ordering of point defects gives a reasonable explanation for the naturally ageinduced double-like P–E loops in Bi-BCT.

备注：云斯宁

合写作者：XiaoliWang,JingShi,DelongXu

第一作者：云斯宁

论文类型：期刊论文

卷号：卷：24

期号：期：10

页面范围：页：3073-3077

是否译文：否

发表时间：2009-10-01