Unusually Stable Ferroelectric 180° a-a Nanostripe and Nanoneedle Domains in Thin Films Prepared from a Bulk Single Crystal of BaTiO3 with FIB: TEM Observations and Phase-Field Simulations

摘要：

Unusually stable ferroelectric 180° a-a nanostripe domain structure in a thin (≤100 nm) film prepared from a bulk single crystal of BaTiO3 with focused-ion beam (FIB) was observed by transmission electron microscopy (TEM). The domain consists of alternate sequences of narrow and wide anti-parallel domains. High-magnification images of a stable 180° nanoneedle domain, with a sharp tip penetrating into the nanostripe domains, were also obtained. Twodimensional phase-field simulations based on TDGL equations suggest that such a domain structure is stabilized by an in-plane anisotropic stress and an anisotropic mechanical boundary condition of the thin film prepared with FIB.

作者: Takao Matsumoto Masakuni Okamoto

作者单位: Central Research Laboratory,Hitachi,Ltd.,1-280 Higashi-Koigakubo,Kokubunji-shi,Tokyo 185-8601,Japan Mechanical Engineering Research Laboratory,Hitachi,Ltd.,832-2,Horiguchi,Hitachi-Naka,Ibaraki 312-003

会议类型: 国际会议

会议名称: 2009 The 18th IEEE International Symposium on Applications of Ferroelectrics(2009年国际铁电学暨IEEE国际铁电应用联合会议)

会议地点: 西安

会议语种:英文

页码: 51-54

在线出版日期: 2009-08-23（万方平台首次上网日期，不代表论文的发表时间）