Atomic force microscopy surface analysis of layered perovskite La2Ti2O7 particles grown by molten flux method

被引：12

作者：

Orum, Aslihan ^{[1
]}

Takatori, Kazumasa ^{[2
]}

Hori, Shigeo ^{[2
]}

Ikeda, Tomiko ^{[1
]}

Yoshimura, Masamichi ^{[1
]}

Tani, Toshihiko ^{[1
,2
]}

机构：

[1] Toyota Technol Inst, Nagoya, Aichi 4688511, Japan

[2] Toyota Cent Res & Dev Labs Inc, Nagakute, Aichi 4801192, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2016年 / 55卷 / 08期

关键词：

TEMPLATED GRAIN-GROWTH; SALT SYNTHESIS; CERAMICS; CRYSTALS; MORPHOLOGY;

D O I：

10.7567/JJAP.55.08NB08

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A Rectangular platelike particles of La2Ti2O7, a layered perovskite, were synthesized in KCl, NaCl, and LiCl by the molten flux method. The formation mechanism of the equilibrium shape in these alkali chloride fluxes was discussed in terms of the surface and interfacial energies of crystallographic planes. The atomic force microscopy (AFM) observations revealed that the developed plane of the platelike particles is along the interlayers in the {110}-type layered crystal structure, and is considered to represent the lowest surface energy plane in which strong, periodic Ti-O bond chains terminate. Herein, for the first time, a growth mechanism for La2Ti2O7 particles is proposed and discussed. Triangular prism structures along the c-axis were observed on the developed planes of KCl-grown particles whereas no such structures were found on those of LiCl-grown ones. AFM measurements suggest that the prism facets are {210}-La2Ti2O7, which results in lower interfacial energy within KCl. (C) 2016 The Japan Society of Applied Physics.

引用

页数：7

共 30 条

[1] Growth and characterization of ferroelectric SrBi2Ta2O9 single crystals via high-temperature self-flux solution method [J].