Solid-phase epitaxial film growth and optical properties of a ferroelectric oxide, Sr2Nb2O7

被引：12

作者：

Nezu, Yukio ^{[1
]}

Zhang, Yu-Qiao ^{[1
]}

Chen, Chunlin ^{[2
]}

Ikuhara, Yuichi ^{[2
,3
]}

Ohta, Hiromichi ^{[4
]}

机构：

[1] Hokkaido Univ, Grad Sch Informat Sci & Technol, Kita Ku, N14W9, Sapporo, Hokkaido 0600814, Japan

[2] Tohoku Univ, WPI Adv Inst Mat Res, Aoba Ku, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan

[3] Univ Tokyo, Inst Engn Innovat, Bunkyo Ku, 2-11-16 Yayoi, Tokyo 1138656, Japan

[4] Hokkaido Univ, Res Inst Elect Sci, Kita Ku, N20W10, Sapporo, Hokkaido 0010020, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2017年 / 122卷 / 13期

基金：

日本学术振兴会;

关键词：

HOMOLOGOUS SERIES; SINGLE-CRYSTAL; THIN-FILMS; O-2; NB;

D O I：

10.1063/1.4997813

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

High-quality epitaxial films of a ferroelectric oxide Sr2Nb2O7 were successfully fabricated by solid phase epitaxy (SPE) on (110) LaAlO3 single crystal substrates. In the SPE method, amorphous Sr-Nb-O films are first deposited by pulsed laser deposition at room temperature and then annealed in vacuum at elevated temperatures, resulting in the crystallization of Sr2Nb2O7 with highly ordered atomic arrangement and an atomically flat surface. The refractive index of the resultant film was 2.1, indicating that the dielectric permittivity of the film was in between 20 and 80, which corresponds well with that of single crystal Sr2Nb2O7, demonstrating the effectiveness of the SPE method for the fabrication of high-quality epitaxial films of Sr2Nb2O7. Published by AIP Publishing.

引用

页数：5

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