Raman Spectra Study of K0.5Na0.5NbO3 Ferroelectric Thin Films

被引：45

作者：

Ahn, Chang Won ^{[1
]}

Hwang, Hak-In ^{[1
]}

Lee, Kwang Sei ^{[2
]}

Jin, Byung Moon ^{[3
]}

Park, Sungmin ^{[4
]}

Park, Gwangseo ^{[4
]}

Yoon, Doohee ^{[4
]}

Cheong, Hyeonsik ^{[4
]}

Lee, Hai Joon ^{[5
]}

Kim, Ill Won ^{[5
]}

机构：

[1] KETI, Convergence Components R&D Div, Songnam 463816, South Korea

[2] Inje Univ, Sch Comp Aided Sci, Kimhae 621749, South Korea

[3] Dong Eui Univ, Dept Phys, Pusan 614714, South Korea

[4] Sokang Univ, Dept Phys, Seoul 100611, South Korea

[5] Univ Ulsan, Dept Phys, Ulsan 680749, South Korea

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2010年 / 49卷 / 09期

关键词：

NIOBATES;

D O I：

10.1143/JJAP.49.095801

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have fabricated K0.5Na0.5NbO3 (KNN) thin films on Pt substrates by a chemical solution deposition method and investigated the effect of K and Na excess (0-30 mol %) for KNN thin film. The KNN film with 20 mol% excess K and Na was an optimized KNN perovskite phase. From the Raman spectra, a change in the scattering mode was observed due to the chemical composition fluctuations of the excess K and Na. The peak of the (v(1) + v(5)) internal vibrational mode in the NbO6 octahedra was split into two vibration modes which were shifted toward lower or higher wavenumbers depending on the K and Na cation deficiencies or redundancies. (C) 2010 The Japan Society of Applied Physics

引用

页数：4

共 50 条

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