The growth and conductivity of CaCuO2 epitaxial thin films

被引：7
|
作者：
Ovsyannikov, GA
Denisuk, SA
Bdikin, IK
Ivanov, ZG
Claeson, T
机构：
[1] RAS, Inst Radio Engn & Elect, Moscow 125009, Russia
[2] RAS, Russian Inst Solid State, Moscow 117901, Russia
[3] Chalmers Univ Technol, S-41296 Gothenburg, Sweden
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2004年 / 408卷
关键词：
epitaxial thin films; laser ablation; rocking curve; resistivity;
D O I：
10.1016/j.physc.2004.03.050
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Growth, structure and conductivity of epitaxial thin films of CaCuO2 (CCO) on SrTiO3, LaAlO3 and NdGaO3 substrates were investigated. The films were deposited by pulsed laser ablation from a single stoichiometric target at a pressure of 0.3 mbar and temperatures higher than 700 degreesC. X-ray diffraction reveals that films on (1 1 0)NdGaO3 substrates are single crystals of high quality without twinning and with extremely narrow (less then 0.05degrees) rocking curves. An expansion of the c-axis lattice constant is observed as Sr replaces Ca in CCO films. Transport measurements show that CCO films have a hopping conductivity for all films deposited on all the substrates with a resistivity within the range 10(-1)-10(4) Omega cm. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：616 / 617
页数：2
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