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

页码：616 / 617

页数：2