Structural, electrical, and surface characteristics of La0.5Sr0.5CoO3 thin films prepared by pulsed-laser deposition |
| |
Authors: | R.A. Gunasekaran J.D. Pedarnig M. Dinescu |
| |
Affiliation: | Angewandte Physik, Johannes-Kepler Universit?t Linz, A-4040 Linz, Austria, AT
|
| |
Abstract: | A parametric study of the growth of La0.5Sr0.5CoO3 (LSCO) thin films on (100) MgO substrates by pulsed-laser deposition (PLD) is reported. Films are grown under a wide range of substrate temperature (450–800 °C), oxygen pressure (0.1–0.9 mbar), and incident laser fluence (0.8–2.6 J/cm2). The optimum ranges of temperature, oxygen pressure, and laser fluence to produce c-axis oriented films with smooth surface morphology and high metallic conductivity are identified. Films deposited at low temperature (500 °C) and post-annealed in situ at higher temperatures (600–800 °C) are also investigated with respect to their structure, surface morphology, and electrical conductivity. Received: 20 November 1998 / Accepted: 6 July 1999 / Published online: 21 October 1999 |
| |
Keywords: | PACS: 68.55.-a 81.15.Fg 73.61.-r |
本文献已被 SpringerLink 等数据库收录! |
|