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In Situ Initial Growth Studies of SrTiO3 on SrTiO3 by Time Resolved High Pressure RHEED

Published online by Cambridge University Press:  15 February 2011

Gertjan Koster ,
Guus J.H.M. Rijnders ,
Dave H.A. Blank  and
Horst Rogalla
Gertjan Koster
Affiliation:
Department of Applied Physics, Low Temperature Division, University of Twente, PO box 217, 7500 AE, Enschede, The Netherlands, [email protected]
Guus J.H.M. Rijnders
Affiliation:
Department of Applied Physics, Low Temperature Division, University of Twente, PO box 217, 7500 AE, Enschede, The Netherlands, [email protected]
Dave H.A. Blank
Affiliation:
Department of Applied Physics, Low Temperature Division, University of Twente, PO box 217, 7500 AE, Enschede, The Netherlands, [email protected]
Horst Rogalla
Affiliation:
Department of Applied Physics, Low Temperature Division, University of Twente, PO box 217, 7500 AE, Enschede, The Netherlands, [email protected]
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Abstract

The initial growth of pulsed laser deposited SrTiO3 on SrTiO3 has been studied using high pressure Reflection High Energy Electron Diffraction (RHEED) and Atomic Force Microscopy (AFM). For this, we developed a Pulsed Laser Deposition (PLD)-RHEED system, with the possibility to study the growth and to monitor the growth rates, in situ, at typical PLD pressures (10-50 Pa). Using perfect single crystal SrTiO3 substrate surfaces, we observe true 2D intensity oscillations at different temperatures. Simultaneously, information on the diffusion of the deposited material on the surface could be extracted from the relaxation of the intensity after each laser pulse. The characteristic times depend on pressure and temperature as well as the 2D coverage during growth.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 526: Symposium Y – Advances in Laser Ablation of Materials , 1998 , 33
Copyright
Copyright © Materials Research Society 1998

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