The effect of laser pulse synchronicity on thin garnet films fabricated by dual-beam combinatorial pulsed laser deposition

Sloyan, K.A., May-Smith, T.C. and Eason, R.W. (2009) The effect of laser pulse synchronicity on thin garnet films fabricated by dual-beam combinatorial pulsed laser deposition. E-MRS 2009 Spring Meeting, , Strasbourg, France. 08 - 12 Jun 2009.

Abstract

Pulsed Laser Deposition (PLD) is a powerful tool in the fabrication of thin films. Combinatorial PLD extends the basic PLD set-up to include multiple lasers and targets, and could prove highly effective in the fabrication of materials and structures not possible with conventional PLD. However, this extension introduces additional parameters that must be understood before the full potential can be realised. One such parameter is the synchronicity of the laser pulses and consequent plasma plumes. substrates. A delay varying between 3.2µs and 50ms was introduced between the two laser pulses for a range of films grown. Similar films were also produced using pulses synchronised to within around 10ns. X-ray diffraction analysis revealed two distinct regions of lattice constant around 0.3Å apart for the different pulse delay values, with a transition region between 150 and 333µs. Energy dispersive X-ray analysis revealed changes in the elemental composition of the films; these did not, however, unambiguously correspond to the changes in lattice constant. Further investigations are being undertaken, and all results will be reported along with discussions of a possible mechanism.

This record has no associated files available for download.

Contributors

Author: R.W. Eason

Download statistics