Epitaxial-like thin films of La5Ca9Cu24O41 grown on MgO and SrTiO3 substrates using PLD.

Maria Pervolaraki 1Ioannis Giapintzakis 1Gabriel Socol 2Nicolaie Stefan 2Felix Sima 2Carmen G. Ristoscu 2Ion Mihailescu 2Aurel M. Vlaicu 3Romuald Saint-Martin 4Alexandre Revcolevschi 4

1. University of Cyprus (UCY), 75 Kallipoleos Avenue, Nicosia 1678, Cyprus
2. National Institute for Lasers, Plasma and Radiation Physics, 111 Atomistilor Street, Bucharest- Magurele 77125, Romania
3. National Institute of Materials Physics, 105 Atomistilor Street, Bucharest- Magurele 77125, Romania
4. Laboratoire de Physico-Chimie de l'Etat Solide, Université Paris-Sud, Orsay 91405, France

Abstract

Thermal management in electronic devices remains a challenge to this day. Materials exhibiting high thermal conductivity and still being electrical insulators are desired. Single crystals of low-dimensional quantum cuprate oxides have shown high magnetic thermal conductivity at room temperature predominately in one dimension [1]. Thin films of these materials are needed for various applications. To this end, we have been investigating the growth of La5Ca9Cu24O41 thin films on various substrates. In this work we will present results related to the fabrication, morphological and structural characterization of these films.

Epitaxial-like films of La5Ca9Cu24O41 were fabricated on MgO and SrTiO3  single crystal substrates using pulsed laser deposition (PLD) at 248 nm. The target of the exotic complex oxide was ablated at a fluence of 2J/cm2 and 10 Hz. The depositions took place at various substrate temperatures up to 800ºC and in oxygen atmosphere. The effect of substrate temperature on the quality of the thin films will be discussed.

[1] C. Hess, Eur. Phys. J. Special Topics 151, 73-83 (2007)

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Presentation: Oral at E-MRS Fall Meeting 2008, Symposium I, by Maria Pervolaraki
See On-line Journal of E-MRS Fall Meeting 2008

Submitted: 2008-05-12 18:28
Revised:   2009-06-07 00:48
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