Laser Energy Dependent Structure of Pulsed Laser Deposited Barium Dititanate Films

L. Li; Chuan Bin Wang; Qiang Shen; Lian Meng Zhang

doi:10.4028/www.scientific.net/AMR.66.183

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Laser Energy Dependent Structure of Pulsed Laser Deposited Barium Dititanate Films

Abstract:

Barium dititanate (BaTi2O5) films were prepared on MgO (100) substrate by pulsed laser deposition under various laser energy densities. The effect of laser energy on crystallinity, orientation and surface morphology was investigated. The preferred orientation of the as-deposited films changes from (710) to (020) with decreasing laser energy, and the surface morphology is different depending on laser energy too. The b-axis oriented BaTi2O5 film could be obtained at the laser energy density of 2J/cm2, where the film shows a dense surface with an elongated granular texture.