[en] The purpose of this work is to obtain a microelectronic component by the mean of a laser treatment. Our choice concerned on the piezoelectric ceramic barium titanate BaTiO3. The first step of this study was to prepare and optimise new kind of inks named composite inks consisted of a mixture of a BaTiO3 powder (nanometer-size or micrometer-size particles) and a 0.6M BaTiO3 sol organic vehicle. The thick films were prepared on alumina substrates with the as-obtained inks by two techniques: screen printing and spin coating. For dielectric, ferroelectric and piezoelectric properties measurements, two kind of bottom electrode have been investigated: the first one is a silver electrode deposited by spin coating and the second one is a platinum electrode deposited by CVD. In a second step, the thick films were sintered by a laser treatment. The influence of laser parameters (power, spot speed and vectorisation step of the scan lines) on the as-obtained sintered thick films was investigated by several techniques (XRD and SEM). Independently of the used deposit technique or the powder particle size distribution, a relatively good densification ratio of the films was obtained. Unfortunately, melting and diffusion of the bottom electrode after the laser treatment didn't permit any polarisation and thus any characterisation. The next step of this work will be to prevent the electrode diffusion by an adjustment of the selective laser sintering parameters and to obtain dielectric, ferroelectric and piezoelectric properties of BaTiO3 thick films.
