Measuring the viscosity of films by thermomechanical analysis: application to metal organic precursor films of functional oxides

Abstract We have developed a new method to measure the viscosity of micrometric films by thermomechanical analysis with hemispherical probe millimetric diameter. The loading curve (displacement vs. time) recorded as tip crosses whole film at constant load until it touches substrate is fitted theoretical shape that has been obtained after solving problem liquid flow under tip. validated measuring rosin films. It applied analyze thermal evolution unstable appear on Ba propionate, Ce(III) propionate and low-fluorine precursor YBa 2 Cu 3 O 6+x . During pyrolysis last two films, first diminishes due heating then increases solid oxide particles are formed inside liquid.