Improving physical properties of functional materials by laser irradiation

Abstract

In this paper, the progress on improving physical properties of functional materials by laser irradiation is reported and discussed. Sintered with a CO2 laser, a novel Ta2O5-based ceramics with maximum κ of 450 can be obtained at ambient conditions. The electrical conductivity of PCDF induced by excimer laser irradiation was found to increase from 10−13 Ω−1·cm−1 to 10−4 Ω−1·cm−1. Significant improvement in the magneto transport properties of La0.67Ca0.33MnO3 thin film irradiated by CO2 laser in air can be obtained. Irradiated with a CO2 laser, the polarization and piezoelectric constants d15 of Ba0.5Sr1.5Na0.6K0.4Nb5O15 ceramic was found to increase to 120 pC/N. Based upon the characterization of the samples, the phase, micro-structure, and the mechanism of property modification in laser irradiated samples were analyzed.In this paper, the progress on improving physical properties of functional materials by laser irradiation is reported and discussed. Sintered with a CO2 laser, a novel Ta2O5-based ceramics with maximum κ of 450 can be obtained at ambient conditions. The electrical conductivity of PCDF induced by excimer laser irradiation was found to increase from 10−13 Ω−1·cm−1 to 10−4 Ω−1·cm−1. Significant improvement in the magneto transport properties of La0.67Ca0.33MnO3 thin film irradiated by CO2 laser in air can be obtained. Irradiated with a CO2 laser, the polarization and piezoelectric constants d15 of Ba0.5Sr1.5Na0.6K0.4Nb5O15 ceramic was found to increase to 120 pC/N. Based upon the characterization of the samples, the phase, micro-structure, and the mechanism of property modification in laser irradiated samples were analyzed.