Influence of pulse laser energy on laser-induced voltage in La2/3Ca1/3MnO3:Ag0.04 films

With various pulse laser energy (E _pulse), La_2/3Ca_1/3MnO₃:Ag _x La_1?x Ca _x MnO₃ (LCMO):Ag _x , x = 0.04, wt%] films were prepared on vicinal cut LaAlO₃ substrates by the pulsed laser deposition technique. It is found that laser-induced voltage (LIV) of LCMO:Ag_0.04 films was improved and enhanced by E _pulse. With E _pulse increasing, figure of merit (F _m) and anisotropic Seebeck coefficient (ΔS) of LCMO:Ag_0.04 films reached the maximum value of 109.8 mV/ns and 0.29 μV/K for E _pulse = 300 mJ. The results suggested that the LIV enhancement of LCMO:Ag_0.04 films was due to Seebeck tensor improvement, the high crystallization and oxygen balance in LCMO:Ag_0.04 films.