Influence of pulse laser energy on laser-induced voltage in La 2/3 Ca 1/3 MnO 3 :Ag 0.04 films

With various pulse laser energy ( E pulse ), La 2/3 Ca 1/3 MnO 3 :Ag x [La 1− x Ca x MnO 3 (LCMO):Ag x , x = 0.04, wt%] films were prepared on vicinal cut LaAlO 3 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 (Δ S ) 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.