通过化学共沉淀法制备了 La0.67Sr0.33MnO3：Ag0.08(LSMO：Ag0.08)多晶材料，然后采用脉冲激光沉积(PLD)技术在LaAlO3(LAO)倾斜衬底上制备了LSMO：Ag0.08薄膜。研究了衬底温度和生长氧压对薄膜结构、电输运特性及激光感生电压(LIV)效应的影响。结果表明：当衬底温度为790℃、生长氧压为45 Pa时，薄膜具有最大峰值电压(Up)、优值(Fm)和各向异性Seebeck系数(?S)；在优化的衬底温度和生长氧压条件下，长程Jahn-Teller协变引起?S数值提高，这是LIV信号增强的主要原因。
La0.67Sr0.33MnO3:Ag0.08 (LSMO:Ag0.08) polycrystalline ceramics were prepared by chemical co-precipitation method, and then La0.67Sr0.33MnO3:Ag0.08 thin films were prepared on vicinal cut LaAlO3 (LAO) substrates by pulsed laser deposition (PLD) technique. Effects of growth temperature and oxygen pressure on structure, electrical transport properties and laser-induced voltage (LIV) effect were investigated. The results show that the maximum LIV peak (Up), the figure of merit (Fm) and anisotropy Seebeck coefficient (?S) are obtained for LSMO:Ag0.08 thin films when growth temperature and oxygen pressure are 790℃and 45 Pa, respectively. The LIV enhancement of LSMO:Ag0.08 thin films is due to the anisotropy of the Seebeck coefficient, which is produced by long range cooperative Jahn-Teller distortions under optimal growth temperature and oxygen pressure conditions.
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