J4 ›› 2010, Vol. 27 ›› Issue (3): 351-355.

• Laser Applications • Previous Articles     Next Articles

Laser-induced thermoelectric voltage effect of Sr2FeMoO6 film

TAO Ru-Hua1,2 , ZHANG Yu-Liang1,2 , DONG Wei-Wei1,2 , DENG Zan-Hong1,2 , WANG Bo3, FANG Xiao-Dong1,2   

  1. 1 AnHui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China; 2 Key Lab of Novel Thin Film Solar Cells, Chinese Academy of Sciences, Hefei 230031, China; 3 Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China)
  • Received:2009-11-03 Revised:2009-09-11 Published:2010-05-28 Online:2010-05-11

Abstract:

Sr2FeMoO6 film was grown on vicinal-cut SrTiO3 (100) substrate by pulsed laser deposition method. The laser-induced thermoelectric voltage (LITV) was observed when the film was irradiated by visible and infrared pulsed laser. It was found that the maximal peak voltages were 0.9V and 0.8V when the film was irradiated by the laser of 1064nm and 532nm wavelength,respectively. The intensity of the LITV signals changed linearly with the pulse energy, which can be used as laser energy/power meters with high sensitivity. It was also found the signal polarity was reversed when the sample was irradiated through the substrate rather than at the air/film interface. Anisotropy Seebeck effect is proposed to cause the lateral voltages.

Key words: thin films∣LITV∣pulsed laser deposition∣Sr2FeMoO6∣Seebeck effect