中国物理B ›› 2010, Vol. 19 ›› Issue (10): 107203-107203.doi: 10.1088/1674-1056/19/10/107203

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The transverse laser induced thermoelectric voltages in step flow growth (1-x)Pb(Mg1/3Nb2/3)O3xPbTiO3 thin films

尚杰1, 张辉1, 李勇1, 曹明刚1, 张鹏翔2   

  1. (1)Institute of Advanced Materials for Photoelectronics, Kunming University of Science and Technology, Kunming 650051, China; (2)Institute of Advanced Materials for Photoelectronics, Kunming University of Science and Technology, Kunming 650051, China; MPI, FKF, Stuttgart D-70569, Germany
  • 收稿日期:2009-11-30 修回日期:2010-04-23 出版日期:2010-10-15 发布日期:2010-10-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 10274026).

The transverse laser induced thermoelectric voltages in step flow growth (1-x)Pb(Mg1/3Nb2/3)O3xPbTiO3 thin films

Shang Jie(尚杰)a), Zhang Hui(张辉)a), Li Yong(李勇)a), Cao Ming-Gang(曹明刚)a), and Zhang Peng-Xiang(张鹏翔)a)b)†   

  1. a Institute of Advanced Materials for Photoelectronics, Kunming University of Science and Technology, Kunming 650051, China; MPI, FKF, Stuttgart D-70569, Germany
  • Received:2009-11-30 Revised:2010-04-23 Online:2010-10-15 Published:2010-10-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 10274026).

摘要: This paper reports that the transverse laser induced thermoelectric voltages (LITV) are observed for the first time in the step flow growth (1-x)Pb(Mg1/3Nb2/3)O3--xPbTiO3 (PMN--PT, x=0.20, 0.33, 0.50) thin films deposited on vicinal-cut strontium titanate single crystal substrates. Because lead magnesium niobate-lead titanate is a solid solution of lead magnesium niobate (PMN) and lead titanate (PT), there are two types of signals. One is wide with a time response of a microsecond, and the other superimposed with the wide signal is narrow with a time response of a nanosecond. The transverse LITV signals depend on the ratio of PMN to PT drastically. Under the irradiation of 28-ns pulsed KrF excimer laser with the 248-nm wavelength,the largest induced voltage is observed in the 0.50Pb(Mg1/3Nb2/3)O3--0.50 PbTiO3 films. Moreover, the effects of film thickness, substrates, and tilt angles of substrates are also investigated.

Abstract: This paper reports that the transverse laser induced thermoelectric voltages (LITV) are observed for the first time in the step flow growth (1-x)Pb(Mg1/3Nb2/3)O3xPbTiO3 (PMN–PT, x=0.20, 0.33, 0.50) thin films deposited on vicinal-cut strontium titanate single crystal substrates. Because lead magnesium niobate-lead titanate is a solid solution of lead magnesium niobate (PMN) and lead titanate (PT), there are two types of signals. One is wide with a time response of a microsecond, and the other superimposed with the wide signal is narrow with a time response of a nanosecond. The transverse LITV signals depend on the ratio of PMN to PT drastically. Under the irradiation of 28-ns pulsed KrF excimer laser with the 248-nm wavelength,the largest induced voltage is observed in the 0.50Pb(Mg1/3Nb2/3)O3–0.50 PbTiO3 films. Moreover, the effects of film thickness, substrates, and tilt angles of substrates are also investigated.

Key words: laser induced thermoelectric voltage, (1-x)Pb(Mg1/3Nb2/3)O3xPbTiO3 films, anisotropic Seebeck effect

中图分类号:  (Laser applications)

  • 42.62.-b
68.55.-a (Thin film structure and morphology) 68.55.A- (Nucleation and growth) 72.20.Pa (Thermoelectric and thermomagnetic effects) 73.50.Lw (Thermoelectric effects) 81.15.Fg (Pulsed laser ablation deposition)