Growth and Transport Properties of Sr-Doped Lanthanum Titanate Thin Films on LaAlO3
| Periodical | Materials Science Forum (Volume 700) |
|---|---|
| Main Theme | Advanced Materials and Nanotechnology |
| Edited by | B. J. Ruck and T. Kemmitt |
| Pages | 41-44 |
| DOI | 10.4028/www.scientific.net/MSF.700.41 |
| Citation | Huang Huei Sung et al., 2011, Materials Science Forum, 700, 41 |
| Online since | September, 2011 |
| Authors | Huang Huei Sung, Jiun Tzuen Tsai, Cheng Hsueh Lin, Shing Yu Chen, Jung Chuan Fan, Chun Rong Lin |
| Keywords | Antiferromagnetic, SLTO, Small-Polaron Model, Sr-Doped LaTiO3, Thin Film, Transport Property |
| Price | US$ 28,- |
Sr-doped LaTiO3 (SLTO) thin epitaxial films on LaAlO3 (100) have been fabricated by the off-axis rf magnetron co-sputtering system. The dopant Sr2+ ions were expected substituting La3+ ions in the films to introduce the hole carriers. The X-ray diffraction shows that the [001] direction of the SLTO films is perpendicular to the substrate surface. The in-situ grown specimens were measured the temperature dependence of resistivity and the Hall coefficients to study the transport properties. The Hall measurements show that the carrier is electron for Sr-doping over 16%. The temperature dependence of the resistance shows that the n-type films are metallic and deviate from free electron gas model obviously. We found the behaviour could be well described by the small-polaron coherent motion model.
