Laser-induced voltage (LIV) enhancement of La2/3Sr1/3MnO3 films with Ag addition

• Published in: Applied physics. A, Materials science & processing Vol. 115; no. 4; pp. 1371 - 1374
• Main Authors: Liu, Xiang, Yan, Yi-zhi, Chen, Qing-ming, Zhang, Hui, Yin, Xue-peng
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.06.2014
• Subjects: Characterization and Evaluation of Materials; Condensed Matter Physics; Machines; Manufacturing; Nanotechnology; Optical and Electronic Materials; Physics; Physics and Astronomy; Processes; Surfaces and Interfaces; Thin Films; Thermal Heat Conductivity; Manganite; Seebeck Coefficient; Double Exchange Interaction; LSMO Film
• ISSN: 0947-8396; 1432-0630
• DOI: 10.1007/s00339-013-8013-8

La 2/3 Sr 1/3 MnO 3 :Ag x (LSMO:Ag x , x =0, 0.04, 0.08, 0.10, 0.20, 0.30) films were grown on vicinal cut LaAlO 3 (LAO) substrates by pulsed laser deposition technique (PLD). It is found that laser-induced voltage (LIV) of LSMO:Ag x films is improved and enhanced by Ag addition. With x increasing, figure of merit ( F m ) and anisotropic Seebeck coefficient (Δ S ) of LSMO:Ag x ( x =0.08) films reach the maximum values of 28.25 mV/ns and 0.38 μV/K, respectively. The results suggest that the LIV enhancement of LSMO:Ag x films is due to the anisotropy of the Seebeck tensor, which is produced by long range cooperative Jahn–Teller distortions with Ag addition.