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http://dx.doi.org/10.4283/JKMS.2011.21.3.093

Growth of La0.35Pr0.35Ca0.3MnO3/LaAlO3 Thin Film using Laser Molecular-Beam Epitaxy and its Magnetic Properties  

Seung, S.K. (Department of Physics, Chungnam National University)
Song, J.H. (Department of Physics, Chungnam National University)
Publication Information
Journal of the Korean Magnetics Society / v.21, no.3, 2011 , pp. 93-98 More about this Journal
Abstract
We successfully grew $La_{0.35}Pr_{0.35}Ca_{0.3}MnO_3$(LPCMO)/$LaAlO_3$(LAO) thin film using Laser Molecular-Beam Epitaxy and studied post-growth annealing effects ($750^{\circ}C$, 5 h) on its crystal structural and magnetic properties. Whereas the single-layered LPCMO and LPCMO/STO superlattice thin films show rough surface before and after the post-growth annealing, LPCMO/LAO superlattice shows a relatively very flat surface even after the post-growth annealing. The enhancement of ferromagnetism of LPCMO/LAO superlattice after the post-growth annealing was remarkable compared to the single-layered LPCMO thin film. The coercive and saturation magnetic field of the single-layed LPCMO thin film were decreased after the post-annealing. However, for LPCMO/LAO superlattice, a same coercive and increased saturation magnetic field were exhibited after post-growth annealing. We suggest that these peculiar observations are originate from the super-structure of LPCMO and LAO.
Keywords
superlattice; manganite; ferromagnetism; $La_{0.35}Pr_{0.35}Ca_{0.3}MnO_3$; $LaAlO_3$;
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