摘要
The growth conditions of La0.7Ca0.3MnO3(LCMO) epitaxial thin film are investigated.The results indicate that the deposition temperature plays a crucial role on the growth mode of LCMO thin film.There is an optimal deposition temperature,To,for the epitaxial growth of LCMO thin film.Just only at the To,the real epitaxial LCMO thin film can be obtained.When the deposition temperature deviates from the To,the thin film tends to be polycrystalline,although it orientes growth along a certain direction(a or c axis).Moreover,the experimental results show that just only for the epitaxial thin film the ferromagnetic-paramagnetic transition temperature(i.e.the Courier temperature Tc) equals to the metal-semiconductor transition temperature(Tp).The ferromagnetic state shows metallicity and the paramagnetic state exhibits semiconducting character.
The growth conditions epitaxial thin film are investigated of Lao. 7 Cao. 3 MnO3 （ LCMO ） The results indicate that the deposition temperature plays a crucial role on the growth mode of LCMO thin film. There is an optimal deposition temperature, To, for the epitaxial growth of LCMO thin film. Just only at the To, the real epitaxial LCMO thin film can be obtained. When the deposition temperature deviates from the T,,, the thin film tends to be polycrystalline, although it orientes growth along a certain direction （a or c axis）. Moreover, the experimental results show that just only for the epitaxial thin film the ferromagnetic-paramagnetic transition temperature （i. e. the Courier temperature T ） equals to the metal-semiconductor transition temperature （ To ）. The ferromagnetic state shows metallicity and the paramagnetic state exhibits semiconducting character.
出处
《北京印刷学院学报》
2011年第4期72-75,共4页
Journal of Beijing Institute of Graphic Communication
基金
北京市属高等学校人才强教计划资助项目(PHR201107145)
