中文摘要：

本文利用脉冲激光沉积方法制备出由铁磁材料La0．7Sr0．3MnO3和团簇玻璃材料La0．7Sr0．3CoO3构成的高质量外延超晶格．在这一超晶格体系中，当La0．7Sr0．3CoO3层在低温表现出团簇玻璃态行为时，La0．7Sr0．3MnO3层则表现出明显的矫顽力增强，特别是在温度降至5K时，其矫顽场相对单层膜增加了近16倍．我们认为这一矫顽力的增强效应来源于La0．7Sr0．3MnO3中的长程铁磁序与La0．7Sr0．3CoO3层的团簇玻璃态在界面处强烈的磁交换耦合．

英文摘要：

We prepare ferromagnetic La0. 67Sr0. 33MNO3/clusters glassLa0. 67Sr0. 33CoO3 superlattice with a high epitaxial quality by using pulsed laser deposition. In this system, apparent coercive field enhancement will appear in La0. 67Sr0. 33MNO3 layer, while La0. 67Sr0. 33CoO3 layer cially at 5K the coercive field is almost 16 times lager hancement phenomenon is mainly determined by the and La0. 67Sr0. 33CoO3, shows clusters glass behavior in low temperature range, espe-than the monolayer. The results indicate that the coercivity en- strong interfacial magnetic coupling between La0. 67Sr0. 33MNO3.