Abstract In this article, we present a substantial enhancement of magnetization in La0.70Sr0.30MnO3 (LSMO) perovskite thin film (100 nm) with 0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3 (PMN-PT) as a ferroelectric capping layer (100 nm) epitaxially grown on (001) oriented LaAlO3 (LAO) single crystal substrate. For PMN-PT/LSMO/LAO and LSMO/LAO, the ferromagnetic ordering temperature (TC) was found to be 316 K and 252 K with corresponding films having saturation magnetization ≃182 kA/m and ≃105 kA/m respectively, at 5 K. The enhancement in magnetization is mainly understood due to the tensile strain between PMN-PT and LSMO layers. Attributable to the self-polarization of the ferroelectric PMN-PT layer due to compressive strain, the accumulation of surplus holes at the interface of the ferromagnetic PMN-PT/LSMO layer might also contribute towards the improvement of magnetization.

中文翻译：

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0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3/La0.70Sr0.30MnO3异质结构的磁化显着增强

摘要 在本文中，我们展示了 La0.70Sr0.30MnO3 (LSMO) 钙钛矿薄膜（100 nm）的磁化强度的显着增强，其中 0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3 (PMN-PT) 作为铁电体在 (001) 取向的 LaAlO3 (LAO) 单晶衬底上外延生长的覆盖层 (100 nm)。对于 PMN-PT/LSMO/LAO 和 LSMO/LAO，发现铁磁有序温度 (TC) 为 316 K 和 252 K，相应薄膜的饱和磁化强度分别为 ≃182 kA/m 和 ≃105 kA/m，在 5 K. 磁化强度的增强主要是由于 PMN-PT 和 LSMO 层之间的拉伸应变。归因于压缩应变引起的铁电 PMN-PT 层的自极化，