We report on the epitaxial growth of ${\mathrm{PrVO}}_3$ and ${\mathrm{LaVO}}_3$ by molecular beam epitaxy on (001)-oriented ${\mathrm{SrTiO}}_3$ substrates. We show that a high control of the deposition is achieved and leads to a highly reproducible layer-by-layer growth mode. We evidence also the effect of epitaxial strain on the magnetic properties of the epitaxial films. High-resolution transmission electron microscopy and scanning transmission electron microscopy observations reveal that an antipolar motion of the rare earth atoms exists in both ${\mathrm{LaVO}}_3$ and ${\mathrm{PrVO}}_3$ thin films. The investigation of the structural distortions and atomic displacements in the vanadate thin films may be generalized to other orthorhombic perovskite oxides and contributes to the search of ferroelectricity by design in symmetry-breaking magnetic oxide superlattices.

中文翻译：

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LaVO3和PrVO3薄膜的外延生长和结构

我们报告了外延生长 ${\mathrm{病毒}}_3$ 和 ${\mathrm{拉沃}}_3$ 通过分子束外延对（001）取向 ${\mathrm{钛酸锶}}_3$基材。我们表明实现了对沉积的高度控制，并导致了高度可重复的逐层生长模式。我们还证明了外延应变对外延膜磁性能的影响。高分辨率透射电子显微镜和扫描透射电子显微镜的观察表明，两种原子中都存在稀土原子的反极性运动。${\mathrm{拉沃}}_3$ 和 ${\mathrm{病毒}}_3$薄膜。钒酸盐薄膜中结构畸变和原子位移的研究可能会推广到其他正交晶系钙钛矿氧化物，并通过设计破坏对称性的磁性氧化物超晶格有助于铁电的寻找。