论文标题
界面在控制正常$ \ text {laino} _ \ text {3} $和立方$ \ text {basno} _ \ text {3} $之间的作用
The role of the interface in controlling the epitaxial relationship between orthorhombic $\text{LaInO}_\text{3}$ and cubic $\text{BaSnO}_\text{3}$
论文作者
论文摘要
与外延层不同对称性的外延钙钛矿氧化界面因新型行为和现象的出现而引起了极大的关注。在本文中，我们通过畸变校正的传输电子显微镜表明，正交$ \ text {laino} _ \ text {3} $胶片以三种不同类型的域的形式生长在立方$ \ text {basno} _ \ basno} _ \ text _ \ text {3} $ pseudosubsubstrate上。对TEM数据的定量评估表明，$ c_ {pc} $ - 方向和$ a_ {pc}/b_ {pc} $ - 方向域的范围具有相似的概率。虽然连续弹性理论表明$ c_ {pc} $ - 面向定向的域应表现出明显高于$ a_ {pc}/b_ {pc} $ - 定向域的应变能密度，而密度功能计算则确认$ c_ {pc} $ - {pc} $ - 和$ a_ __ {pc} $ - 方向的域上的域名$ \ text {basno} _ \ text {3} $具有相似的能量。
Epitaxial perovskite oxide interfaces with different symmetry of the epitaxial layers have attracted considerable attention due to the emergence of novel behaviors and phenomena. In this paper, we show by aberration corrected transmission electron microscopy that orthorhombic $\text{LaInO}_\text{3}$ films grow in form of three different types of domains on the cubic $\text{BaSnO}_\text{3}$ pseudosubstrate. Quantitative evaluation of our TEM data shows that $c_{pc}$-oriented and $a_{pc}/b_{pc}$-oriented domains are present with similar probability. While continuum elasticity theory suggests that $c_{pc}$-oriented domains should exhibit a significantly higher strain energy density than $a_{pc}/b_{pc}$-oriented domains, density functional calculations confirm that $c_{pc}$- and $a_{pc}$-oriented domains on $\text{BaSnO}_\text{3}$ have similar energies.
