论文标题
由Geo $ _6 $ -GEO $ _5 $ Polyhedra网络具有高热稳定性的晶体结构：$β$ -SRGE $ _2 $ o $ $ _5 $
Crystal structure built from a GeO$_6$-GeO$_5$ polyhedra network with high thermal stability: $β$-SrGe$_2$O$_5$
论文作者
论文摘要
通过应对将透明的氧化物半导体扩展到GE基氧化物的挑战，我们发现了一种尚未报告的晶体结构，称为$β$ -Srge $ _2 $ o $ o $ _5 $，该结构由geo $ _6 $ _6 $ conthahedra组成。单晶通过高压通量法成功生长。 $β$ -SRGE $ _2 $ o $ _5 $具有5.2 eV的带隙，并且具有有效质量的分散传导带，其有效质量是电子休息量的0.34倍，该质量来自边缘共享$ _6 $ _6 $ _6 $ oct octhedra Network。尽管已知的八面体地理$ _6 $协调的化合物通常在大气压力和升高温度下不稳定，但$β$ -srge $ _2 $ o $ _5 $展示了最高700 $^\ circ $ c的热稳定性。
By tackling the challenge of extending transparent oxide semiconductors to Ge based oxides, we have found a not-yet-reported crystal structure, named $β$-SrGe$_2$O$_5$, which is composed of edge-sharing GeO$_6$ octahedra interconnected by GeO$_5$ bipyramids. Single crystals were successfully grown by the high-pressure flux method. $β$-SrGe$_2$O$_5$ has a band gap of 5.2 eV and a dispersive conduction band with an effective mass as small as 0.34 times the electron rest mass, which originates from the edge-sharing GeO$_6$ octahedra network. Although known compounds with octahedral GeO$_6$ coordination are commonly unstable at atmospheric pressure and elevated temperatures, $β$-SrGe$_2$O$_5$ exhibits thermal stability up to 700 $^\circ$C.
