同构模板层对稳定烧绿石Bi$_2$Rh$_2$O$_7$的影响
Impact of iso-structural template layer on stabilizing pyrochlore Bi$_2$Rh$_2$O$_7$
AI总结:
通过插入同构Eu$_2$Ti$_2$O$_7$模板层实现烧绿石Bi$_2$Rh$_2$O$_7$的外延稳定,揭示同构晶相对界面相控制的关键作用,并发现该薄膜具有低电阻率及温度无关的导电特性。
摘要:
我们通过插入烧绿石Eu$_2$Ti$_2$O$_7$模板层,实现了烧绿石Bi$_2$Rh$_2$O$_7$在Y稳定ZrO$_2$(YSZ)(111)衬底上的外延稳定,否则Bi基层状结构会直接在YSZ(111)衬底上形成。该结果表明,“同构晶相”在界面相控制中起重要作用。Bi$_2$Rh$_2$O$_7$薄膜表现出p型导电性,其纵向电阻率($ρ_\mathrm{xx}$)在已报道的Rh烧绿石氧化物中最低。$ρ_\mathrm{xx}$、载流子密度和迁移率等参数在2$-$300 K测量范围内几乎无温度依赖性,表明Bi$_2$Rh$_2$O$_7$是导电烧绿石氧化物的罕见实例之一。
英文摘要:
We present an epitaxial stabilization of pyrochlore Bi$_2$Rh$_2$O$_7$ on Y-stabilized ZrO$_2$ (YSZ) (111) substrate by inserting a pyrochlore Eu$_2$Ti$_2$O$_7$ template layer, otherwise Bi-based layered structures being formed directly on YSZ (111) substrate. This result reveals that "iso-structural crystal phase" plays an important role in the interfacial phase control. The Bi$_2$Rh$_2$O$_7$ film exhibits $p$-type electrical conduction with the lowest longitudinal resistivity ($ρ_\mathrm{xx}$) among the reported Rh pyrochlore oxides. Such parameters as $ρ_\mathrm{xx}$, carrier density, and mobility show almost no temperature dependence in the measured range of 2$-$300 K, indicating Bi$_2$Rh$_2$O$_7$ as one of the rare examples of conducting pyrochlore oxides.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。