摘 要：采用固相化学反应方法制备了 Y_(1-x)SrxMnO₃ 体系的系列样 品。 利用 X 射线衍射分析（XRD）和扫描电子 显 微 镜（SEM）研 究 了 Y_(1-x)SrxMnO₃ 体系样品的形貌、相关系和固溶区范围。 结果表明，多次 研磨和烧结是制备样品的必要条件。 采用 Rietveld 结构精修的方法研 究了不同掺杂量对晶体结构的影响。 研究表明，晶胞参数 a(b)、c 和 V 与掺杂量基本呈现规律性变化， 空间群为 P63 cm 单相的固溶区范围 大约为 x=0～0.04。 

关键词：Y_(1-x)SrxMnO₃ 陶瓷；固相化学反应；晶体结构；相关系

Abstract: A series of samples of Y_(1-x)SrxMnO₃ ceramics were prepared by a solid-state reaction method. The morphology， phase relations， solid so lution range of Y_(1-x)SrxMnO₃ ceramics were studied by X-ray diffractome try(XRD)， scanning electron microscopy(SEM). The results showed that the repeated milling and calcinations was necessary for preparing Y_{( 1-x )}SrxMnO₃ ceramics. In addition， the Rietveld refinement method was employed to study the effect of Sr doping on the crystal structure of the single-phase compositions. The results showed that the lattice parameters (a， b， c and volume V of the unit cell) were changed regularly with in creasing of Sr content for these samples in the solid solution range and the single-phase ceramics with space group P63cm was formed in the solid solution range x=0～0.04. 

Keywords: Y_(1-x)SrxMnO₃ ceramics; solid-state reaction; crystal structure; phase relation; solid solution