摘要
<正>Structural evolution of the layered manganite Sr_7Mn_4O_(15)~([1])has been studied by the in-situ X-ray diffraction in the temperature range from 300 K to 1200 K.Structural evolution model has been established through Rietveld refinement using the GSAS suite of programs.Thermal expansion property of Sr_7Mn_4O_(15)presents a linear dependence,and the structure of corner-sharing
引文
[1]J.F.Vente,J.R.Plaisier,D.J.W.Ijdo,and K.V.Kamenev,Preparation and crystallographic properties of Sr7-x(Ca/Ba)xM n4O15,Mater.Res.Bull.,35[14-15](2000)2437-44.
[2]A.Feltz,R.Kriegel,and W.P?lzl,Sr7Mn4O15 ceramics for high temperature NTC thermistors,J.Mater.Sci.Lett.,18[20](1999)1693-95.