Chemical bond properties and M（?）ssbauer spectroscopy in (La1-xMx)2CuO4（M=Ba,Sr）
来源期刊：Rare Metals2002年第4期
论文作者：GAO Faming, LI Dongchun, XIE Dianyang, TIAN Yongjun, and ZHANG Siyuan College of Materials Science and Chemical Engineering, Yanshan University, Qinghuangdao , China Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun , China
文章页码：299 - 303
摘 要：<正>By using the average band-gap model, the chemical bond properties of （La1-xMx）2CuO4（M=Ba, Sr） were calcu-lated . The calculated covalencies for Cu-O and La-O bond in the compounds are 0.3 and 0.03 respectively. Mossbauerisomer shifts of 57Fe doped in La2CuO4 and 119Sn doped in La2CuO4 were calculated by using the chemical surroundingfactor defined by covalency and electronic polarizability. Four valence state tin and three valence iron sites were identifiedin 57Fe and 119Sn doped La2CuO4.
摘要：<正>By using the average band-gap model, the chemical bond properties of （La1-xMx）2CuO4（M=Ba, Sr） were calcu-lated . The calculated covalencies for Cu-O and La-O bond in the compounds are 0.3 and 0.03 respectively. Mossbauerisomer shifts of 57Fe doped in La2CuO4 and 119Sn doped in La2CuO4 were calculated by using the chemical surroundingfactor defined by covalency and electronic polarizability. Four valence state tin and three valence iron sites were identifiedin 57Fe and 119Sn doped La2CuO4.
关键词：
