CAJ | 학술논문

合成了Zr1-xMxWMoO8-x/z(M=Er,Tm,Yb,Sc,In,Ga,Al)和Zr1-MxW2O8-x/2=Eu,Er,Yb,Sc,In,Ga,Al)2个系列的固溶体,前者具有β-ZrW2O8结构类型(简称β相);后者具有α-ZrW2O8结构类型(简称α相).建立了相和相的晶胞参数与M3+离子浓度的Vegard方程,测定了上述固溶体的固溶度.讨论了M3+离子的化学性质与Vegard斜率 Sv的关系.分析了α相的SαA与β相的SβA的关系;揭示了α-Zr1-xMxW2O8-x/2晶格中2[WO4]四面体对的取向有序程度对晶格畸变的贡献.提出上述固溶体的晶胞参数随溶质浓度增加而减小,主要是由于氧空位缺陷相互作用的结果.
합성료Zr1-xMxWMoO8-x/z(M=Er,Tm,Yb,Sc,In,Ga,Al)화Zr1-MxW2O8-x/2=Eu,Er,Yb,Sc,In,Ga,Al)2개계렬적고용체,전자구유β-ZrW2O8결구류형(간칭β상);후자구유α-ZrW2O8결구류형(간칭α상).건립료상화상적정포삼수여M3+리자농도적Vegard방정,측정료상술고용체적고용도.토론료M3+리자적화학성질여Vegard사솔 Sv적관계.분석료α상적SαA여β상적SβA적관계;게시료α-Zr1-xMxW2O8-x/2정격중2[WO4]사면체대적취향유서정도대정격기변적공헌.제출상술고용체적정포삼수수용질농도증가이감소,주요시유우양공위결함상호작용적결과.
The Zr1 -xMxWMoO8-x/2 (M=Er,Tm,Yb,Sc,In,Ga,AI) and Zr1-xMxW2O8-x/2 (M=Sc,In,Ga,AI) solid solutions were synthesized.Their XRD patterns show typical structure of β- and α- ZrW2O8,respectively.The lattice parameters α′s for both series of solid solutions are linear functions of the M3+ concentrationM within the limited solubility,and could be described by Vegard equations with the slope of SαM or SβM dependent of the difference in ionic radius and the electro-negativity of the M3+ ion.However,SαM of α-Zr1-xMxW2O8-x/2 appears to be also associated with the partial orientation of 2[WO4] pair.In addition,the contraction of the lattice parameters observed for both series of the solid solutions are possibly caused primarily by the oxygen vacancy defect.