α-1，2，4-三唑-4-氯-苯乙酮[C1C6H4COCH2（C2H4N3）]的合成和晶体结构

报道了标题化合物的合成,其结构经X-射线衍射分析得到了表征.化合物为单斜晶系,P21/c空间群,相关晶体数据为: a＝1.342 0(3) nm, b＝0.972 0(2) nm, c＝0.790 0(2) nm, β＝92.00(3)°, V＝1.029 9(4) nm3,Z＝4,Dc＝1.429 g/cm3,F(000)＝456,μ＝0.345 nm-1,R＝0.043 5,wR＝0.089 4.晶体分子通过氢键以及分子间作用力相互连接在一起,形成超分子键,并通过氢键相互连接,形成三维网状结构,使分子结构更加趋于稳定.     

Microstructure, crystalline phase and electrical properties of Li0.06（Na0.5K0.5）0.94Nb（1-2x/5）MgxO3 lead-free piezoelectric ceramics

MgO-modified Li0.06(Na0.5K0.5)0.94NbO3(L6NKN) lead-free piezoelectric ceramics were synthesized by normal sintering at a relatively low temperature of 1000°C.The crystalline phase,microstructure,and electrical properties of the ceramics were investigated with a special emphasis on the influence of MgO content.The addition of MgO effectively improves the sinterability of the L6NKN ceramics.X-ray diffraction analysis indicates that the morphotropic phase boundary(MPB) separating orthorhombic and tetragonal ph...