X-ray diffraction;
neutron diffraction;
K2NiF4-type structure;
bond-valence;
magnetic susceptibility measurements;
mixed valence character of copper;
D O I:
10.1016/j.solidstatesciences.2005.10.009
中图分类号:
O61 [无机化学];
学科分类号:
070301 ;
081704 ;
摘要:
Compounds from the solid solution NdSrNi1-xCuxO4-delta, 0 <= x <= 1, have been prepared using conventional solid state methods and were characterized by X-ray powder diffraction, thermo-gravimetric analysis and magnetic susceptibility measurements. The samples adopt the K2NiF4-type structure. For x = 0.2 and x = 0.6, neutron diffraction measurements were performed and bond-valence sums (BVSs) were calculated from the Brown bond valence calculation theory. Magnetic susceptibility data for all the compositions follow Curie-Weiss behavior in the temperature range 100-300 K with no evidence of long range magnetic ordering down to 2 K. The effect of Cu2+ incorporation on the magnetic properties of NdSrNi1-xCuxO4-delta, 0 <= x <= 1, is discussed. (c) 2005 Elsevier SAS. All rights reserved.
机构:
Beijing Normal Univ, Coll Chem, Beijing 100875, Peoples R China
Univ St Andrews, Sch Chem, EaSTCHEM, St Andrews KY16 9ST, Fife, ScotlandEuropean Synchrotron Radiat Facil, F-38043 Grenoble 9, France
Yue, Wenbo
Zhou, Wuzong
论文数: 0引用数: 0
h-index: 0
机构:
Univ St Andrews, Sch Chem, EaSTCHEM, St Andrews KY16 9ST, Fife, ScotlandEuropean Synchrotron Radiat Facil, F-38043 Grenoble 9, France