STRUCTURAL-CHANGE AND MAGNETIC-PROPERTIES OF Y2BANI1-XZNXO5 OXIDES

被引：43

作者：

SAEZPUCHE, R ^{[1
]}

CORONADO, JM ^{[1
]}

OTERODIAZ, CL ^{[1
]}

LLORENTE, JMM ^{[1
]}

机构：

[1] UNIV SALAMANCA,FAC CIENCIAS QUIM,DEPT QUIM INORGAN,SALAMANCA,SPAIN

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1991年 / 93卷 / 02期

关键词：

D O I：

10.1016/0022-4596(91)90320-H

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The magnetic susceptibility of Y2BaNiO5 has been measured in the range 4.2-800 K. The broad maximum in the χ vs T plot centered at 420 K is indicative of the existence of low-dimensional antiferromagnetic ordering along the chains of vertex sharing (NiO6) octahedra in the a-axis of the structure. The data have been fitted by using the 1D Heisenberg model and the value of the exchange constant J is -322 K. Doped Y2BaNi1-xZnxO5 oxides have also been prepared and the Y2BaNiO5 structure changes, giving rise to the Sm2BaCuO5 structure type, characterized by the existence of isolated pyramids (CuO5), for x values as small as 0.13. Electron microscopy and diffraction studies reveal the existence of a well-ordered microstructure with the Zn and Ni atoms randomly distributed. © 1991.

引用

页码：461 / 468

页数：8

共 16 条

[1]

AMADOR J, 1990, PHYS REV B, V42, P4337

[2] PHASE-EQUILIBRIUM STUDY OF THE Y-BA-NI-O SYSTEM AND STRUCTURAL CHARACTERIZATION OF THE NEW QUASI-ONE-DIMENSIONAL OXIDE Y2BANIO5 [J].

BUTTREY, DJ ;

SULLIVAN, JD ;

RHEINGOLD, AL .

JOURNAL OF SOLID STATE CHEMISTRY, 1990, 88 (01) :291-302

[3]

CARLING RL, 1986, MAGNETOCHEMISTRY

[4] EVIDENCE FOR THE ANTIFERROMAGNETIC ORDERING OF THE GREEN PHASE Y2BACUO5 [J].

CHATTOPADHYAY, T ;

BROWN, PJ ;

KOBLER, U ;

WILHELM, M .

EUROPHYSICS LETTERS, 1989, 8 (07) :685-689

[5] EXPERIMENTS ON SIMPLE MAGNETIC MODEL SYSTEMS [J].

DEJONGH, LJ ;

MIEDEMA, AR .

ADVANCES IN PHYSICS, 1974, 23 (01) :1-260

[6] Report on the theory of ferromagnetism [J].

Ising, E .

ZEITSCHRIFT FUR PHYSIK, 1925, 31 :253-258

[7]

Martinez Juanjo, COMMUNICATION

[8] THE OXIDES A2BACUO5 (A=Y,SM,EU,GD,DY,HO,ER,YB) [J].

MICHEL, C ;

RAVEAU, B .

JOURNAL OF SOLID STATE CHEMISTRY, 1982, 43 (01) :73-80

[9]

MULAY LN, 1976, THEORY MOL PARAMAGNE, P494

[10]

MULLERBUSCHBAUM H, 1986, Z ANORG ALLG CHEM, V540, P243

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