Chinese Journal of Applied Chemistry ›› 1994, Vol. 0 ›› Issue (4): 50-53.

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Synthesis,Structure,Electrical and Magnetic Properties of NdSr1-χMχNiO4(M=Ca,Ba)

Li Siwen, Ren Yufang   

  1. Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chmistcy, Chinese Academy of Sciences, Changchun 130022
  • Received:1993-09-27 Revised:1993-12-09 Published:1994-08-10 Online:1994-08-10

Abstract: new series of solid solution NdSr1-χMχNiO4(M=Ca:0.0≤χ≤1.0;M=Ba:0.0≤χ≤0.6) were synthesized by solid state reaction method,and their structures, magnetic and electical properties and IR spectra have been studied.All the samples crystallized in tetragonal system,with exception of the NdCaNiO4 which crystallized in orthorhombic system. IR spectra of NdSr1-χMχNiO4 showed that the lengths of two Ni-D bonds decrease with the increase of Ca contents. The electric conduction changed from metalic type to semiconductive type,when χ≥0.4(M=Ca,Ba), and the room temperature resistivities of NdSr1-χMχNiO4 increased with the increase of Ca contents. Magnetic susceptibility measurements revealed that Ni3+ ions in all the samples at 77~300K Were in low-spin state.

Key words: mixed oxide, synthesis, electrical property, magnetic susceptibility