Structural and magnetic properties of (Ro0.5A 0.5)NIO3 perovskites (R = GD, YB and A = CE, TH)

J. W. Chen, H. M. Liu, H. C.I. Kao, H. S. Sheu, J. F. Lee, D. C. Ling, W. F. Pong, L. Horng

Research output: Contribution to journalArticlepeer-review


Four perovskite compounds with nominal compositions of (Gd 0.5Th0.5)NiO3, (Gd0.5Ce 0.5)NiO3, (Yb0.5Th0.5)NiO 3 and (Yb0.5Ce0.5)NiO3 were prepared by a polymeric citrate precursor method. They were either slow-cooled in the furnace or quenched to room temperature. All of them have monoclinic symmetry. Quenched samples have a slightly bigger unit cell volume and longer Ni-O bond length, and a smaller grain size than that of the furnace-cooled compounds. All samples are paramagnetic insulators in the range of 2 K to 300 K. The Th containing compounds have larger tolerance factor and Ni(1)-O(1)-Ni(2) bond angle than that of the Ce containing compounds. No mixed valence of Ce, Th and Ni is observed in these samples.

Original languageEnglish
Pages (from-to)3443-3447
Number of pages5
JournalInternational Journal of Modern Physics B
Issue number18-19
Publication statusPublished - 2007 Jul 30

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics

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