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

doi:10.1142/s0217979207044718

Structural and magnetic properties of (Ro_0.5A _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

Department of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Four perovskite compounds with nominal compositions of (Gd _0.5Th_0.5)NiO₃, (Gd_0.5Ce _0.5)NiO₃, (Yb_0.5Th_0.5)NiO ₃ and (Yb_0.5Ce_0.5)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 language	English
Pages (from-to)	3443-3447
Number of pages	5
Journal	International Journal of Modern Physics B
Volume	21
Issue number	18-19
DOIs	https://doi.org/10.1142/s0217979207044718
Publication status	Published - 2007 Jul 30

All Science Journal Classification (ASJC) codes

Statistical and Nonlinear Physics
Condensed Matter Physics

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@article{cadb43c83c1b47ab8db204117eaaa387,

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

abstract = "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.",

author = "Chen, {J. W.} and Liu, {H. M.} and Kao, {H. C.I.} and Sheu, {H. S.} and Lee, {J. F.} and Ling, {D. C.} and Pong, {W. F.} and L. Horng",

year = "2007",

month = jul,

day = "30",

doi = "10.1142/s0217979207044718",

language = "English",

volume = "21",

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journal = "International Journal of Modern Physics B",

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T1 - Structural and magnetic properties of (Ro0.5A 0.5)NIO3 perovskites (R = GD, YB and A = CE, TH)

AU - Chen, J. W.

AU - Liu, H. M.

AU - Kao, H. C.I.

AU - Sheu, H. S.

AU - Lee, J. F.

AU - Ling, D. C.

AU - Pong, W. F.

AU - Horng, L.

PY - 2007/7/30

Y1 - 2007/7/30

N2 - 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.

AB - 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.

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