Relation of the superstructure modulation and extra-oxygen local-structural distortio

Mao Zhiqiang, Xu Gaojie, Zhang Shuyuan, Tan Shun, Lu Bin, Tian Mingliang, Fan Chenggao, Xu Cunyi, Zhang Yuheng

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The modulated structure of (Formula presented)(Formula presented)(Formula presented)(Formula presented)(Formula presented) (y=0.2, n0.4;n0.1⩽x⩽1.0) was studied by means of electron diffraction. The experimental data show that the modulated structure changes from a mixed Bi/Pb-type to a pure Bi-type modulation with an increasing amount of La content in both the y=0.2 and 0.4 series and that the periodicity of the Bi-type modulation decreases correspondingly. When x=1.0, the modulation exhibits nearly the same characteristic in the samples with y=0.2 and 0.4. In addition, the extra-oxygen behavior, together with the local-structural distortion characteristic, related to the change of the modulated structure was also examined with Raman scattering, x-ray photoelectron spectroscopy and high-resolution electron micro- graphy. The experiment results reveal that there are more extra-oxygen atoms intercalating in the (Formula presented)(Formula presented) layers with a decrease in the modulation periodicity in the y=0.2 series. However, for the y=0.4 series, no more extra oxygen is incorporated into the (Formula presented)(Formula presented) layers with a decrease in the modulation periodicity, but the degree of local-structural distortion strengthens markedly in the (Formula presented)(Formula presented) layers. Based on these experiment results, we discuss the relationship of the superstructure modulation, extra oxygen, and the local-structural distortion.

Original languageEnglish (US)
Pages (from-to)9130-9135
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume55
Issue number14
DOIs
StatePublished - Jan 1 1997

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Modulation
Oxygen
modulation
oxygen
Photoelectron spectroscopy
periodic variations
Electron diffraction
Raman scattering
Experiments
X rays
Atoms
Electrons
photomicrography
x ray spectroscopy
oxygen atoms
electron diffraction
photoelectron spectroscopy
Raman spectra
high resolution

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Zhiqiang, Mao ; Gaojie, Xu ; Shuyuan, Zhang ; Shun, Tan ; Bin, Lu ; Mingliang, Tian ; Chenggao, Fan ; Cunyi, Xu ; Yuheng, Zhang. / Relation of the superstructure modulation and extra-oxygen local-structural distortio. In: Physical Review B - Condensed Matter and Materials Physics. 1997 ; Vol. 55, No. 14. pp. 9130-9135.
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title = "Relation of the superstructure modulation and extra-oxygen local-structural distortio",
abstract = "The modulated structure of (Formula presented)(Formula presented)(Formula presented)(Formula presented)(Formula presented) (y=0.2, n0.4;n0.1⩽x⩽1.0) was studied by means of electron diffraction. The experimental data show that the modulated structure changes from a mixed Bi/Pb-type to a pure Bi-type modulation with an increasing amount of La content in both the y=0.2 and 0.4 series and that the periodicity of the Bi-type modulation decreases correspondingly. When x=1.0, the modulation exhibits nearly the same characteristic in the samples with y=0.2 and 0.4. In addition, the extra-oxygen behavior, together with the local-structural distortion characteristic, related to the change of the modulated structure was also examined with Raman scattering, x-ray photoelectron spectroscopy and high-resolution electron micro- graphy. The experiment results reveal that there are more extra-oxygen atoms intercalating in the (Formula presented)(Formula presented) layers with a decrease in the modulation periodicity in the y=0.2 series. However, for the y=0.4 series, no more extra oxygen is incorporated into the (Formula presented)(Formula presented) layers with a decrease in the modulation periodicity, but the degree of local-structural distortion strengthens markedly in the (Formula presented)(Formula presented) layers. Based on these experiment results, we discuss the relationship of the superstructure modulation, extra oxygen, and the local-structural distortion.",
author = "Mao Zhiqiang and Xu Gaojie and Zhang Shuyuan and Tan Shun and Lu Bin and Tian Mingliang and Fan Chenggao and Xu Cunyi and Zhang Yuheng",
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Zhiqiang, M, Gaojie, X, Shuyuan, Z, Shun, T, Bin, L, Mingliang, T, Chenggao, F, Cunyi, X & Yuheng, Z 1997, 'Relation of the superstructure modulation and extra-oxygen local-structural distortio', Physical Review B - Condensed Matter and Materials Physics, vol. 55, no. 14, pp. 9130-9135. https://doi.org/10.1103/PhysRevB.55.9130

Relation of the superstructure modulation and extra-oxygen local-structural distortio. / Zhiqiang, Mao; Gaojie, Xu; Shuyuan, Zhang; Shun, Tan; Bin, Lu; Mingliang, Tian; Chenggao, Fan; Cunyi, Xu; Yuheng, Zhang.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 55, No. 14, 01.01.1997, p. 9130-9135.

Research output: Contribution to journalArticle

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T1 - Relation of the superstructure modulation and extra-oxygen local-structural distortio

AU - Zhiqiang, Mao

AU - Gaojie, Xu

AU - Shuyuan, Zhang

AU - Shun, Tan

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AU - Chenggao, Fan

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AU - Yuheng, Zhang

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AB - The modulated structure of (Formula presented)(Formula presented)(Formula presented)(Formula presented)(Formula presented) (y=0.2, n0.4;n0.1⩽x⩽1.0) was studied by means of electron diffraction. The experimental data show that the modulated structure changes from a mixed Bi/Pb-type to a pure Bi-type modulation with an increasing amount of La content in both the y=0.2 and 0.4 series and that the periodicity of the Bi-type modulation decreases correspondingly. When x=1.0, the modulation exhibits nearly the same characteristic in the samples with y=0.2 and 0.4. In addition, the extra-oxygen behavior, together with the local-structural distortion characteristic, related to the change of the modulated structure was also examined with Raman scattering, x-ray photoelectron spectroscopy and high-resolution electron micro- graphy. The experiment results reveal that there are more extra-oxygen atoms intercalating in the (Formula presented)(Formula presented) layers with a decrease in the modulation periodicity in the y=0.2 series. However, for the y=0.4 series, no more extra oxygen is incorporated into the (Formula presented)(Formula presented) layers with a decrease in the modulation periodicity, but the degree of local-structural distortion strengthens markedly in the (Formula presented)(Formula presented) layers. Based on these experiment results, we discuss the relationship of the superstructure modulation, extra oxygen, and the local-structural distortion.

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