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Study of structural defects in γ‐MnO2 by Raman spectroscopy
Abstract
The structural arrangement of γ‐MnO 2 is currently explained by a random intergrowth of pyrolusite layers in a ramsdellite matrix. The structures of a large variety of γ‐MnO 2 samples with various structural parameters Pr were studied by x‐ray powder diffraction and Raman scattering spectroscopy. We show that elucidation of the quantitative determination of the structural disorder present in γ‐MnO 2 is accurate by Raman scattering spectroscopy. The Raman data for manganese dioxides with the γ‐type structure are treated by a local environment model, which allows one to consider the relationship between the band wavenumber and the pyrolusite intergrowth that corresponds to the structural De Wolff defects. Copyright © 2002 John Wiley & Sons, Ltd.
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An Algorithm for Least-Squares Estimation of Nonlinear Parameters
Marquardt, D. W. (1963) · Journal of the Society for Industrial and Applied Mathematics · doi:10.1137/0111030 · Cited by 30,728
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Metadata
- Authors
- Julien, C., Massot, M., Rangan, S., Lemal, M., & Guyomard, D.
- Venue
- Journal of Raman Spectroscopy
- Publisher
- Wiley
- Published
- 2002-03-08
- Volume
- 33
- Issue
- 4
- Pages
- 223-228
- ISSN
- 0377-0486 (ISSN-L)
- 1097-4555
- OpenAlex
- W2010061774
- Cited by
- 322
- References
- 1
- FWCI
- 3.98
- Type
- journal article
- Language
- en
- Open access
- closed
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- Julien, C., Massot, M., Rangan, S., Lemal, M., & Guyomard, D. (2002). Study of structural defects in γ‐MnO2 by Raman spectroscopy. Journal of Raman Spectroscopy. https://doi.org/10.1002/jrs.838
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