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Determination of the Average Oxidation Degree of Manganese in Single Crystals of Manganites

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Abstract

A procedure has been developed for the determination of the average oxidation degree of manganese in manganites of rare-earth elements. It is shown that potassium periodate in a mixture of conc. HNO3and H3PO4quantitatively oxidizes manganites to permanganic acid at a temperature of ∼90°C. This allows total manganese in a test sample to be determined by photometry. The procedure involves two independent steps at which the average oxidation degree of manganese in manganites is determined by photometry and iodometry with a confidence interval of 0.02.

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Authors and Affiliations

  1. Institute of Solid-State and Semiconductor Physics, Belarussian Academy of Sciences, bul'v. Brovki 17, Minsk, 220072, Belarus

    A. G. Soldatov, S. V. Shiryaev & S. N. Barilo

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  1. A. G. Soldatov
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  2. S. V. Shiryaev
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  3. S. N. Barilo
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Soldatov, A.G., Shiryaev, S.V. & Barilo, S.N. Determination of the Average Oxidation Degree of Manganese in Single Crystals of Manganites. Journal of Analytical Chemistry 56, 1077–1079 (2001). https://doi.org/10.1023/A:1012924630528

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  • DOI: https://doi.org/10.1023/A:1012924630528

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