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Atoms state and interatomic interactions in perovskite-like oxides: XXXII. Formation of paramagnetic clusters in the La1−0.33x Ca0.33x Fe x Al1−x O3 and La1−0.33x Sr0.33x Fe x Al1−x O3 solid solutions

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Abstract

Calcium- and strontium-containing lanthanum orthoferrites have been studied using magnetic dilution method. It has been shown that the iron-atom clusters with competing ferro- and antiferromagnetic exchange interactions can exist. By using Mossbauer spectroscopy, Fe(IV) atoms have been found in the La1−0.33x Ca0.33x FexAl1−x O3 solid solutions and Fe(III) atoms in two different surroundings have been found in the La1−0.33x Sr0.33x Fe x Al1−x O3 solid solutions. The compositions of paramagnetic clusters stable at the infinite dilution have been proposed basing of the magnetic susceptibility and Mossbauer spectroscopy data.

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Authors and Affiliations

  1. St. Petersburg State University, Universitetskii pr. 26, St. Petersburg, 198504, Russia

    N. V. Chezhina, A. V. Fedorova & S. M. Musatov

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  1. N. V. Chezhina
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  2. A. V. Fedorova
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  3. S. M. Musatov
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Correspondence to A. V. Fedorova.

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Original Russian Text © N.V. Chezhina, A.V. Fedorova, S.M. Musatov, 2013, published in Zhurnal Obshchei Khimii, 2013, Vol. 83, No. 9, pp. 1419–1422.

For communication XXXI, see [1].

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Chezhina, N.V., Fedorova, A.V. & Musatov, S.M. Atoms state and interatomic interactions in perovskite-like oxides: XXXII. Formation of paramagnetic clusters in the La1−0.33x Ca0.33x Fe x Al1−x O3 and La1−0.33x Sr0.33x Fe x Al1−x O3 solid solutions. Russ J Gen Chem 83, 1645–1648 (2013). https://doi.org/10.1134/S107036321309003X

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  • DOI: https://doi.org/10.1134/S107036321309003X

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