Email this article Thermal Expansion of FeBO3 and Fe3BO6 Antiferromagnets Near the Neel Temperature
- Authors: Biryukov Y.P.1, Filatov S.K.2, Vagizov F.G.3, Zinnatullin A.L.3, Bubnova R.S.1,2
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Affiliations:
- Grebenshchikov Institute of Silicate Chemistry
- St. Petersburg State University
- Kazan Federal University
- Issue: Vol 59, No 8 (2018)
- Pages: 1980-1988
- Section: Article
- URL: https://journal-vniispk.ru/0022-4766/article/view/161820
- DOI: https://doi.org/10.1134/S0022476618080309
- ID: 161820
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Abstract
FeBO3 and Fe3BO6 are antiferromagnets with TN ≈ 348 K and 508 K respectively. This work presents the results of the study of the thermal expansion and phase transitions occurring in these borates by hightemperature X-ray powder diffraction and Mössbauer spectroscopy in a wide temperature range. Unit cell parameters are refined by the Rietveld method at different temperatures. For both compounds an abrupt change in thermal expansion coefficients α is revealed near the magnetic antiferromagnet–paramagnet phase transition.
About the authors
Y. P. Biryukov
Grebenshchikov Institute of Silicate Chemistry
Author for correspondence.
Email: y.p.biryukov@gmail.com
Russian Federation, St. Petersburg
S. K. Filatov
St. Petersburg State University
Email: y.p.biryukov@gmail.com
Russian Federation, St. Petersburg
F. G. Vagizov
Kazan Federal University
Email: y.p.biryukov@gmail.com
Russian Federation, St. Petersburg
A. L. Zinnatullin
Kazan Federal University
Email: y.p.biryukov@gmail.com
Russian Federation, St. Petersburg
R. S. Bubnova
Grebenshchikov Institute of Silicate Chemistry; St. Petersburg State University
Email: y.p.biryukov@gmail.com
Russian Federation, St. Petersburg; St. Petersburg
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