Magnetic Properties of Co-2 2+Co1-x3+Fex3+ BO5 (x=0.10) Single Crystals with a Ludwigite Structure

Knyazev, Yu. V.; Kazak, N. V.; Bayukov, O. A.; Platunov, M. S.; Velikanov, D. A.; Bezmaternykh, L. N.; Ivanova, N. B.; Ovchinnikov, S. G. JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS, 124 (4):623-627; Doi: 10.1134/S106377611703013X APR 2017

The investigation of mixed Co–Fe ludwigite single crystals shows that their magnetic properties are close to the magnetic properties of Fe3BO5 despite the predominance of cobalt ions. The magnetic properties of Co3 – xFexBO5 single crystals with x = 0.10 are studied in detail. Magnetometric measurements demonstrate a strong magnetic anisotropy with easy magnetization axis b, and the orbital magnetic moment of cobalt is in a frozen state. The detected temperature dependence of the absorption of Mössbauer spectra allowed us to determine the magnetic ordering temperature, which agrees with the results of magnetization measurements (TC = 84 K).

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