Magnetic properties of Co22+Co1 − x3+Fex3+BO5 (x = 0.10) single crystals with a ludwigite structure

Resumo

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 Co_{3 – x}Fe_xBO₅ 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 (T_C = 84 K).