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Magnetic properties of B doped Mn-Ga-C based alloysстатья
- Авторы: Dubenko I., Oli A., Duncan J., Granovsky A., Razhabov R., Hill M., Koshkid'ko Yu, Stadler S., Talapatra S., Ali N.
- Журнал: Journal of Magnetism and Magnetic Materials
- Том: 587
- Год издания: 2024
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Номер статьи: 171505
- DOI: 10.1016/j.jmmm.2023.171505
- Аннотация: We present results on the structural and magnetic properties of the B-doped Mn60Ga20C20-xBx system with x = 0, 1, 2, 3, 4 and 5. A ball milling technique followed bypressing the components, and annealing under an ultra-high purity argon atmosphere for 2 h was employed to fabricate the samples. According to the XRD diffractiondata, all samples can be described as single-phase compounds (i.e., the Mn3Ga cubic phase in the Pm–3 m space group) where impurity phases did not exceed 5 %.The compounds with x < 5 show similar physical behaviors as the parent, Mn3Ga2C2, which can be generally characterized by a low temperature transition from lowto high magnetization states. High boron concentrations were found to completely suppress the antiferromagnetic state. The (x-TC) phase diagram at 10 K has beenconstructed and discussed. The magnetocaloric measurements result in magnetic entropy changes of 3.0 Jkg-1k 1 at 5 T and ΔTad by direct measurement of about 0.8K at 1.8 T.
- Добавил в систему: Грановский Александр Борисович