Investigation of the magnetic phase transition and magnetocaloric properties of the Mn2FeSbO6 ilmenite

• Published in: Journal of magnetism and magnetic materials Vol. 331; pp. 193 - 197
• Main Authors: Hudl, M., Mathieu, R., Nordblad, P., Ivanov, S.A., Bazuev, G.V., Lazor, P.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-04-2013
• Subjects: Adiabatic flow; Entropy; Ilmenite; Magnetic phase transition; Magnetic properties; Magnetism; Magnetocaloric property; Melanostibite; Minerals; Phase transformations; Specific heat; Magnetocaloric property; Magnetic phase transition; Melanostibite
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2012.11.040

The magnetic phase transition and magnetocaloric properties of both mineral and synthetic melanostibite Mn2FeSbO6 with ilmenite-type structure have been studied. Mn2FeSbO6 orders ferrimagnetically below 270K and is found to undergo a second-order magnetic phase transition. The associated magnetic entropy change was found to be 1.7J/kgK for the mineral and 1.8J/kgK for the synthetic melanostibite for 5T field change. For the synthetic Mn2FeSbO6 the adiabatic temperature change was estimated from magnetic- and specific heat measurements and amounts to 0.2K in 1T field change. Perspectives of the functional properties of Mn2FeSbO6-based materials are discussed.
► The magnetic phase transition of both mineral and synthetic melanostibite is studied. ► Mn2FeSbO6 exhibits an ilmenite-type structure with alternating layers of Mn and Fe/Sb. ► Mn2FeSbO6 undergoes a second-order magnetic phase transition close to room temperature. ► The magnetocaloric properties of this ferrimagnetic system are investigated.