Polycrystalline materials from the manganese rich part of the Manganese-Gallium phase system provide hard magnetic properties with high coercive fields and low saturation. [1] [2] Due to their special magnetic properties these binary intermetallic compounds assume  as promising starting material for new rare earth free permanent magnetic materials. The presented investigation deals with the first floating zone growth of these binary materials, their micro- and crystal structure analysis in addition to their magnetic properties. The fundamental studies gives information about the phase formation in the complex binary phase system of Mn-Ga [3] and a promising synthesis route for the crystallization of single-crystalline samples, needed for further comprehensive magnetic measurements.

[1] Balke et al., Appl. Phys. Lett. 90, 152504 (2007);

[2] Winterlik et al., Physical Review B, 77, 054406 (2008);

[3] Minakuchi et al., Journal of Alloys and Compounds, 537 (2012)

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