Structural and magnetic properties of (Cr1−xMnx)5Al8 solid solution and structural relation to hexagonal nanolaminates
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- Mockute, A., Persson, P.O.Å., Lu, J. et al. J Mater Sci (2014) 49: 7099. doi:10.1007/s10853-014-8416-8
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Electron microscopy is used to reveal the competitive epitaxial growth of bcc structure (Cr1−xMnx)5Al8 and (Cr1−yMny)2AlC [Mn+1AXn (MAX)] phase during both magnetron sputtering and arc deposition. X-ray diffraction θ–2θ measurements display identical peak positions of (000n)-oriented MAX phase and (Cr1−xMnx)5Al8, due to the interplanar spacing of (Cr1−xMnx)5Al8 that matches exactly half a unit cell of (Cr1−yMny)2AlC. Vibrating sample magnetometry shows that a thin film exclusively consisting of (Cr1−xMnx)5Al8 exhibits a magnetic response, implying that the potential presence of this phase needs to be taken into consideration when evaluating the magnetic properties of (Cr, Mn)2AlC.