Structural and magnetic properties of (Cr1−x Mn x )5Al8 solid solution and structural relation to hexagonal nanolaminates
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Electron microscopy is used to reveal the competitive epitaxial growth of bcc structure (Cr1−x Mn x )5Al8 and (Cr1−y Mn y )2AlC [M n+1AX n (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−x Mn x )5Al8, due to the interplanar spacing of (Cr1−x Mn x )5Al8 that matches exactly half a unit cell of (Cr1−y Mn y )2AlC. Vibrating sample magnetometry shows that a thin film exclusively consisting of (Cr1−x Mn x )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.
KeywordsMagnetron Sputtering Magnetic Response Vibrate Sample Magnetometer Measurement Complementary Analysis Technique State Sample Phase
The research leading to these results has received funding from the European Research Council under the European Communities Seventh Framework Programme (FP7/2007-2013)/ERC Grant Agreement No. . J. R. acknowledges funding from the Swedish Research Council (VR) Grant No. 642-2013-8020 and the KAW Fellowship program. P. O. Å. P. and L. H. acknowledge the Swedish Research Council (VR) and Knut and Alice Wallenberg Foundation for providing funding for the Linköping double-corrected Titan3 60–300 kV electron microscope. J. R. and P. O. Å. P acknowledge support from the SSF Synergy Grant FUNCASE Functional Carbides and Advanced Surface Engineering. F. M. acknowledges financial support from the Carl Trygger Foundation.
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