Electronic structure and magnetic examination of ScMn2 single crystal

• Published in: Journal of alloys and compounds Vol. 386; no. 1-2; pp. 82 - 86
• Main Authors: Kulpa, M., Talik, E., Winiarski, A., Mydlarz, T., Gilewski, A., Kusz, J., Böhm, H., Suski, W.
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier 11.01.2005
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Magnetic properties and materials; Physics; Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.); Electrical conductivity; Magnetization; Spin fluctuations; Transition element compounds; Magnetic field effects; Czochralski method; Rare earth compounds; Lattice parameters; Single crystal; Monocrystals; Electronic structure; Valence; Transition metal compounds; Electrical resistivity; Magnetic structure; Curvature; Melts; Magnetic properties; X-ray photoelectron spectra
• ISSN: 0925-8388
• DOI: 10.1016/j.jallcom.2004.05.075

The RMn2 intermetallic compounds are the subject of investigations due to the very interesting Mn magnetic moment instabiltiy connected with a critical nearest neighbor Mn-Mn distance. A ScMn2 single crystal was obtained by the Czochralski method from a levitated melt. The electrical resistivity exhibits a negative curvature at higher temperatures. The magnetization versus magnetic field up to 330 kOe was measured at 4.2 K. XPS investigations revealed a splitting of the valence band due to spin fluctuations. This observed splitting of the Mn 3d states proves that the theoretical model of the electronic structure given by Yamada and Shimizu is correct. Lattice parameters were also measured in temperature range 8-300 K.