Publications in Scientific Journals:
A. Grytsiv, X. Chen, N. Melnychenko-Koblyuk, P. Rogl, E. Bauer, G. Hilscher, H. Kaldarar, H. Michor, E. Royanian, R. Podloucky, M. Rotter, G. Giester:
"Superconductivity and Magnetism in MPt4Ge12, M = Ca, Ba, Sr, Eu";
Journal of the Physical Society of Japan,
X-ray powder data for Ba0.8Ca0.2Pt4Ge12 and X-ray single crystal data for EuPt4Ge12 define cubic body-centered symmetry consistent with novel Ge-based skutterudites SrPt4Ge12 and BaPt4Ge12 (space group Im3). Structural and electron microprobe analysis investigations evidence a complete filling of the icosahedral cages without large atomic displacement parameters. Ba0.8Ca0.2Pt4Ge12 exhibits phonon-mediated superconductivity at Tc = 5.2 K. Density functional theory (DFT) calculations (LDA+U) carried out for EuPt4Ge12 proved that Eu guest atoms strongly stabilize the compound in which the calculated density of states around the Fermi energy essentially consists of hybridized Ge 4p-like and Pt 5d-like states. Low temperature resistivity studies evidence magnetic ordering at Tm ≈1.7 K. Susceptibility measurements reveal a divalent state for europium, in excellent agreement with the DFT calculations.
Ge-based Skutterudite, EuPt4Ge12, X-ray single crystal data, transport properties, electronic structure by DFT (LDA+U)
Electronic version of the publication:
Created from the Publication Database of the Vienna University of Technology.