The new phases Ca3Pt4+xGe13−y (x = 0.1; y = 0.4; space group I213; a = 18.0578(1) Å; RI = 0.063; RP = 0.083) and Yb3Pt4Ge13 (space group P42cm; a = 12.7479(1) Å; c = 9.0009(1) Å; RI = 0.061, RP = 0.117) are obtained by high-pressure, high-temperature synthesis and crystallize in new distortion variants of the Pr3Rh4Sn13 type. Yb3Pt4Ge13 features Yb in a temperature-independent non-magnetic 4f14 (Yb2+) configuration validated by X-ray absorption spectra and resonant inelastic X-ray scattering data. Ca3Pt4+xGe13−y is diamagnetic (χ0 = −5.05 × 10−6 emu mol−1). The Sommerfeld coefficient γ = 4.4 mJ mol−1 K−2 for Ca3Pt4+xGe13−y, indicates metallic properties with a low density of states at the Fermi level in good agreement with electronic structure calculation (N(EF) = 3.3 eV−1/f.u.)); the Debye temperature (θD) is 398 K. / Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:27796 |
| Date | January 2012 |
| Creators | Gumeniuk, Roman, Akselrud, Lev, Kvashnina, Kristina O., Schnelle, Walter, Tsirlin, Alexander A., Curfs, Caroline, Rosner, Helge, Schöneich, Michael, Burkhardt, Ulrich, Schwarz, Ulrich, Grin, Yuri, Leithe-Jasper, Andreas |
| Publisher | Royal Society of Chemistry |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | doc-type:article, info:eu-repo/semantics/article, doc-type:Text |
| Source | Dalton transactions 2012;41:6299–6309, ISSN: 1477-9226 |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 10.1039/c2dt30339f |
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