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Magnetic and transport properties of structural variants of Remeika phases: Th3Ir4Ge13 and U3Ir4Ge13

MPG-Autoren
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Gumeniuk,  Roman
Roman Gumeniuk, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Schnelle,  Walter
Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Leithe-Jasper,  Andreas
Andreas Leithe-Jasper, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Grin,  Yuri
Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Zitation

Gumeniuk, R., Kvashnina, K. O., Schnelle, W., Leithe-Jasper, A., & Grin, Y. (2015). Magnetic and transport properties of structural variants of Remeika phases: Th3Ir4Ge13 and U3Ir4Ge13. Physical Review B, 91(9): 094110, pp. 1-10. doi:10.1103/PhysRevB.91.094110.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0026-BF89-5
Zusammenfassung
Th3Ir4Ge13 and U3Ir4Ge13 crystallize with primitive cubic Tm3Co4Ge13 and noncentrosymmetric rhombohedral HT-Y3Pt4Ge13 type of structures, respectively, which are derivatives of the cubic Yb3Rh4Sn13 prototype. Measurements of magnetic susceptibility, electrical resistivity, specific heat, thermopower, and thermal conductivity reveal that Th3Ir4Ge13 is a diamagnetic bad metal and undergoes a first-order phase transition at approximate to 200 K. Charge-density wave (CDW) and structural phase-transition scenarios for Th3Ir4Ge13 are discussed. U3Ir4Ge13 is Curie paramagnetic (mu(eff) = 4.05 mu(B)) and orders ferromagnetically at T-C = 15 K. For U3Ir4Ge13 the oxidation state of U is investigated by x-ray absorption spectroscopy. The U 5f electrons in this compound are predominantly of itinerant nature.