PALENZONA A.

U14Au51 and UAu2 were recently demonstrated the two correct phases stable at room temperature in the U-Au system. Magnetic susceptibility (1.5–300 K) and electrical resistivity (10–800 K) measurements were performed in samples of both phases. Magnetic susceptibility temperature behaviour gives evidences of an antiferromagnetic transition at 23...

The new phase View the MathML source) was examined via the temperature dependences of the lattice parameters (10–300 K), magnetic susceptibility (1.5–300 K) and electrical resistivity (0.3–300 K). Different Ce valences (+4 and +3) for different crystallographic sites are proposed from magnetic data and are supported by previous structural...

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There is presently a general agreement that the simple inter-metallic compound MgB2 is a conventional, phonon mediated, Superconductor, and that the anomalies in its behaviour can be consistently explained by the existence of two different gaps. We present a study of the complex conductivity as a function of temperature in pure and Al-doped...

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The electrical resistivity of the R5Si3 phases with R = Gd, Th, Yb, Lu, Y has been measured in the 10-800 K temperature range. The compounds of Gd and Th exhibit one transformation point, which can be ascribed to magnetic transitions. The temperature dependence of the resistivity of Y5Si3 and Lu5Si3 has been described by a combination of the...