[1] Univ Grenoble 1, Spectrometrie Phys Lab, CNRS, F-38402 St Martin Dheres, France
[2] CNRS, Lab Thermodynam & PhysicoChim Met, F-38042 Grenoble, France
[3] Univ Warsaw, Inst Expt Phys, PL-00681 Warsaw, Poland
[4] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland