X-ray fluorescence and DTA-specific heat measurements were performed on several samples of the Hf-Fe phase system, at 50:50%, and 33:67% concentrations. In the first concentration range the possibility of an ordered compound formation has still been unresolved. In the second, a strong dependence of structure and magnetic properties on various external parameters has been found. The presented investigations provide some additional data about the concentration and temperature dependence of structural and magnetic stability in these two particularly interesting domains of concentration of the system.4th Yugoslav-Materials-Research-Society Conference, Sep 10-14, 2001, Herceg Novi, Yugoslavi
