METGLAS 2826B - TRANSPORT, MAGNETIC AND THERMAL-PROPERTIES

We report Hall resistivity, magnetization, heat capacity, and electrical resistivity studies on Metglas 2826B (Fe29Ni49P 14B6Si2) spanning the temperature regime 77 to 800 K. The critical exponents for this system are found to be β=0.40±0.01, δ=5.25±0.10, and γ=1.7±0.1. The magnetic isotherms fit into universal scaling functions over a rather wide range of temperature both above and below Tc. The specific heat exhibits a sharp peak at Tc. The temperature derivative of the electrical resistivity has a marked change at Tc. Although Tc increases slightly on thermal cycling to higher temperatures, the critical exponents are not influenced by this.