Influence of Chemical Composition on the Curie Temperature Change in Amorphous Alloys |
| B. Jeż
Department of Technology and Automation, Faculty of Mechanical Engineering and Computer Science, Czestochowa University of Technology, al. Armii Krajowej 19c, 42-200 Częstochowa, Poland |
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| Amorphous alloys are characterized by a disordered structure. The arrangement of atoms is chaotic and it is difficult to determine the parameters describing their properties. In soft magnetic ferromagnets, one of the main parameters describing their applicability is the Curie temperature. However, in amorphous materials, due to their metastable nature, the Curie temperature occurs in a rather narrow range. Using the measurements of the magnetic saturation polarization as a function of temperature and the critical exponent β=0.36, the value of the Curie temperature can be determined. The paper presents the results of μ0M(T)1/β tests carried out for two amorphous alloys with similar chemical composition. The influence of chemical composition on the course of the μ0M(T) curve and changes in the share of characteristic areas describing rearrangements of atoms in the structure of alloys were observed. |
DOI:10.12693/APhysPolA.144.281 topics: bulk amorphous alloys, Curie temperature, coercieve field, soft magnetic properties |