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J. Phys. IV France
Volume 05, Number C2, Février 1995
IIIrd European Symposium on Martensitic Transformations
Page(s) C2-99 - C2-103
IIIrd European Symposium on Martensitic Transformations

J. Phys. IV France 05 (1995) C2-99-C2-103

DOI: 10.1051/jp4:1995215

Electric Transport Properties of the B2 to R Phase Transition in TiNiFe Alloy

A. Canales, F. Morales, R. Escudero and D. Rios-Jara

Instituto de Investigaciones en Materiales, UNAM, Apdo. postal 70-360, 04510 México D.F., México

Electric transport measurements were performed as a function of temperature across the B2 to R phase transition in a TiNi-5wt% Fe alloy, by means of electric resistivity, thermoelectric power, magnetic susceptibility and point contact spectroscopy. The first derivative of resistivity, magnetic susceptibility and thermoelectric power with temperature shows a peak at the same characteristic temperature. At lower temperatures, the resistance vs. temperatures curves revealed a small minimum at about Tc≈9K, that could be associated with some electronic transition. The dV/dl vs V curves, taken from the point contact experiments, also show asymmetric behavior at low temperatures (about 10K), indicating a kind of electronic scattering. No martensitic transformation occurred in this high Fe content alloy.

© EDP Sciences 1995