N. V. Volkova, V. V. Chistyakov, E. I. Patrakov, S. M. Emelyanova
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引用次数: 0
Abstract
The structure and electrical resistance of the alloy Ni45Mn46In9 were studied. At room temperature, Ni45Mn46In9 is ordered into the cubic structure L21, characteristic of Heusler alloys. Throughout the entire temperature range from 77 to 1100 K, a large specific resistance and negative temperature coefficient of resistance are observed. Conductivity obeys Mott’s law T–1/4 with the addition of a metal contribution. The specific features observed in the temperature dependence of the electrical resistance curve suggest that in this alloy the phase transition between the cubic austenitic phase and martensitic phase with lower symmetry, characteristic of ferromagnetic nonstoichiometric Heusler alloys, occurs at an unusually high temperature.
期刊介绍：
High Temperature is an international peer reviewed journal that publishes original papers and reviews written by theoretical and experimental researchers. The journal deals with properties and processes in low-temperature plasma; thermophysical properties of substances including pure materials, mixtures and alloys; the properties in the vicinity of the critical point, equations of state; phase equilibrium; heat and mass transfer phenomena, in particular, by forced and free convections; processes of boiling and condensation, radiation, and complex heat transfer; experimental methods and apparatuses; high-temperature facilities for power engineering applications, etc. The journal reflects the current trends in thermophysical research. It presents the results of present-day experimental and theoretical studies in the processes of complex heat transfer, thermal, gas dynamic processes, and processes of heat and mass transfer, as well as the latest advances in the theoretical description of the properties of high-temperature media.
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