|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Advanced Magnetic Materials for Energy and Power Conversion Applications
||B-6: Tuning of Magnetic Properties of Heusler-type Glass-coated Microwires
||Valentina Zhukova, Mihail Ipatov, Juan Jose del Val, Arcady Zhukov
|On-Site Speaker (Planned)
Studies of Heusler alloy have attracted considerable interest owing to an interesting features like large magnetic field-induced strain, the ferromagnetic shape-memory effect, magnetic field induced martensitic transition, a substantial magnetocaloric effect (MCE) and the half-metallic behavior.
For increasing of the heat exchange rate the use of either thin wires or thin films is beneficial. Hence, we performed attempt to prepare Heusler-type microwires using Taylor-Ulitovsky method.
As-prepared microwires present magnetoresistance effect and considerable dependence of magnetization, M, on magnetic field values attributed to the magnetic and atomic disorder.
Annealing of the samples resulted in a drastic change of magnetic properties: a ferromagnetic ordering with Curie temperature near room temperature. We observed the hysteresis on dependence of resistance R, on temperature, T and M(T) dependences in as-prepared and annealed samples. After annealing allowing internal stresses relaxation and disorder reduction we observed features that can be interpreted as the first order phase transformation.
||Planned: Supplemental Proceedings volume