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Information × Registration Number 0211U009428, 0111U006521 , R & D reports Title Metamagnitostructural phase transitions in Heusler alloys with an enhanced sensitivity to the magnetic field, the first yar of project implementation. popup.stage_title Head Baryakhtar, Kokorin Ivanov, Registration Date 16-12-2011 Organization Institute of magnetism of NASU popup.description2 Comparative consideration of perspective alloys Ni-Mn-Sn, Ni-Mn-Co-Ga, Ni-Mn-Cu-Ga and Ni-Mn-Sb systems was spent during the 2-nd period. The elaboration of ways of influence on structural transformations in the alloys of Ni-Mn-Ga and Ni-Mn-Sb systems was made. On an example of Ni-Mn-Ga alloys it has been proved that long annealing of samples (850?С 50h) leads to the essential narrowing of a hysteresis of martensitic transformations. The temperature hysteresis width ?T = 2 К has been reached. The influence of an additional alloying by the 4-th and 5-th element was considered. Considering that magnetocaloric materials should be economically accessible, i.e., they haven't been involve expensive and scarce components, system Ni-Mn-Sb alloys, as most economically the comprehensible have been chosen. The alloying of this system cobalt and silicon leads to the narrowing of a temperature hysteresis of structural transformation, without changing size of a difference of the magnetic moments in austenitic and martensitic phases. Alloys of system Ni-Mn-Sb satisfy the requirements, extending to the magnetocaloric materials, notably - a narrow hysteresis of martensitic transformations and big difference of the magnetic moments of the austenitic and martensitic phases. Product Description popup.authors Бар'яхтар В.Г. Козлова Л.Є. Кокорін В.В. Коноплюк С.М. Перекос А.О. popup.nrat_date 2020-04-02 Close