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Information × Registration Number 0220U104119, 0117U000435 , R & D reports Title Variation of physical properties in ferromagnetic shape memory Heusler alloys under the influence of magnetic field and mechanical stress popup.stage_title Head Kokorin Volodymyr V., Доктор фізико-математичних наукKonopliuk Serhii M., Кандидат фізико-математичних наук Registration Date 10-12-2020 Organization Institute of Magnetism NAS of Ukraine and MES of Ukraine popup.description2  X-ray diffractometry and measurements of the electrical impedance in the Ni51.9Mn27.0Ga21.1 allowed to register successive martensitic and magnetic (Curie) transitions with temperature hysteresis between the cooling and heating curves, rather than a separate magnetostructural transition as it followed from thermomagnetic curves. It was found that in the martensitic phase of the Ni51.9Mn27.0Ga21.1, two Curie temperatures are observed, which form a specific temperature hysteresis of the magnetic transition. Magnetic transitions in Ni51.9Mn27.0Ga21.1 were analyzed based on the Arrott method. Despite the existence of temperature hysteresis, it was found that in accordance with the Banerjee criterion, these transitions are second order transitions between the ferro- and paramagnetic phases. The values of the critical exponents for the temperature dependences of spontaneous magnetization and inverse susceptibility near the Curie point are close to those characteristic of the Heisenberg system Product Description popup.authors Koslova Larysa Ye Kokorin Volodymyr V Konoplyuk Serhii M popup.nrat_date 2020-12-10 Close