It is a pleasure to announce that, on 17.3.2023, two project researchers, P. Veřtát and M. Rameš successfully defended their doctoral thesis:
P. Veřtát, Characterisation of Martensitic Phases in Ni-Mi-Ga-based Heusler Alloys
Abstract: Presented doctoral dissertation deals with the studies of the low-symmetry phases (martensites) of Ni-Mn-Ga-based Heusler alloys, especially by the means of the X-ray and neutron diffraction. Focus is given on the fundamental research in several pivotal topics of the field. Besides, the emphasis is put on the standardisation of several advanced diffraction methods suitable for the characterisation of twinned martensite structure and microstructure.
Links:
Publication record at CVUT DSpace
M. Rameš, Magnetická anizotropie Heuslerových slitin především na bázi Ni-Mn-Ga (Magnetic Anisotropy based predominantly on Heusler alloys Ni-Mn-Ga)
Abstract:
Doctoral thesis deals with study of various types of magnetic anisotropy of Heusler alloys based predominantly on Ni-Mn-Ga taking various sample forms, such as thin films, foil, polycrystals and single crystals. It delas mainly with magnetocrystalline anisotropy, which is a driving force of magnetically induced reorientation and magnetic field induced strain. Adequate attention is paid to shape anisotropy, because correction for the anisotropy is critical for analysis of magnetocrystalline anisotropy in magnetically open samples studied in the thesis. The most detailed study was performed at recently discovered non-modulated martensites of single-crystalline alloy Ni-Mn-Ga-Co-Cu, which exhibits magnetic field induced strain up to 12%, being attractive for applications.
Links:
Publication record at CVUT DSpace
Congratulations to the fresh PhDs and their supervisor O. Heczko (in the middle) !
