Crystallization and properties of Mn2FeSi and Mn2FeAl Heusler alloys
Krystalizace a vlastnosti Heuslerových slitin Mn2FeSi a Mn2FeAl
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České vysoké učení technické v Praze
Czech Technical University in Prague
Czech Technical University in Prague
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Špecifickou skupinou kryštalických intermetalík s kubickou FCC štruktúrou sú zlúčeniny nazývané Heuslerove zliatiny. Tieto zliatiny vykazujú rôzne funkčné vlastnosti, ako pamäťová štruktúra alebo magneticko-superelastické a topologické vlastnosti, ktoré pramenia z magnetoelastických väzieb. Praktická časť práce sa zaoberala metalografickou prípravou odlievaných a žíhaných vzoriek Mn2FeAl a Mn2FeSi. Pre získanie väčšej homogenity bola časť vzoriek podrobená žíhaniu. Pre štúdium mikroštruktúry vzoriek bola využitá optická a elektrónová mikroskopia a pre magnetické vlastnosti bol využitý vibračný magnetometer.
A specific group of crystalline intermetallic compounds with a cubic FCC structure are called Heusler alloys. These alloys exhibit various functional properties, such as memory structure, magnetic-superelasticity, and topological properties, which arise from magnetoelastic interactions. The practical part of the work focused on the metallographic preparation of cast and annealed Mn2FeAl and Mn2FeSi samples. To achieve greater homogeneity, a portion of the samples underwent annealing. Optical and electron microscopy were used for the study of the microstructure of the samples, while a vibrating magnetometer was used for studying their magnetic properties.
A specific group of crystalline intermetallic compounds with a cubic FCC structure are called Heusler alloys. These alloys exhibit various functional properties, such as memory structure, magnetic-superelasticity, and topological properties, which arise from magnetoelastic interactions. The practical part of the work focused on the metallographic preparation of cast and annealed Mn2FeAl and Mn2FeSi samples. To achieve greater homogeneity, a portion of the samples underwent annealing. Optical and electron microscopy were used for the study of the microstructure of the samples, while a vibrating magnetometer was used for studying their magnetic properties.