0585457 - FZÚ 2025 RIV CH eng J - Journal Article
Vokoun, David - Lo, Y.H. - Heczko, Oleg - Samal, Sneha Manjaree - Hu, C. T.
Microstructure and magnetic properties of Fe67.6-Pd32-In0.4 (at.%) shape memory melt-spun ribbons.
Materials. Roč. 17, č. 7 (2024), č. článku 1674. E-ISSN 1996-1944
R&D Projects: GA ČR(CZ) GA24-10334S; GA MŠMT(CZ) EH22_008/0004591
Institutional support: RVO:68378271
Keywords : Fe-Pd shape memory alloy * martensitic transformation * multiferroic alloys * X-ray diffraction * magnetically induced strains
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.4, year: 2022
Method of publishing: Open access

Fe-~30 at.%Pd is a ferromagnetic shape memory alloy (SMA) with a reversible thermoelastic fcc-fct phase transformation. The advantage of adding a small amount of Indium to Fe-Pd SMAs is, among other things, the upward shift of the transformation temperatures, which allows us to maintain the material in the martensitic state (fct structure) at room temperature. In this work, we study the microstructure and the magnetic properties of nominally Fe67.6-Pd32-In0.4 (at.%) meltspun ribbons. Energy-dispersive spectroscopy analysis showed a certain level of non-uniformity of Indium distribution in the as-spun ribbon. However, the attempt to homogenize the ribbon by annealing at 1273 K for 120 h resulted in an unfavoured structural change to bct martensite. Magneto strains induced by a 9 kOe magnetic field reached over 400 ppm for certain field orientations, which is around four times more than the magneto strains of near-binary Fe-Pd shape memory alloys.
Permanent Link: https://hdl.handle.net/11104/0354826