Print Email Facebook Twitter Structural and magnetic properties of YNi4-xCoxSi alloys Title Structural and magnetic properties of YNi4-xCoxSi alloys Author Gai, H. (TU Delft RST/Fundamental Aspects of Materials and Energy) van Dijk, N.H. (TU Delft RST/Fundamental Aspects of Materials and Energy) Brück, E.H. (TU Delft RST/Fundamental Aspects of Materials and Energy) Date 2024 Abstract The transition-metal based alloy system YNi 4-xCo xSi shows a second-order ferromagnetic-to-paramagnetic transition near room temperature. Here, the magnetic structure, the magnetocaloric properties and the magnetic anisotropy of YNi 4-xCo xSi (x = 0–4) are investigated. For x = 3.5, 3.75 and 4.0 a Curie temperature near room temperature is observed with T C = 250, 283 and 310 K, respectively. In orientated YNi 4-xCo xSi powder samples the c axis of the hexagonal crystal structure is found to be the easy magnetic axis, with a large dominant K 2 anisotropy constant (K 2 > K 1 > 0). The magnetic structure and the preferred atomic position for Ni are demonstrated by neutron diffraction measurements. We have found a dramatic decrease in the magnetic moment at the 3 g site in the CaCu 5-type structure (space group P6/mmm), the saturation magnetization and the Curie temperature with increasing Ni concentration. To reference this document use: http://resolver.tudelft.nl/uuid:75b47724-a226-4fe9-82ca-4b5824df1810 DOI https://doi.org/10.1016/j.jallcom.2024.174116 ISSN 0925-8388 Source Journal of Alloys and Compounds, 986 Part of collection Institutional Repository Document type journal article Rights © 2024 H. Gai, N.H. van Dijk, E.H. Brück Files PDF 1-s2.0-S0925838824007035-main.pdf 10.27 MB Close viewer /islandora/object/uuid:75b47724-a226-4fe9-82ca-4b5824df1810/datastream/OBJ/view