Publications by authors named "Wanda Yang"
Axial Zero Thermal Expansion with Good Mechanical Strength in the Ni-Doped Kagome HoFe Magnets.
ACS Appl Mater Interfaces
December 2024
Article Synopsis
- Zero thermal expansion (ZTE) metals are highly desired for their ability to maintain dimensional stability, but their use is limited due to a small temperature range and brittleness.
- Researchers developed a new ZTE alloy (HoFeNi) by incorporating nickel, which broadens the operable temperature range while enhancing the ferromagnetic properties of the iron within it.
- The addition of excess iron improves the alloy's compressive strength and maintains ZTE characteristics, suggesting that this chemical design could lead to the creation of more effective ZTE alloys in the future.
Article Synopsis
- The high-entropy strategy is becoming popular in functional materials design due to its ability to create materials with unique properties by integrating diverse components.
- The study introduces "high-entropy magnets (HEMs)" that combine various magnetic compounds, like (Ti,Zr,Hf,Nb,Fe)Fe, resulting in complex magnetic behaviors influenced by temperature changes.
- Notably, the TiZrHfNbFe compound exhibits remarkable thermal expansion properties, achieving near-zero expansion across a wide temperature range due to the interactions of magnetic moments.