Abstract
By considering the valence-electron concentration of transition-metal alloys and compounds, we develop high-entropy alloy with 8.7 electrons per atom, which is identical to that of Invar. We carry out x-ray diffraction, scanning electron microscopy, magnetization, thermal expansion, and elastic modulus measurements, by which we show that the HEA alloy indeed carries Invar properties. This is evidenced particularly by the observed spontaneous volume magnetostriction and the lattice softening covering a broad temperature-range around the ferromagnetic Curie temperature.
- Received 18 December 2020
- Accepted 8 March 2021
DOI:https://doi.org/10.1103/PhysRevMaterials.5.044406
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