Watching a magnetic transition unfold. (VIDEO)
Caption
Polarised neutron imaging reveals how the magnetic state changes inside three bulk Fe–Rh alloys as they are heated from the antiferromagnetic to the ferromagnetic state and cooled back to the antiferromagnetic state. The Fe₅₀Rh₅₀ sample (left) transforms gradually and unevenly over a broad temperature range, whereas the Rh-richer Fe₄₉Rh₅₁ (top) and Fe₄₈Rh₅₂ (bottom right) alloys transform much more uniformly and over a narrower temperature range during both heating and cooling.
Credit
Commun Mater (2026)
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License
CC BY-NC-ND