What question did this study set out to answer?

Investigate how dilute additions of transition metals alter the antiferromagnetic properties and magnetic structure of chromium.

November 11, 1966Physical Review

Antiferromagnetism in Chromium Alloys. I. Neutron Diffraction

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Diffraction study demonstrates electron-concentration-driven magnetic transitions in chromium alloys, highlighting Fermi surface nesting mechanisms.

Investigate how dilute additions of transition metals alter the antiferromagnetic properties and magnetic structure of chromium.
Evaluated magnetic properties of chromium alloys containing small amounts of V, Mn, Nb, Mo, Tc, Ru, Rh, Ta, W, or Re.
Conducted powder and single-crystal neutron-diffraction measurements to determine magnetic moments, wave vectors, and transition temperatures.
Solutes increasing the electron-to-atom ratio (Mn, Tc, Ru, Rh, Re) elevated the Néel temperature up to ~700°K and magnetic moment to ~0.75 μB (compared to 311°K and 0.40 μB in pure Cr), shifting the wave vector to 2π/a at ~1% concentration.
Elements decreasing the ratio (V, Nb, Ta) or maintaining it (Mo, W) suppressed Néel temperatures, magnetic moments, and wave vectors, with Ta showing the strongest suppression.
All examined dopants reduced the transverse-to-longitudinal magnetic transition temperature, with ordered moment variations matching the BCS energy-gap function.

Koehler et al. (1966) studied this question.

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November 11, 1966Physical Review

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Authors

Diffraction study demonstrates electron-concentration-driven magnetic transitions in chromium alloys, highlighting Fermi surface nesting mechanisms.

Investigate how dilute additions of transition metals alter the antiferromagnetic properties and magnetic structure of chromium.
Evaluated magnetic properties of chromium alloys containing small amounts of V, Mn, Nb, Mo, Tc, Ru, Rh, Ta, W, or Re.
Conducted powder and single-crystal neutron-diffraction measurements to determine magnetic moments, wave vectors, and transition temperatures.
Solutes increasing the electron-to-atom ratio (Mn, Tc, Ru, Rh, Re) elevated the Néel temperature up to ~700°K and magnetic moment to ~0.75 μB (compared to 311°K and 0.40 μB in pure Cr), shifting the wave vector to 2π/a at ~1% concentration.
Elements decreasing the ratio (V, Nb, Ta) or maintaining it (Mo, W) suppressed Néel temperatures, magnetic moments, and wave vectors, with Ta showing the strongest suppression.
All examined dopants reduced the transverse-to-longitudinal magnetic transition temperature, with ordered moment variations matching the BCS energy-gap function.

Koehler et al. (1966) studied this question.

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