What question did this study set out to answer?

To investigate the antiferromagnetic ordering, atomic magnetic moment, and transition temperatures in single-crystal and polycrystalline samples of ultra-pure chromium.

August 1, 1961Acta Crystallographica

A neutron-diffraction study of very pure chromium

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GBG. E. BaconCarleton College

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Overview

Neutron diffraction study demonstrates grain-dependent antiferromagnetism in ultra-pure chromium, highlighting how microstructure and alloying alter transition temperatures.

Key Points

To investigate the antiferromagnetic ordering, atomic magnetic moment, and transition temperatures in single-crystal and polycrystalline samples of ultra-pure chromium.
Examined high-purity single-crystal and polycrystalline chromium samples containing 0.01% oxygen, 0.001% nitrogen, and 0.0002% metallic impurities by weight using neutron diffraction.
Evaluated magnetic structure across varying grain sizes and measured changes in transition behavior following the addition of 0.5% iron and 0.16% nickel.
Pure chromium lost the majority of its antiferromagnetic ordering at 40 °C, though residual order persisted in polycrystalline samples and increased as grain size decreased.
The magnetic moment localized on the chromium atom well below the Néel temperature was measured at approximately 0.45 μB across all sample types.
Doping the chromium with 0.5% iron and 0.16% nickel lowered the Néel temperature from 40 °C to 26 °C.

Cite This Study

G. E. Bacon (1961) studied this question.

synapsesocial.com/papers/6a8441c0a47fb2e1cdb29f18 https://doi.org/10.1107/s0365110x61002412

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August 1, 1961Acta Crystallographica

A neutron-diffraction study of very pure chromium

View Full Paper

Ask AI

Bookmark

Authors

GBG. E. BaconCarleton College

Discussion

Member takes

Overview

Neutron diffraction study demonstrates grain-dependent antiferromagnetism in ultra-pure chromium, highlighting how microstructure and alloying alter transition temperatures.

Key Points

To investigate the antiferromagnetic ordering, atomic magnetic moment, and transition temperatures in single-crystal and polycrystalline samples of ultra-pure chromium.
Examined high-purity single-crystal and polycrystalline chromium samples containing 0.01% oxygen, 0.001% nitrogen, and 0.0002% metallic impurities by weight using neutron diffraction.
Evaluated magnetic structure across varying grain sizes and measured changes in transition behavior following the addition of 0.5% iron and 0.16% nickel.
Pure chromium lost the majority of its antiferromagnetic ordering at 40 °C, though residual order persisted in polycrystalline samples and increased as grain size decreased.
The magnetic moment localized on the chromium atom well below the Néel temperature was measured at approximately 0.45 μB across all sample types.
Doping the chromium with 0.5% iron and 0.16% nickel lowered the Néel temperature from 40 °C to 26 °C.

Cite This Study

G. E. Bacon (1961) studied this question.

synapsesocial.com/papers/6a8441c0a47fb2e1cdb29f18 https://doi.org/10.1107/s0365110x61002412

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