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We present a high-resolution x-ray-scattering study of the charge-density-wave modulation in chromium. The wave vector at $2Q$ was found to vary continuously between 170 and 10 K, consistent with the results of earlier neutron-diffraction studies of the magnetic wave vector at Q. Lock-in transitions, such as have been observed in rare-earth magnets, are apparently not present in chromium.
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Gibbs et al. (1988) studied this question.
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