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The temperature dependence of Rayleigh waves in Fe (110), measured by helium atom scattering in the range of 150 to 905 K (0.91 Tc), is shown to provide new information on surface magnetization. The magnetic shifts of the surface phonon frequencies exhibit a large anisotropy, with the [11{}0] direction showing the expected decrease of frequency for increasing temperature, while the [001] direction shows an anomalous increase with temperature. The results are interested in terms of a simple model.
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Benedek et al. (1992) studied this question.
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