The temperature and magnetic-field-dependent Kerr signal of layer-by-layer grown 300 Å Gd(0001) on W(110) is analyzed below and above the Curie temperature TC. The changes in the signal shape when passing through TC are discussed. We introduce a new and independent method for accurately determining TC in thin magnetic films in ultrahigh vacuum. As a consequence, discussions of the remanence, the field induced magnetization, and the critical exponent β become more transparent.
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Farle et al. (1993) studied this question.
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