Thin films of the europium monochalcogenides, EuS, EuSe, and EuTe, have been produced using pulsed laser deposition on to heated quartz substrates. The films show a high degree of orientation of the (001) planes parallel to the substrate. In optical absorption, the shift of the band edge on cooling below their Curie/Néel temperatures is clearly seen.
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Mulloy et al. (1993) studied this question.
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