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Schlagwörter:
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Zusammenfassung:
The thermal expansion, (T), of intermediate valent (IV) Sm1-xYxS single crystals has been measured. For x = 0.7, (T) behaves similar to that published for many other IV systems. For x = 0.28 and x = 0.25, gigantic negative (T) peaks at 172 and 275 K as well as distinct low-T anomalies are observed and ascribed to the vicinity of a first-order valence transition.
