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The anomalous thermal expansion of some rare earth metals

✍ Scribed by B.S Chandrasekhar


Publisher
Elsevier Science
Year
1958
Weight
327 KB
Volume
6
Category
Article
ISSN
0001-6160

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✦ Synopsis


The thermal expansion anomalies in gadolinium, terbium, and dysprosium are shown to be consistent with Zener's views on the exchange interaction between unfilled electron shells. The spin alignment in antiferromagnetic dysprosium is inferred. The possibility of extending the model to the actinide elements is suggested. LA DILATATION THERMIQUE ANORMALE DE QUELQUES METAUX DES TERRES RARES L'auteur montre que les anomalies de dilatation thermique du gadolinium, du terbium et du dysprosium sont en accord avec les conceptions de Zener sur l'interaction d'echange entre des couches Qlectroniques non saturees. On en deduit l'alignement des spins dans le dysprosium antiferromagnetique. Enfin, l'auteur envisage la possibilite d'etendre le modele aux elements actinides. DIE ANOMALE THERMISCHE AUSDEHNUNG EINIGER SELTENER ERDMETALLE Es wird gezeigt, dass die Anomalien der thermischen Ausdehnung in Gadolinium und Dysprosium mit Zeners Auffassung iiber die Austausch-Wechselwirkung zwischen unaufgefiillten Elektronenschalen im Einklang sind. Die Spinausrichtung in antiferromagnetischem Dysprosium wird abgeleitet. Die Moglichkeit einer Ausdehnung des Modells auf die Actiniden wird diskutiert.


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