Suppression of the enhanced paramagnetic thermal expansion of YMn2 by Fe substitutions

I. S. Dubenko, E. Gratz, A. Lindbaum, A. S. Markosyan, S. A. Markossian, V. E. Rodimin, G. Wiesinger

Publikation: Beitrag in FachzeitschriftArtikelBegutachtung

3 Zitate (Scopus)


The thermal expansion coefficient α of YMn2 just above its Néel temperature (TN = 90 K) is about 45 × 10-6 K-1, it takes a value of 53 × 10-6 K-1 at room temperature and passes through a maximum around 350 K. This unusual behaviour of α(T) and the higher value (if compared with other known spin fluctuation systems such as YCo2) has been attributed to electronic instabilities of the Mn ions. In the present investigation it is shown that - when changing the environment of an individual Mn ion by substituting Mn by Fe - α decreases very quickly with increasing Fe content. This has been considered as a proof that the electronic instabilities of the Mn ions depend very sensitively on the surroundings.

Seiten (von - bis)571-572
FachzeitschriftJournal of Magnetism and Magnetic Materials
AusgabenummerPART 1
PublikationsstatusVeröffentlicht - Jän. 1998
Extern publiziertJa


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