Some physical properties (thermal expansions, magnetic susceptibilities and heat contents) of EuCu2Si2, YbCu2Si2 and reference compounds CaCu2Si2 and GdCu2Si2 have been measured in the temperature range 300–1000 K. The results obtained together with previous findings show that the valence of EuCu2Si2 is strongly dependent on T (valency, 2.9 at 100 K to 2.3 at 1000 K) while YbCu2Si2 maintains an almost constant valence value of 2.85, at least from 300 to 1000 K. For EuCu2Si2 an approximate determination of the energy required in the electronic process involved is also presented.

HIGH-TEMPERATURE BEHAVIOR OF THE MIXED-VALENCE COMPOUNDS EUCU2SI2, YBCU2SI2 AND THE REFERENCE COMPOUNDS CACU2SI2 AND GDCU2SI2

CANEPA, FABIO MICHELE
1986-01-01

Abstract

Some physical properties (thermal expansions, magnetic susceptibilities and heat contents) of EuCu2Si2, YbCu2Si2 and reference compounds CaCu2Si2 and GdCu2Si2 have been measured in the temperature range 300–1000 K. The results obtained together with previous findings show that the valence of EuCu2Si2 is strongly dependent on T (valency, 2.9 at 100 K to 2.3 at 1000 K) while YbCu2Si2 maintains an almost constant valence value of 2.85, at least from 300 to 1000 K. For EuCu2Si2 an approximate determination of the energy required in the electronic process involved is also presented.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11567/376522
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 10
  • ???jsp.display-item.citation.isi??? 10
social impact