Magnetic and thermal responses triggered by structural changes in the double perovskite Sr 2YRuO 6

P. L. Bernardo*, L. Ghivelder, G. G. Eslava, H. S. Amorim, E. H.C. Sinnecker, I. Felner, J. J. Neumeier, S. García

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Among double perovskites, the interpretation of the magnetic, thermal and transport properties of Sr 2YRuO 6 remains a challenge. Characterization using different techniques reveals a variety of features that are not understood, described as anomalous, and yields contradictory values for several relevant parameters. We solved this situation through detailed susceptibility, specific heat, thermal expansion and x-ray diffraction measurements, including a quantitative correlation of the parameters characterizing the so-called anomalies. The emergence of short-range magnetic correlations, surviving well above the long-range transition, naturally accounts for the observed unconventional behavior of this compound. High resolution x-ray powder diffraction and thermal expansion results conclusively show that the magnetic and thermal responses are driven by lattice changes, providing a comprehensive scenario in which the interplay between the spin and structural degrees of freedom plays a relevant role.

Original languageEnglish
Article number486001
JournalJournal of Physics Condensed Matter
Volume24
Issue number48
DOIs
StatePublished - 5 Dec 2012

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