TY - JOUR
T1 - Magnetic and thermal responses triggered by structural changes in the double perovskite Sr 2YRuO 6
AU - Bernardo, P. L.
AU - Ghivelder, L.
AU - Eslava, G. G.
AU - Amorim, H. S.
AU - Sinnecker, E. H.C.
AU - Felner, I.
AU - Neumeier, J. J.
AU - García, S.
PY - 2012/12/5
Y1 - 2012/12/5
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84869015096&partnerID=8YFLogxK
U2 - 10.1088/0953-8984/24/48/486001
DO - 10.1088/0953-8984/24/48/486001
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AN - SCOPUS:84869015096
SN - 0953-8984
VL - 24
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
IS - 48
M1 - 486001
ER -