Thermodynamic properties of (Ca,Sr)2RuO4 in magnetic fields

We have studied the influence of a magnetic field on the thermodynamic properties of Ca2-xSrxRuO4 in the intermediate metallic region with tilt and rotational distortions (0.2x0.5). We find strong and anisotropic thermal expansion anomalies at low temperatures, which are suppressed and even reversed...

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Veröffentlicht in:	Physica. B, Condensed matter Condensed matter, 2006-05, Vol.378-380, p.497-498
Hauptverfasser:	Baier, J, Zabel, T, Kriener, M, Steffens, P, Schumann, O, Friedt, O, Freimuth, A, Revcolevschi, A, Nakatsuji, S, Maeno, Y, Lorenz, T, Braden, M
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemical Sciences Material chemistry
Online-Zugang:	Volltext
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Zusammenfassung:	We have studied the influence of a magnetic field on the thermodynamic properties of Ca2-xSrxRuO4 in the intermediate metallic region with tilt and rotational distortions (0.2x0.5). We find strong and anisotropic thermal expansion anomalies at low temperatures, which are suppressed and even reversed by a magnetic field. The metamagnetic transition of Ca1.8Sr0.2RuO4 is accompanied by a large magnetostriction. Furthermore, we observe a strong magnetic-field dependence of cp/T and that can be explained by magnetic fluctuations.
ISSN:	0921-4526 1873-2135
DOI:	10.1016/j.physb.2006.01.215