Influence of Ti4+ on the magnetic state of CaRu1-xTixO3
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In order to shed more light on the character of magnetic correlations at low temperatures in CaRuO3, the delicate effect of substituting nonmagnetic Ti4+ for Ru4+ in low concentrations (0.5-15%) has been investigated by magnetization, AC-susceptibility and specific heat measurements. Despite the clear features in magnetic measurement data at 34K no specific heat anomaly has been observed, nevertheless, two temperature regions with different magnetic characters have been identified. . In pure CaRuO3 sisignificant low-temperature upturn of C/T is visible below 15 K. This feature is suppressed by Ti substitution. (c) 2007 Elsevier B.V. All rights reserved.
Keywords:ruthenates / magnetism / specific heat / non-Fermi liquid / spin glass
Source:Journal of Magnetism and Magnetic Materials, 2007, 316, 2, E699-E702
- Joint European Magnetic Symposia (JEMS 06), Jun 26-29, 2006, San Sebastian, Spain