Influence of Hydrostatic Pressure on Magnetic Properties of (Sr,La)(Ru,Cr,Mn)O3

J. Piętosaa, A. Wiśniewskia, R. Puźniaka, S. Kolesnikb, M. Majjigab and B. Dabrowskib aInstitute of Physics, Polish Academy of Sciences al. Lotników 32/46, 02-668 Warsaw, Poland bPhysics Department, Northern Illinois University, De Kalb, IL 60115, USA

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Received: 04 09 2006;

An influence of hydrostatic pressure, P, on phase transition temperature, TC, and spontaneous magnetisation, M0, of selected perovskite ruthenates (SrRuO3, La0.2Sr0.8RuO3, SrRu0.9Mn0.1O3, and SrRu0.9Cr0.1O3) was determined to 12 kbar. A decrease in TC with pressure was found for all of the studied samples. The M0(P) remains unchanged for most of the samples, except for the La0.2Sr0.8RuO3 sample. The weakening of ferromagnetic interactions with increasing pressure is consistent with complex band structure effects related to the modulation of the Ru-O hybridisation by the change of structural distortion.

DOI: 10.12693/APhysPolA.111.159 PACS numbers: 75.30.-m, 75.30.Kz