Abstract
Magnetic and transport properties of CaMn1-xRuxO 3 (x=0;0.1;0.15) perovskites were investigated in the temperature range 4.2-280 K, magnetic fields up to 15 kOe and hydrostatic pressure up to 12 kbar. It was found that for a substitution of x=0.1, an applied pressure of 12 kbar shifts up the magnetic transition temperature by ∼14 K and simultaneously drastically suppresses the ferromagnetic metallic phase. For x=0.15, the application of pressure reduces transition temperature by about -0.28 K/kbar and suppresses the FM phase in a less pronounced manner. Observed changes in resistivity and magnetoresistance of CaMn0.9Ru 0.1O3 are described by suppression of the double-exchange interactions under pressure. They are discussed in the context of the phase separation and valency effects.
Original language | English |
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Article number | 024403 |
Pages (from-to) | 024403-1-024403-5 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 70 |
Issue number | 2 |
DOIs | |
State | Published - 1 Jul 2004 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics