Magnetic Properties of SrRuO3 and CaRuO3
- 1 February 1968
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 39 (2) , 1327-1328
- https://doi.org/10.1063/1.1656282
Abstract
Magnetization measurements of SrRuO3 and CaRuO3 confirm that SrRuO3 is ferromagnetic with TC = (160±5) °K and that CaRuO3 has antiferromagnetic exchange interactions dominant. They further identify in CaRuO3 a Néel temperature TN = (110±10) °K and parasitic ferromagnetism below TN having a σ0 = (3.2±0.4) × 10−2 emu/g at 4.2°K. High‐field (to 125 kOe) magnetization and neutron‐diffraction data for SrRuO3 are consistent with a reduced spontaneous ferromagnetic moment μ0 = (1.4±0.4) μB and no ordered antiferromagnetic component. Resistivity measurements confirm a low resistivity (ρ−3Ω·cm) at room temperature having a metallic temperature coefficient. It is concluded that both compounds represent spontaneous collective‐electron magnetism and that the reduced moment of SrRuO3 is due to holes in both the up‐spin and down‐spin bands. Antiferromagnetic CaRuO3 is predicted to have narrower ``4d'' bands.This publication has 4 references indexed in Scilit:
- Narrow-band electrons in transition-metal oxidesCzechoslovak Journal of Physics, 1967
- Magnetic Interactions in Ternary Ruthenium OxidesInorganic Chemistry, 1966
- Electric and Magnetic Properties of the Strontium FerratesThe Journal of Chemical Physics, 1965
- Neutron Diffraction Investigation of Magnetic Ordering in the Trifluorides of-Transition ElementsPhysical Review B, 1961