Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1805189 | Journal of Magnetism and Magnetic Materials | 2007 | 13 Pages |
The erbium-based manganite ErMnO3 has been partially substituted at the manganese site by the transition-metal elements Ni and Co. The perovskite orthorhombic structure is found from x(Ni)=0.2–0.5 in the nickel-based solid solution ErNixMn1−xO3, while it can be extended up to x(Co)=0.7 in the case of cobalt, provided that the synthesis is performed under oxygenation conditions to favor the presence of Co3+. Presence of different magnetic entities (i.e., Er3+, Ni2+, Co2+, Co3+, Mn3+, and Mn4+) leads to quite unusual magnetic properties, characterized by the coexistence of antiferromagnetic and ferromagnetic interactions. In ErNixMn1−xO3, a critical concentration xcrit(Ni)=1/3 separates two regimes: spin-canted AF interactions predominate at x