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The magnetic phase diagram of Ca <sub>1−x</sub> Sr <sub>x</sub> Co <sub>2</sub> As <sub>2</sub> single crystals
14
Citations
10
References
2013
Year
Crystal StructureEngineeringMagnetic ResonanceMagnetic Phase DiagramMagnetic MaterialsMagnetismSuperconductivityQuantum MaterialsMaterials ScienceCa1−xsrxco2as2 SystemPhysicsCrystal MaterialCrystallographySolid-state PhysicQuantum MagnetismTransition Metal ChalcogenidesSpintronicsCaco2as2to FerromagnetismPhase EquilibriumNatural SciencesApplied PhysicsCondensed Matter PhysicsInterlayer SpacingCrystals
We reported the magnetic phase diagram of the Ca1−xSrxCo2As2 system by measuring the transport and magnetic properties of the single crystals. Its ground state evolves from A-type antiferromagnetism (AFM) with large anisotropy for CaCo2As2to ferromagnetism with spins aligned along the c-axis for Ca0.8Sr0.2Co2As2. With further increasing the Sr content, the system would become AFM again but with spins aligned within the ab-plane. For the Sr content above 0.4, the system shows no magnetic order and changes to uncollapsed tetragonal phase. Our results indicate that the magnetic properties in this system are strongly correlated with the interlayer spacing.
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