Applied Physics Letters · 2011 · 25 citations · 24 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsMagnetic MaterialsMaterials PhysicsCurie TemperatureElectrical ConductivityMagnetic Properties Of SolidsMagnetism In SolidsStrongly Correlated Electron SystemsThermal Properties Of MaterialsElectron CarriersFermi Liquid TheoryLattice Thermal ConductivityMagnetic Materials CharacterizationThermal ConductivityThermal PropertiesThermal TransportThermomagnetic Properties
Structural, magnetic, electrical, and thermal transport properties of antiperovskite compounds AlNxMn3 (x=1,1.1,1.2) have been investigated systematically. With increasing x, the lattice constant increases monotonously while the Curie temperature TC decreases. Both the high TC and small coercive fields consistently indicate AlNxMn3 may be a promising high-temperature soft magnetic material. The resistivity displays T2-dependence below 30 K and the Kadowaki–Woods ratio is about 107.7 μΩ cm/K2, indicating a possible strongly correlated Fermi-liquid behavior in AlNMn3. Further analysis suggests that the electron-type carriers are dominant and the thermal conductivity mainly originates from the lattice contribution.
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