Applied Physics Letters · 2011 · 32 citations · 19 references
Magnetic PropertiesEngineeringMagnetic MaterialsMagnetoresistanceMagnetismEpitaxial GrowthMagnetic MomentThermal StabilityMaterials ScienceMaterials EngineeringCarbon DopingMagnetic MaterialMicro-magnetic ModelingFerromagnetismMaterial AnalysisNatural SciencesApplied PhysicsMaterial PerformanceThin FilmsMagnetic PropertyFunctional Materials
The thermal stability of epitaxial Mn5Ge3 and carbon-doped Mn5Ge3 films was investigated by combining structural and magnetic characterizations. It is shown that ferromagnetic Mn5Ge3 films transform into antiferromagnetic Mn11Ge8 upon post-annealing at 650 °C whereas carbon-doped Mn5Ge3 conserves its ferromagnetism up to 850 °C. The magnetic properties of Mn5Ge3 (Curie temperature, magnetization at saturation, and magnetic moment per Mn atom) are found to undergo a reversible transition upon carbon doping and its extraction during thermal annealing. The stability of carbon-doped Mn5Ge3 films will be discussed in terms of carbon filling of interstitial sites of Mn5Ge3, which prevents Ge diffusion from the substrate.
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Electrical creation of spin polarization in silicon at room temperature
Saroj P. Dash, Sandeep Sharma, R. S. Patel et al. · Nature · 2009 · 610 citations
Epitaxial ferromagnetic Mn5Ge3 on Ge(111)
Changgan Zeng, Steven C. Erwin, L. C. Feldman et al. · Applied Physics Letters · 2003 · 185 citations