physica status solidi (b) · 2015 · 11 citations · 16 references
Natural SciencesMaterials SciencePhysicsElectronic MaterialsNanomaterialsNanotechnologyCurie TemperatureEpitaxial GrowthNanoscale MaterialsNanostructured Electronic MaterialsSemiconductor Crystal GrowthStrain EngineeringElectron Diffraction Pattern AnalysisEpitaxial StrainMagnetic Easy AxisMolecular Beam EpitaxySelected Area Electron DiffractionStrain Effects On Magnetic PropertiesStrain RelaxationTensile Strain
We report on the epitaxial growth of Mn5Ge3 on Ge(001) by molecular beam epitaxy using solid phase epitaxy method. Mn5Ge3 grows as nanoislands, which are randomly distributed over the substrate surface. Select area electron diffraction analysis was used to determine the epitaxial relationship Mn5Ge3(001)[110]//Ge(001)[110], as well as to detect an induced tensile strain along [110] Mn5Ge3 direction to fit the Ge lattice, while the observation of Moiré patterns indicates a complete relaxation along the direction. In-plane and out-of-plane M(H) loops were obtained at 200 K using a vibrating sample magnetometer, it was found that the easy axis of magnetization is perpendicular to the substrate surface and that the crystal magnetic anisotropy is K1 = 9.27 × 105 erg cm−3. The enhancement of the Curie temperature of the nanoislands ∼340 K, which is higher than 296 K of the bulk Mn5Ge3, is attributed to the induced strains.
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Demagnetizing Factors of the General Ellipsoid
J. A. Osborn · Physical Review · 1945 · 2.3K citations
Natural Sciences, Electrical Engineering, Computational Geometry +7
Epitaxial ferromagnetic Mn5Ge3 on Ge(111)
Changgan Zeng, Steven C. Erwin, L. C. Feldman et al. · Applied Physics Letters · 2003 · 186 citations