The magneto-optical Kerr effect is used to study epitaxial MnxGe1-x/Ge (100) films grown at different substrate temperatures and Mn concentrations. The samples are magnetic at low temperature (5 K) and lose this property as the measuring temperature is raised. Negligible hysteresis is observed for the as-deposited samples. After thermal annealing, the magnetic character is enhanced as evidenced by an increase of saturation and the appearance of coercivity. Films heated in air have larger hysteresis and maintain a magnetic response up to room temperature.
Magneto-optical properties of epitaxial MnxGe1-x films.
PINTO, Nicola;GUNNELLA, Roberto;MURRI, Roberto Vittorio
2003-01-01
Abstract
The magneto-optical Kerr effect is used to study epitaxial MnxGe1-x/Ge (100) films grown at different substrate temperatures and Mn concentrations. The samples are magnetic at low temperature (5 K) and lose this property as the measuring temperature is raised. Negligible hysteresis is observed for the as-deposited samples. After thermal annealing, the magnetic character is enhanced as evidenced by an increase of saturation and the appearance of coercivity. Films heated in air have larger hysteresis and maintain a magnetic response up to room temperature.File in questo prodotto:
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