We investigate the magnetic properties of Mnx Ge1x =Ge(1 0 0) films. We show that the choice of growth temperature and Mn content is crucial for achieving optimal magnetic performance. With a substrate temperature of 160C during film deposition, and Mn concentration between 2.7% and 4.4%, hysteresis is observed up to about 250 K. However, the magnetic loop maintains a saturating behaviour at high fields up to room temperature. For larger Mn concentrations the magnetic response is strongly suppressed, suggesting a possible segregation of manganese.

Toward room temperature ferromagnetism of Ge:Mn systems

PINTO, Nicola;MURRI, Roberto Vittorio
2004-01-01

Abstract

We investigate the magnetic properties of Mnx Ge1x =Ge(1 0 0) films. We show that the choice of growth temperature and Mn content is crucial for achieving optimal magnetic performance. With a substrate temperature of 160C during film deposition, and Mn concentration between 2.7% and 4.4%, hysteresis is observed up to about 250 K. However, the magnetic loop maintains a saturating behaviour at high fields up to room temperature. For larger Mn concentrations the magnetic response is strongly suppressed, suggesting a possible segregation of manganese.
2004
262
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11581/203160
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