Abstract
The p-type InMnP:Be epilayers were prepared by the sequential growth of Mn/InP:Be bilayers using molecular-beam-epitaxy and the subsequent in-situ annealing at 200-300 °C. In triple-axis x-ray diffraction patterns, the samples revealed a shoulder peak indicative of intrinsic InMnP. The ferromagnetic transition in InMnP:Be was observed to occur at the elevated temperature of ∼140 K, and the ferromagnetic spin-domains clearly appeared in magnetic force microscopy images. The improved ferromagnetic properties are attributed to the increased p-d hybridation due to high p-type conductivity of InMnP:Be (p ∼ 1020cm-3). The results suggest that enhanced ferromagnetism can be effectively obtained from Be-codoped InMnP.
Original language | English |
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Article number | 192109 |
Journal | Applied Physics Letters |
Volume | 99 |
Issue number | 19 |
DOIs | |
State | Published - 7 Nov 2011 |