Mixed magnetic phases in (Ga,Mn)As epilayers

Abstract

Two different ferromagnetic-paramagnetic transitions are detected in (Ga,Mn)As/GaAs(001) epilayers from ac susceptibility measurements: transition at a higher temperature results from (Ga,Mn)As cluster phases with [110] uniaxial anisotropy and that at a lower temperature is associated with a ferromagnetic (Ga,Mn)As matrix with <100> cubic anisotropy. A change in the magnetic easy axis from [100] to [110] with increasing temperature can be explained by the reduced contribution of <100> cubic anisotropy to the magnetic properties above the transition temperature of the (Ga,Mn)As matrix.

References in corpus (6)

• Hole-mediated ferromagnetism in tetrahedrally coordinated semiconductors
• Mn Interstitial Diffusion in (Ga,Mn)As
• Giant Planar Hall Effect in Epitaxial (Ga,Mn)As Devices
• Theory of Magnetic Anisotropy in III_{1-x}Mn_{x}V Ferromagnets
• Ferromagnetic resonance study of free hole contribution to magnetization and magnetic anisotropy in modulation-doped Ga${}_{1-x}$Mn${}_x$As/Ga${}_{1-y}$Al${}_y$As:Be
• Relation among concentrations of incorporated Mn atoms, ionized Mn acceptors, and holes in p-(Ga,Mn)As epilayers

Cited by in corpus (13)

• Reorientation Transition in Single-Domain (Ga,Mn)As
• Perpendicular magnetization reversal, magnetic anisotropy, multi-step spin switching, and domain nucleation and expansion in Ga1-xMnxAs films
• Magneto crystalline anisotropies in (Ga,Mn)As: A systematic theoretical study and comparison with experiment
• Piezo-control of magnetic anisotropy in GaMnAs: Reversible manipulation of magnetization orientation and irreversible magnetization switching
• Evolution of the magnetic anisotropy with carrier density in hydrogenated (Ga,Mn)As
• Magnetic anisotropy switching in (Ga,Mn)As with increasing hole concentration
• Distribution of magnetic domain pinning fields in GaMnAs ferromagnetic films
• Dynamic relaxation of magnetic clusters in a ferromagnetic (Ga,Mn)As epilayer
• Strain, magnetic anisotropy, and anisotropic magnetoresistance in (Ga,Mn)As on high-index substrates: application to (113)A-oriented layers
• Evidence of metallic clustering in annealed Ga1-xMnxAs from atypical scaling behavior of the anomalous Hall coefficient
• Effect of the shape anisotropy on the magnetic configuration of (Ga,Mn)As and its evolution with temperature
• Determining Curie temperature of (Ga,Mn)As samples based on electrical transport measurements: low Curie temperature case
• Out-of-plane magnetization reversal processes of (Ga,Mn)As with two different hole concentrations