Article

Epitaxial growth and ferrimagnetic properties of Mn film on GaSb(100)

Department of Physics, University of Ulsan, Ulsan 680-749, Republic of Korea
Journal of Applied Physics (impact factor: 2.17). 06/2010; DOI:10.1063/1.3367961 pp.09E304 - 09E304-3
Source: IEEE Xplore

ABSTRACT We report on the epitaxial stabilization and magnetic properties of Mn films on GaSb(100) using molecular beam epitaxy, a follow-up to our previous work on the growth of Mn films on GaAs(100) [Phys. Rev. B 79, 045309 (2009)]. A strong ferrimagnetic ordering was observed which was attributed to the largely expanded lattice parameter resulting from the lattice mismatch with substrate and the enhanced thermal energy with increasing growth temperature. The observed magnetic moment of 1.16μ B / Mn   atom was several times larger than that observed in the Mn/GaAs(100) films due to the lattice constant difference of substrates. The in-plane magnetoresistance behavior demonstrated the magnetic anisotropy that might result from the slightly distorted cubic structure of α -Mn phase under low-dimensional growth.

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Keywords

distorted cubic structure
 
enhanced thermal energy
 
expanded lattice parameter
 
lattice constant difference
 
lattice mismatch
 
magnetic properties
 
Mn films
 
molecular beam epitaxy
 
times larger
 
α -Mn phase
 

Wuwei Feng