Title :
MBE growth and magnetic properties of GaSb/MnSb superlattices
Author :
Choi, Jiyoun ; Choi, Jeongyong ; Choi, Sungyoul ; Hong, Soon Cheol ; Cho, Sunglae ; Park, Yongsup ; Lee, K.W. ; Park, Hyun-Min ; Song, Jong Hyun ; Ketterson, J.B.
Author_Institution :
Dept. of Phys., Ulsan Univ., South Korea
fDate :
26 June-2 July 2005
Abstract :
We have grown a 37-period GaSb(25 Å)/MnSb(2 Å) superlattice on GaAs(001) substrate with 1000 Å GaSb buffer layer by solid-source molecular beam epitaxy. We have observed that the streaky RHEED patterns of GaSb and MnSb were maintained even when the growth was finished in 37 periods, indicating the 2-dimensional layer-by-layer growth of MnSb on GaSb or vice versa. Interestingly, a GaSb(25 Å)/MnSb(2 Å) superlattice showed ferromagnetic ordering up to above 400 K with its coercive field of 380 Oe at 10 K.
Keywords :
III-V semiconductors; ferromagnetic materials; gallium compounds; magnetic semiconductors; manganese compounds; molecular beam epitaxial growth; reflection high energy electron diffraction; substrates; superlattices; 0.038 T; 10 K; 1000 Å; 2 Å; 25 Å; 2D layer-by-layer growth; GaAs [001] substrate; GaSb buffer layer; GaSb-MnSb; GaSb-MnSb superlattices; MBE growth; RHEED patterns; coercive field; ferromagnetic ordering; magnetic properties; solid-source molecular beam epitaxy; Buffer layers; Electrons; Magnetic properties; Magnetic semiconductors; Magnetic superlattices; Molecular beam epitaxial growth; Physics; Semiconductor superlattices; Substrates; Temperature;
Conference_Titel :
Science and Technology, 2005. KORUS 2005. Proceedings. The 9th Russian-Korean International Symposium on
Print_ISBN :
0-7803-8943-3
DOI :
10.1109/KORUS.2005.1507674
