Tuning magnetic domain structure in nanoscale La0.7Sr0.3MnO3 islands.
The realization of spin-based devices requires high density, ordered arrays of magnetic materials with a high degree of spin polarization at surfaces. We have synthesized, for the first time, highly spin polarized complex magnetic oxide nanostructures embedded in a paramagnetic matrix by electron beam lithography and ion implantation. Imaging the magnetic domains with X-ray photoemission electron microscopy and magnetic force microscopy reveals a delicate balance between magnetocrystalline, magnetoelastic, and magnetostatic energies that can be tuned by the choice of SrTiO3 substrate orientation, film thickness, island size, and island shape.
Takamura
Yayoi
Y
Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, California 94720, USA.
Chopdekar
Rajesh V
RV
Scholl
Andreas
A
Doran
Andrew
A
Liddle
J Alexander
JA
Harteneck
Bruce
B
Suzuki
Yuri
Y
D007811:Lanthanum / Q000737:chemistry*; D008280:Magnetics; D017895:Manganese Compounds / Q000737:chemistry*; D008422:Materials Testing; D008567:Membranes, Artificial; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010087:Oxides / Q000737:chemistry*; D010316:Particle Size; D013324:Strontium / Q000737:chemistry*
D017895:Manganese Compounds; D008567:Membranes, Artificial; D010087:Oxides; C027424:manganese oxide; D007811:Lanthanum; D013324:Strontium