TY - JOUR
T1 - Composition dependence of magnetic properties in perpendicularly magnetized epitaxial thin films of Mn-Ga alloys
AU - Mizukami, S.
AU - Kubota, T.
AU - Wu, F.
AU - Zhang, X.
AU - Miyazaki, T.
AU - Naganuma, H.
AU - Oogane, M.
AU - Sakuma, A.
AU - Ando, Y.
PY - 2012/1/18
Y1 - 2012/1/18
N2 - Mn-Ga binary alloys show strong magnetism and large uniaxial magnetic anisotropy even though these alloys do not contain any noble, rare-earth metals or magnetic elements. We investigate the composition dependence of saturation magnetization M S and uniaxial magnetic anisotropy K u in epitaxial films of Mn xGa 1-x alloys (x∼0.5-0.75) grown by magnetron sputtering. The M S values decrease linearly from approximately 600 to 200 emu/cm3 with increasing x, whereas the K u values decrease slightly from approximately 15 to 10 Merg/cm3 with increasing x. These trends are distinct from those for known tetragonal hard magnets obtained in a limited composition range in Mn-Al and Fe-Pt binary alloys. These data are analyzed using a localized magnetic moment model.
AB - Mn-Ga binary alloys show strong magnetism and large uniaxial magnetic anisotropy even though these alloys do not contain any noble, rare-earth metals or magnetic elements. We investigate the composition dependence of saturation magnetization M S and uniaxial magnetic anisotropy K u in epitaxial films of Mn xGa 1-x alloys (x∼0.5-0.75) grown by magnetron sputtering. The M S values decrease linearly from approximately 600 to 200 emu/cm3 with increasing x, whereas the K u values decrease slightly from approximately 15 to 10 Merg/cm3 with increasing x. These trends are distinct from those for known tetragonal hard magnets obtained in a limited composition range in Mn-Al and Fe-Pt binary alloys. These data are analyzed using a localized magnetic moment model.
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U2 - 10.1103/PhysRevB.85.014416
DO - 10.1103/PhysRevB.85.014416
M3 - Article
AN - SCOPUS:84860169282
SN - 0163-1829
VL - 85
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 1
M1 - 014416
ER -