TY - JOUR
T1 - Enhanced Curie temperature and spin polarization in Mn4 Fe Ge3
AU - Chen, T. Y.
AU - Chien, C. L.
AU - Petrovic, C.
N1 - Funding Information:
This work has been supported by NSF, and part of this work was carried out at the Brookhaven National Laboratory which is operated for the U.S. Department of Energy by Brookhaven Science Associates (Contract No. DE-Ac02-98CH10886).
PY - 2007
Y1 - 2007
N2 - Intermetallic ferromagnetic compound Mn5 Ge3, with Curie temperature TC =296 K, a spin polarization of P=42%, and a good lattice match to semiconductors, is a potential spin injector for spintronics. We report the enhanced magnetic properties and spin polarization of Mn4 Fe Ge3. By replacing one Mn atom in Mn5 Ge3 with Fe, the TC of Mn4 Fe Ge3 has been enhanced to 319.50 K, while still maintaining the same crystal structure, high electrical conductivity, and a high residual resistivity ratio of 5.33. More importantly, the spin polarization in excess of 60% of Mn4 Fe Ge3, much higher than that of Mn5 Ge3, has been realized.
AB - Intermetallic ferromagnetic compound Mn5 Ge3, with Curie temperature TC =296 K, a spin polarization of P=42%, and a good lattice match to semiconductors, is a potential spin injector for spintronics. We report the enhanced magnetic properties and spin polarization of Mn4 Fe Ge3. By replacing one Mn atom in Mn5 Ge3 with Fe, the TC of Mn4 Fe Ge3 has been enhanced to 319.50 K, while still maintaining the same crystal structure, high electrical conductivity, and a high residual resistivity ratio of 5.33. More importantly, the spin polarization in excess of 60% of Mn4 Fe Ge3, much higher than that of Mn5 Ge3, has been realized.
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U2 - 10.1063/1.2794425
DO - 10.1063/1.2794425
M3 - Article
AN - SCOPUS:34948815729
SN - 0003-6951
VL - 91
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 14
M1 - 142505
ER -