Magnetism and magnetotransport in sonochemically-prepared amorphous Co(100-x)Pt(x) nanoalloys.
Amorphous nanoalloys of Co(100-x)Pt(x) (0 < or = x < or = 50) prepared sonochemically exhibit a negative magnetotransport effect, showing a maximum for platinum volume fraction of 10%. The oscillatory peak maxima observed in x = 30 composition for residual resistivity, rho0 and Tmin corresponds to the peak minima for the negative MR% in the range of compositions studied. We observe that in weakly exchange coupled amorphous alloys, the local magnetic order at Tmin and the disorder effects observed from rho0 become crucial.
Rao
Manju Lata
ML
Materials Chemistry Laboratory, Department of Chemistry, Indian Institute of Technology, Kanpur, UP-208016, India.
Manoharan
S Sundar
SS
Elefant
D
D
Schneider
C M
CM
D000497:Alloys; D002244:Carbon / Q000737:chemistry*; D004560:Electricity; D007700:Kinetics; D008280:Magnetics; D046529:Microscopy, Electron, Transmission; D036103:Nanotechnology / Q000379:methods*; D009991:Oscillometry; D010984:Platinum / Q000737:chemistry*; D013016:Sound; D013696:Temperature; D013997:Time Factors; D014961:X-Ray Diffraction; D014965:X-Rays
D000497:Alloys; D010984:Platinum; D002244:Carbon