Title :
Magnetic properties of glassy Fe91-xZr7B2Nix (x=0, 5, 10, 15) alloys
Author :
Kim, K.S. ; Drioùch, L. ; Strom, V. ; Jonsson, B.J. ; Rao, K.V. ; Yu, S.C.
Author_Institution :
Dept. of Condensed Matter Phys., R. Inst. of Technol., Stockholm, Sweden
fDate :
9/1/1996 12:00:00 AM
Abstract :
We have studied the magnetization behaviour and the temperature dependence of AC-susceptibility at very low fields (5 mOe to 50 mOe) of glassy Fe91-xNr7B2Nix (x=0, 5, 10, 15) alloys. At zero Ni concentration our data suggests the existence of spin-glass behaviour at temperatures below 30 K. The addition of Ni drastically modifies the magnetic properties: the antiferromagnetic exchange coupling is reduced, the magnetic moment of Fe increases from 1.58 to 2.29 μs and Tc increases from 230 to 478 K. Thus, substitution of Fe by Ni favours the increase of magnetic order in this system
Keywords :
Curie temperature; amorphous magnetic materials; boron alloys; exchange interactions (electron); ferromagnetic materials; iron alloys; magnetic moments; magnetic susceptibility; magnetisation; metallic glasses; nickel alloys; spin glasses; zirconium alloys; 230 to 478 K; 5 to 300 K; AC-susceptibility; Curie transition; Fe76Zr7B2Ni15; Fe81Zr7B2Ni10; Fe86Zr7B2Ni5; Fe91Zr7B2; antiferromagnetic exchange coupling; glassy Fe91-xZr7B2Nix alloys; magnetic moment; magnetic order increase; magnetic properties; magnetization behaviour; nanocrystalline material; spin-glass behaviour; temperature dependence; very low fields; Anisotropic magnetoresistance; Antiferromagnetic materials; Iron alloys; Magnetic field measurement; Magnetic materials; Magnetic properties; Nickel alloys; Saturation magnetization; Temperature distribution; Zirconium;
Journal_Title :
Magnetics, IEEE Transactions on
