Title :
The magnetic properties of Fe-Al-Nb intermetallic compounds
Author :
Imaizumi, Masayuki ; Las, B. ; Bejerano, J.M.Z. ; Gama, S. ; Coelho, A.A. ; Mota, M.A. ; Caram, R.
Author_Institution :
Departamento de Fisica, Univ. Estadual Paulista Julio de Mesquita Filho, Bauru, Brazil
Abstract :
Summary form only given. The Fe/sub 2/Nb intermetallic compound crystallizes in the MgZn/sub 2/ structure ( hexagonal Laves phases) and its magnetic properties was studied extensively. We have simulated the Fe-Al-Nb alloys by the Fe substitution for Al atoms in the (0,0,0) and (0,0,0.5) sites of the Fe/sub 2/Nb phase, and its magnetic behavior was studied using the linearized augmented plane waves (LAPW) method, code Wien (97). The spin magnetic moments are 1.53 /spl mu//sub B/ for the Fe atom in the site with 6 Fe neighbors, -0.012 /spl mu//sub B/ for the Al atom with 2 Al neighbors and -0.048 /spl mu//sub B/ for the Nb atom with 4 Nb neighbors. In the metal, the spin magnetic moment is 2.31 /spl mu//sub B/ for the iron atom. The authors show the magnetic behavior of the material by the change observed in the total density of states of spins up and spins down, and a magnetic moment measurement of this compound.
Keywords :
APW calculations; aluminium alloys; ferromagnetic materials; iron alloys; magnetic moments; magnetic structure; niobium alloys; Fe-Al-Nb; hexagonal Laves phases; linearized augmented plane waves method; magnetic properties; spin magnetic moments; Aluminum alloys; Atomic measurements; Crystallization; Density measurement; Intermetallic; Iron alloys; Magnetic materials; Magnetic moments; Magnetic properties; Niobium alloys;
Conference_Titel :
Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International
Conference_Location :
Amsterdam, The Netherlands
Print_ISBN :
0-7803-7365-0
DOI :
10.1109/INTMAG.2002.1000710
