Magnetic and crystal structure and magnetocrystalline anisotropy of hexagonal Fe{sub 60}Ga{sub 40{minus}x}As{sub x} (x = 6, 23) and FeGa{sub 23}Sb{sub 17} compounds
- Univ. di Parma (Italy). Dipt. de Fisica
- Istituto MASPEC del CNR, Parma (Italy); and others
Powder neutron diffraction at 1.5K has been used to investigate the crystal and magnetic structure, whilst the Singular Point Detection (SPD) technique has been used to measure the temperature and composition dependence of the magnetic anisotropy of Fe{sub 60}Ga{sub 40{minus}x}As{sub x} (x = 6, 23) and FeGa{sub 23}Sb{sub 17}. The compounds Fe{sub 60}Ga{sub 17}As{sub 23} and FeGa{sub 23}Sb{sub 17} are isotypic with Ni{sub 2}In (P6{sub 3}/mmc) and Fe{sub 60}Ga{sub 34}As{sub 6} is a complex modification of this with a doubling of the lattice constant a of the parent Ni{sub 2}In subcell. The neutron data show that the magnetic structures are planar at 1.5K. Analysis of the SPD signals also indicates a planar anisotropy for all compositions at low temperatures. The temperature dependence of the anisotropy field H{sub A} is very similar for the Ga compounds whilst for the Sb compound a smoother dependence is observed at low temperatures. The anisotropy field increases irrespective of As or Sb substitution. The Curie point, saturation magnetization and anisotropy field can be simultaneously increased by changing the relative content of non-magnetic ions.
- OSTI ID:
- 40242
- Report Number(s):
- CONF-930860-; ISSN 0018-9464; TRN: IM9520%%437
- Journal Information:
- IEEE Transactions on Magnetics, Vol. 30, Issue 2Pt2; Conference: EMMA `93: 5th European magnetic materials and applications conference, Kosice (Slovakia), 24-27 Aug 1993; Other Information: PBD: Mar 1994
- Country of Publication:
- United States
- Language:
- English
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