Study of magnetic properties of Ni –Fe –P and Ni –Fe –P–B chemical films
-
Lingling Wang
,
Weiqing Huang
Abstract
The magnetic properties of as-plated and heat-treated Ni – Fe –P and Ni –Fe –P–B films were investigated as a basis for developing new functional thin films. The amorphous Ni –Fe –P and Ni –Fe –P–B and crystalline Ni –Fe –P–B films were prepared by simply controlling the NaH2PO2 concentration in the bath. The structure of all Ni –Fe –P films, prepared in an NaH2PO2 concentration range of 18– 48 g/l, was amorphous, while the NaH2PO2 concentration for the formation of amorphous Ni –Fe –P–B films ranged from 23 to 38 g/l. The increase of the Fe content is thought to be the reason for the increase in the atomic magnetic moment, and thus results in an increase in the saturation magnetization (Ms). The amorphous Ni –Fe –P films possess superior coercivity (Hc). Similar behavior can also be seen in the case of Ni –Fe –P–B films. The lower squarenesses of as-plated films, compared with those of annealed films, implies that the as-deposited films are inhomogenous. As the films were heated up to 400 °C, the homogeneity was obviously improved, and Ms decreased and Hc increased continuously for all the alloy films.
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© 2002 Carl Hanser Verlag, München
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- Notifications/Mitteilungen
- Personal/Personelles
Articles in the same Issue
- Frontmatter
- Articles/Aufsätze
- 59Fe Grain boundary diffusion in nanostructured γ-Fe–Ni
- 59Fe Grain boundary diffusion in nanostructured γ-Fe–Ni
- Thermodynamic assessment of the Cu–Ti system taking into account the new stable phase CuTi3
- Thermodynamic assessment of the Pd–Sc system
- Heat content of liquid Fe –Cu–Si alloys formed in the melting treatment process of domestic waste incineration residue
- A model of viscosity for liquid metals
- Umwandlungswärme einer NiTi-Gedächtnislegierung unter Last
- Study of magnetic properties of Ni –Fe –P and Ni –Fe –P–B chemical films
- Geometrical modelling of a crystal grain in a weld of ferritic stainless steel
- Welding of heat-resistant 20% Cr – 5% Al steels
- Finite element analysis of γ′ directional coarsening in Ni-based superalloys
- Quantitative analysis of aluminium alloys using SIMS
- Effect of the particle size on the mechanical properties of 60 vol.% SiCp reinforced Al matrix composites
- Notifications/Mitteilungen
- Personal/Personelles
