High saturation magnetization films of FeCoCr

Thin (∼1000 Å) films of (Fe54Co46)1−xCrx have been prepared by magnetron sputtering on Si/SiO2 substrates. The films were shown to be body-centered-cubic and (110) textured. It was found that the Fe54Co46 films possess a saturation magnetization of 24.5 kG at room temperature. Doping the Fe54Co46 fi...

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Veröffentlicht in:Journal of applied physics 2002-05, Vol.91 (10), p.6818-6820
Hauptverfasser: Vas’ko, V. A., Inturi, V. R., Riemer, S. C., Morrone, A., Schouweiler, D., Knox, R. D., Kief, M. T.
Format: Artikel
Sprache:eng
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Zusammenfassung:Thin (∼1000 Å) films of (Fe54Co46)1−xCrx have been prepared by magnetron sputtering on Si/SiO2 substrates. The films were shown to be body-centered-cubic and (110) textured. It was found that the Fe54Co46 films possess a saturation magnetization of 24.5 kG at room temperature. Doping the Fe54Co46 films with Cr in the range of 0–13 at. % increased corrosion resistance, electrical resistivity, and reduced the saturation magnetization as a function of the amount of added Cr. The coercivity of both doped and undoped as-deposited films (80–120 Oe) decreased substantially after a 220 °C magnetic anneal. Electrochemical corrosion testing was done in two chloride salt solutions. Potentiodynamic scans performed on films in a 0.47 M chloride bath solution at pH=2.9 showed a substantial increase in corrosion resistance of the films between 6.6 and 8.2 a/o Cr. Similar scans performed in a 0.01 M chloride solution at pH=5.8 showed good corrosion resistance for all the films.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.1452657