Abstract
PREVIOUSLY we have reported1 that single crystal films of face-centred cubic β-cobalt (normally stable at temperatures in excess of 425° C) may be prepared at room temperature by electrodeposition on to copper single crystal substrates. These films may be grown in parallel orientation with the substrate to thicknesses of approximately 1µ using a bath consisting of 300 g/l. CoSO4.7H2O, 6 g/l. boric acid and 3 g/l. sodium chloride with the pH set at 2.3 and the current density ∼ 12 m.amp/cm2. The magnetic anisotropy contents of these films have now been determined using a torque magnetometer having a sensitivity of (2.56 ± 0.02) × 10−2 dyne cm/deg. rotation of the torsion head, the actual torque being measured by a null method. With the suspension system in position between the poles of the 4-in. Newport electromagnet, the maximum field H was ∼ 8 kœ applied in the plane of the film.
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GODDARD, J., WRIGHT, J. Magnetic Anisotropy in Single Crystal Films of β-Cobalt. Nature 202, 1322 (1964). https://doi.org/10.1038/2021322a0
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DOI: https://doi.org/10.1038/2021322a0
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