Magnetic properties of sputter deposited GdCoCu amorphous bubble films
Amorphous films of the ternary alloys GdCoCu are attractive candidates for bubble device applications. We report the results of measurements on rf sputter deposited films of GdCoCu. The magnetic properties of the films were studied by polar Kerr rotation, stripe width, and vibrating sample magnetometer measurements. The more promising compositions (nominally Gd/sub 14/Co/sub 63/Cu/sub 23/) support 1.3 ..mu..m stripe domains, and generally had moderately high quality factors of Q = 7.9 with 4..pi..M = 930 Gauss and a characteristic length l = 0.13 ..mu..m. The stripe collapse field of these films was 750 Oe. At room temperature, the polar Kerr rotation hysteresis loop shows a minimum ''residual'' coercivity of H/sub c/ approximately 2 Oe, which may be process limited. The data indicates that the copper additive does not dilute the transition metal sublattice magnetization as rapidly as does molybdenum.
- Research Organization:
- IBM Research Lab., San Jose, CA
- OSTI ID:
- 7270969
- Journal Information:
- AIP (Am. Inst. Phys.) Conf. Proc.; (United States), Vol. 29; Conference: 21. annual conference on magnetism and magnetic materials, Philadelphia, PA, USA, 9 Dec 1975; Other Information: See CONF-751209--
- Country of Publication:
- United States
- Language:
- English
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