Magnetic and structural investigation of heat treated ion beam sputtered amorphous Co/sub 74/Fe/sub 6/B/sub 15/Si/sub 5/ films

Harris, Vincent G.; Oliver, S. A.; Nowak, W.; Vittoria, C.; Culbertson, Robert; Elam, W. T.; Kim, K.H.

doi:10.1109/20.104410

IEEE Trans. Magn.

1990

DOI: 10.1109/20.104410

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Magnetic and structural investigation of heat treated ion beam sputtered amorphous Co/sub 74/Fe/sub 6/B/sub 15/Si/sub 5/ films

Vincent G. Harris

S. A. Oliver

W. Nowak

et al.

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Cited by 4 publications

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“…[27][28][29] The development of magnets for high temperature and high power applications requires bulk soft magnetic materials that are capable of operating at higher temperatures and possessing large combined inductions and permeabilies. 30 Magnetic thin films are commonly deposited by physical vapor deposition ͑PVD͒ processes such as dc or radio frequency sputtering [31][32][33][34][35][36] and wet electrochemical methods. [37][38][39] Although the PVD methods are capable of producing smooth films, these methods do not offer high throughput.…”

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confidence: 99%

Electroless Deposition of Soft Magnetic CoNiP Thin Films

Murthy

Vemagiri

Gunasekaran

et al. 2004

J. Electrochem. Soc.

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The ternary CoNiP soft magnetic films were deposited on silicon substrates by the autocatalytic electroless process. The deposition of these magnetic thin films was carried out by using different concentrations of cobalt (Co 2ϩ ), nickel (Ni 2ϩ ) and hypophosphite (H 2 PO 2 Ϫ ) ions in the bath, and by maintaining the bath at different pH levels. The composition and the magnetic characteristics of the deposited films were studied. The effects of varying the concentration of both metal ions and nonmetal ion ͑reducing agent͒ on the magnetic properties of the films were explored by increasing the concentration of precursor salts of Co 2ϩ ions from 0.002 to 0.008 M, Ni 2ϩ ions from 0.004 to 0.02 M, and H 2 PO 2 Ϫ ions from 0.02 to 0.25 M. The pH of the bath was varied in the range 7.0-9.0 in steps of 0.5. The magnetic moment and coercivity of the CoNiP films decreased when the concentrations of the metal ion was increased. However, when the pH was increased, the magnetic moment increased with a corresponding reduction in the coercivity values. Maintaining the bath pH within a narrow range of 8.5 to 9.0 was found to be critical for the formation of high quality soft-magnetic films which exhibit large magnetic moments and low coercivity.

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mentioning

confidence: 99%

Electroless Deposition of Soft Magnetic CoNiP Thin Films

Murthy

Vemagiri

Gunasekaran

et al. 2004

J. Electrochem. Soc.

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“…The films are fabricated by sputtering (1)(2)(3)(4)(5)(6) as well as by electrodeposition and other wet methods (7)(8)(9)(10). The application of electrodeposited NiFe to thin film magnetic heads was developed in 1970 (11) and commercialized in 1979 (12,13).…”

mentioning

confidence: 99%

“…Soft magnetic thin films have been studied extensively for their potential use in sensor devices and magnetic recording systems. The films are fabricated by sputtering (1)(2)(3)(4)(5)(6) as well as by electrodeposition and other wet methods (7)(8)(9)(10). The application of electrodeposited NiFe to thin film magnetic heads was developed in 1970 (11) and commercialized in 1979 (12,13).…”

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confidence: 99%

Co‐Based Soft Magnetic Films Produced by Electroless Deposition

Osaka

Homma

Saito

et al. 1992

J. Electrochem. Soc.

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On the basis of our work on electroless CoB soft magnetic films with high saturation magnetization (Ms) and low coercivity (Hc) the effects of applying an external field during deposition and of adding Fe to the CoB binary system were investigated in order to improve the soft magnetic properties. When an external field (560 G) is applied, the Hc of deposited CoB films decreases from 1.20 Oe to 0.64 Oe. In the case of CoFeB ternary alloy films, FeSO4 is added to the CoB bath and its concentration is varied from 0.001 to 0.05 mol dm -~. The best soft magnetic properties, Hc = 0.72 Oe and Ms = 1180 emu cc -1, are obtained when the film is deposited from the bath containing 0.0025 mol dm -~ of FeSO4. The film had a small magnetostriction value (-4.4 • 10 -7) and higher permeability. The results of structural analysis suggest that the film consists of fine-particulated hexagonal close-packed crystallite with high crystallinity.

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Correlation of magnetic properties and local atomic structure observed by electron-yield EXAFS in amorphous Co74Fe6B15Si5 thin films

Harris

Oliver

Nowak

et al. 1991

Journal of Applied Physics

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Finite-size scaling relation of the Curie temperature in barium hexaferrite platelets J. Appl. Phys. 110, 123909 (2011) Enhanced refrigerant capacity and magnetic entropy flattening using a two-amorphous FeZrB(Cu) composite Appl. Phys. Lett. 99, 232501 (2011) Nonlinear motion of magnetic vortex under alternating-current magnetic field: Dynamic correction of a gyrovector and a damping tensor of the Thiele's equation Appl. Phys. Lett. 99, 142505 (2011) High domain wall magneto-resistance in amorphous TbFeCo wires Appl. Phys. Lett. 99, 122501 (2011) Accurate measurement of domain wall velocity in amorphous microwires, submicron wires, and nanowires Rev. Sci. Instrum. 82, 094701 (2011) Additional information on J. Appl. Phys.

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Magnetic and structural investigation of heat treated ion beam sputtered amorphous Co/sub 74/Fe/sub 6/B/sub 15/Si/sub 5/ films

Cited by 4 publications

References 10 publications

Electroless Deposition of Soft Magnetic CoNiP Thin Films

Electroless Deposition of Soft Magnetic CoNiP Thin Films

Co‐Based Soft Magnetic Films Produced by Electroless Deposition

Correlation of magnetic properties and local atomic structure observed by electron-yield EXAFS in amorphous Co74Fe6B15Si5 thin films

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