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  • 1
    Digitale Medien
    Digitale Medien
    Structure and magnetic properties of FeRuGaSi multilayer thin films : 35th annual conference on magnetism and magnetic materials (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 5628-5630 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: The structure and magnetic properties of FeRuGaSi thin films used in very-high-frequency (150 MHz) recording head has been studied. The best soft magnetic properties, viz., coercivity of 0.2–0.3 Oe, permeability of 2000 at 1 MHz and 400–500 at 150 MHz, and magnetostriction of less than 10−6, were obtained after annealing at 450–500 °C. This magnetic behavior was attributed to the phase transformations and the increase in the grain size of the films occurring during the annealing process. Transmission electron diffraction revealed that B2 and/or DO3 ordered phases were formed in the films depending on the annealing temperature. However, good soft magnetic properties were associated with the formation of the B2 phase with low crystal anisotropy and saturation magnetostriction. These results are somewhat in contrast to what has been observed in Sendust, where magnetic softness is usually attributed to the formation of the DO3 phase.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.347918
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  • 2
    Digitale Medien
    Digitale Medien
    Sensitivity enhancement of Co/Pt superlattices through underlayer composition modification : The 40th annual conference on magnetism and magnetic materials (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 5704-5706 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Co/Pt superlattice films for magneto-optical recording have a relatively high Curie temperature compared to rare earth-transition metal films, which has led to criticism of their recording sensitivity at higher disk velocities. We have prepared high-performance Co/Pt disk recording media using (In2O3)100–x(SnO2)x (ITO) as the underlayer. We have observed a two-fold increase in recording sensitivity as x is increased from 0 to 75 mol % SnO2. We have correlated measured sensitivity behavior with composition-induced changes in the microstructure and electrical resistivity in the ITO underlayer. ITO deposited with low SnO2 content exhibits crystalline microstructure and low electrical resistivity, whereas ITO deposited with high SnO2 content exhibits amorphous microstructure and high electrical resistivity. The reduction in crystallinity with increasing SnO2 content is expected to decrease the ITO thermal conductivity, which can explain the increase in recording sensitivity. Small changes in Co/Pt coercivity as a function of x can easily be compensated by adjusting the ITO sputtering pressure. The optimum combination of Co/Pt sensitivity and coercivity can be readily achieved by controlling the ITO underlayer composition and sputtering pressure. © 1996 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.362224
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  • 3
    Digitale Medien
    Digitale Medien
    High-performance Co/Pt multilayer magneto-optical disk using ultrathin seed layers : The 41st annual conference on magnetism and magnetic materials (1997)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 81 (1997), S. 3839-3841 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: We have prepared high-performance disks based on Co/Pt multilayers using ultrathin seed layers. Both crystalline (such as ZnO) and amorphous [such as indium-tin-oxide (ITO) and Si] materials were used as seed layers. We found that very thin layers of these materials enhance coercivity, squareness of the Kerr loop, and perpendicular anisotropy of the Co/Pt superlattices. These beneficial effects are obtained with a seed layer as thin as 0.2 nm. This is incontrast with the earlier presumptions that indicated much thicker layers, about 80 nm of crystalline material, were required to improve the texture of the Co/Pt multilayer for sufficient enhancement in the coercivity. Further, the data indicated that disks with amorphous seed layers generally have higher perpendicular anisotropy and lower recording noise as compared to those with crystalline ZnO. We have prepared disks using a thin amorphous ITO seed layer and a simple disk structure: grooved PC/ITO/12[Co/Pt]/lacquer overcoat. The performance of these disks is similar to that a commercial TbFeCo media. This media has potential for low cost manufacturing. © 1997 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.364725
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  • 4
    Digitale Medien
    Digitale Medien
    Clusters and surfaces (1979)
    s.l. : American Chemical Society
    Chemical reviews 79 (1979), S. 91-137 
    Details
    ISSN: 1520-6890
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/cr60318a001
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  • 5
    Digitale Medien
    Digitale Medien
    Angular variation of the coercivity in magnetic recording thin films (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 3988-3990 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Coercivity of vacuum-deposited magnetic thin films of CoCr and CoNi is dependent on deposition geometries and other deposition conditions. The angular variation of coercivity shows three types of behavior: bell-, M-, and shifted M-type curves. The displacement-controlled nucleation and growth of reverse domains dominates the coercivity mechanism. The shifted M-type angular-dependent coercivity in the oblique-deposited thin film is related to the out-of-plane magnetic anisotropy, and the shift angle is correlated to the angle of the easy axis, which is out of the film plane but not coincident with the axis of the canted columnar structure.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.334885
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  • 6
    Digitale Medien
    Digitale Medien
    New high performance magneto-optic media: Tb/Bi/FeCo and Tb/Pb/FeCo superlattices (invited) : The 41st annual conference on magnetism and magnetic materials (1997)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 81 (1997), S. 3833-3837 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Tb/Bi/FeCo and Tb/Pb/FeCo superlattices are demonstrated to offer Kerr rotation and figure of merit (reflectivity times Kerr rotation) substantially exceeding that offered by conventional TbFeCo recording materials, particularly at blue wavelengths. Superlattices such as 4.4 Å Tb/2.0 Å Bi/5.0 Å Fe0.6Co0.4 exhibit squarenesses suitable for magneto-optical recording and figure of merits of 0.20, 0.18, and 0.14 at wavelengths of 780, 650, and 430 nm, respectively. Dynamic testing with 780 and 490 nm light demonstrates that the high figures of merit translate to carriers several dB above those produced by TbFeCo alloys. Furthermore, very high carrier-to-noise ratios such as 54 dB at a mark length of 0.75 μm (4 MHz) and 60 dB at long mark lengths (1 MHz) are obtained using 490 nm light and a bandwidth of 30 kHz. © 1997 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.364898
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  • 7
    Digitale Medien
    Digitale Medien
    Electron spectroscopy: Theory, techniques and applications, vol. 4. C. R. Brundle and A. D. Baker (Editors). Academic Press London, 1982 (1982)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 4 (1982), S. i 
    Details
    ISSN: 0142-2421
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Physik
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/sia.740040611
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