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  • 1
    Electronic Resource
    Electronic Resource
    Laser recording in tellurium suboxide thin films (1986)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 59 (1986), S. 716-719 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Tellurium suboxide (TeOx) films prepared by coevaporation consist of tiny grains of tellurium embedded in a TeO2 matrix. The size of the tellurium grains depends on the preparation conditions. Except for samples with exceedingly small grains, crystalline diffraction patterns can be observed by using selected-area electron diffraction even though these samples show amorphous x-ray diffraction patterns. Heat treatment causes a transition in optical properties and the appearance of peaks for crystalline tellurium in x-ray diffraction. Thermal writing with a focused diode laser on both heat-treated and as-deposited samples gave recorded marks with high sensitivity and good contrast, although an incubation period of many seconds is required for the full development of the marks. The observed laser recording behavior cannot be explained by a simple amorphous-to-crystalline transition, and a new writing mechanism is proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.336588
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    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
    Source: AIP Digital Archive
    Topics: Physics
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.364725
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    Paper (German National Licenses)
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