摘要:
High areal recording density, magnetic hard disk recording media including CSS landing zones with laser-textured surfaces having shallow bump heights of from about 40 to about 80 Å, bump spacing in the circumferential and radial directions of from about 10 to about 30 &mgr;m, and bump diameter of from about 4 to about 8 &mgr;m, are provided for use in disk drive systems utilizing padded head sliders operating at very low head slider flying heights of about 0.7&mgr; inch or below.
摘要:
High areal recording density, magnetic hard disk recording media including CSS landing zones with laser-textured surfaces having shallow bump heights of from about 40 to about 80 Å, bump spacing in the circumferential and radial directions of from about 10 to about 30 μm, and bump diameter of from about 4 to about 8 μm, are provided for use in disk drive systems utilizing padded head sliders operating at very low head slider flying heights of about 0.7 μinch or below.
摘要:
Disclosed is a method of increasing the efficiency of ultra-violet (UV) curing of a lubricant thin film utilized as a topcoat layer of a data/information storage medium, comprising irradiating the lubricant thin film with UV radiation of a wavelength corresponding to a wavelength of maximum absorption of UV radiation by the lubricant thin film. Also disclosed are data/information storage media, e.g., magnetic or MO disks, comprising the UV-cured lubricant thin films as topcoat layers.
摘要:
A system and method for corrosion problems in magnetic media resulting from moisture penetrating through the carbon layer into the magnetic layer by diffusion or other methods are overcome by processing the carbon overcoat to stop and/or inhibit the moisture penetration. The process involves removing moisture channels from protective overcoats of thin film magnetic media by irradiating the protective overcoat with ultraviolet (UV) radiation in an inert hydrophobic chemical environment. Afterwards, the thin film magnetic media can be removed into ambient atmosphere where it is coated with a lubricant.
摘要:
A high field contrast magnetic stamper/imprinter for use in patterning of magnetic and magneto-optical (MO) recording media by contact printing, comprises: (a) a layer of a magnetic material having a high saturation magnetization Bsat≧˜1.2 and high permeability μ≧˜5, including a first, topographically patterned surface and a second surface opposite the first surface, the first, topographically patterned surface comprising a patterned plurality of spaced-apart recesses with a plurality of non-recessed areas therebetween, the topographical pattern corresponding to a magnetic pattern to be formed in a magnetic or MO recording medium; and (b) a layer of Ni on the second surface. A corrosion-resistant protective overcoat layer may be present on the topographically patterned surface. A method for manufacturing the stamper/imprinter is also disclosed.
摘要:
A high field contrast magnetic stamper/imprinter for use in patterning of magnetic and magneto-optical (MO) recording media by contact printing, comprises: (a) a layer of a magnetic material having a high saturation magnetization Bsat≧˜1.2 and high permeability μ≧˜5, including a first, topographically patterned surface and a second surface opposite the first surface, the first, topographically patterned surface comprising a patterned plurality of spaced-apart recesses with a plurality of non-recessed areas therebetween, the topographical pattern corresponding to a magnetic pattern to be formed in a magnetic or MO recording medium; and (b) a layer of Ni on the second surface. A corrosion-resistant protective overcoat layer may be present on the topographically patterned surface. A method for manufacturing the stamper/imprinter is also disclosed.
摘要翻译:用于通过接触印刷图案化磁性和磁光(MO)记录介质的高场强对比磁压模/打印机包括:(a)具有高饱和磁化强度的磁性材料层, SUB >> =〜1.2,高磁导率μ> =〜5,包括第一,地形图形表面和与第一表面相对的第二表面,第一,地形图形表面包括图案化的多个间隔开的凹槽, 非凹陷区域,其形状图案对应于要在磁性或MO记录介质中形成的磁性图案; 和(b)第二表面上的Ni层。 耐腐蚀保护性外涂层可能存在于地形图形表面上。 还公开了一种用于制造压模/打印机的方法。
摘要:
A high field contrast magnetic stamper/imprinter for use in patterning of magnetic and magneto-optical (MO) recording media by contact printing, comprises: (a) a layer of a magnetic material having a high saturation magnetization Bsat≧˜1.2 and high permeability μ≧˜5, including a first, topographically patterned surface and a second surface opposite the first surface, the first, topographically patterned surface comprising a patterned plurality of spaced-apart recesses with a plurality of non-recessed areas therebetween, the topographical pattern corresponding to a magnetic pattern to be formed in a magnetic or MO recording medium; and (b) a layer of Ni on the second surface. A corrosion-resistant protective overcoat layer may be present on the topographically patterned surface. A method for manufacturing the stamper/imprinter is also disclosed.
摘要翻译:用于通过接触印刷图案化磁性和磁光(MO)记录介质的高场强对比磁压模/打印机包括:(a)具有高饱和磁化强度的磁性材料层, SUB >> =〜1.2,高磁导率μ> =〜5,包括第一,地形图形表面和与第一表面相对的第二表面,第一,地形图形表面包括图案化的多个间隔开的凹槽, 非凹陷区域,其形状图案对应于要在磁性或MO记录介质中形成的磁性图案; 和(b)第二表面上的Ni层。 耐腐蚀保护性外涂层可能存在于地形图形表面上。 还公开了一种用于制造压模/打印机的方法。
摘要:
The embodiments disclose a method of fabricating a stack, including replacing a metal layer of a stack imprint structure with an oxide layer, patterning the oxide layer stack using chemical etch processes to transfer the pattern image and cleaning etch residue from the stack imprint structure to substantially prevent contamination of the metal layers.
摘要:
A method and apparatus for using a dual-beam interferometer to test surface flatness is provided. The interferometer directs two beams focused at distinct points on a testing surface, such as the surface of a magnetic recording disc. An offset distance “d” between the two beams is provided on the target surface. In the present invention, the separation distance “d” is adjustable. The feature of adjustable separation distance in the interferometer allows the interferometer to meet the different spatial frequency requirements of various applications. In operation, first and second reflected beams are returned to an intensity beam splitter, where they are split and then recombined into two new beams of substantially equal intensity. The second of the two new light beams is constructed by the interference of half intensity of the first and half intensity of second beams, and is sent to a photodiode. The photodiode generates signals in response to the changing interference fringes caused as a result of the modulation of the optical path length difference between the original first and second beams. A local height difference on the reflective surface is calculated relative to the separation distance “d”.
摘要:
A method for patterning a carbon-containing substrate utilizing a patterned layer of a resist material as a mask and then safely removing the mask from the substrate without adversely affecting the substrate, comprising sequential steps of: (a) providing a substrate including a surface comprising carbon; (b) forming a thin metal layer on the substrate surface; (c) forming a layer of a resist material on the thin metal layer; (d) patterning the layer of resist material; (e) patterning the substrate utilizing the patterned layer of resist material as a pattern-defining mask; and (f) removing the mask utilizing the thin metal layer as a wet strippable layer or a plasma etch/ash stop layer.