摘要:
The present invention provides a magnetic recording media incorporating Zn containing layers in close proximity to a magnetic layer to provide media having increased coercivity and lower noise. The Zn containing layer can be incorporated in a rotating, translating or stationary recording media to operate in conjunction with magnetic transducing heads for recording and reading of magnetic data, as well as other applications. The magnetic recording medium of the invention preferably includes a Co or Co alloy film magnetic layer, underlayer structures to promote epitaxial crystalline structure in the magnetic layer, and a Zn containing layer to promote isolation between the magnetic grains. The medium can further include seed layers, underlayers, intermediate layers, and overlayers. The process of manufacture includes promoting diffusion of Zn to the magnetic layer grain boundaries.
摘要:
The present invention provides a longitudinal magnetic recording media having a substrate, optionally, a sputter deposited MgO seed layer, a Co or Co alloy based magnetic layer and an underlayer disposed between the substrate and the magnetic layer comprised of a material having a body centered cubic derivative ordered crystalline structure, preferably a B2, DO3 or L21 structure. The material may be for example, NiAl, FeAl or Mn3Si. A thin Cr or Cr alloy intermediate layer of about 1.0 nm to 5.0 nm thick may be positioned between the underlayer and the magnetic layer.
摘要:
The present invention provides for magnetic and magneto-optic recording media, transducers and data storage devices constructed therefrom that have highly oriented films having long range order in the crystal structure of the film. The recording medium includes a magnetic recording layer comprised of Co-based material, such as Co or one or more Co alloys having a (10{overscore (1)}0) crystal texture, a substrate, a first underlayer having a fcc structure and a (110) crystal texture disposed between the substrate and the magnetic recording layer. A second underlayer having a bcc structure and a (112) crystal texture is also disposed between the magnetic recording layer and the first underlayer. In particular, if a (110) Si single crystal substrate is non-oxidized certain metals having fcc structures, such as Ag, Cu, Al, and Au and fcc derivative structures, such L10 and L12 structures, can be epitaxially grown on the Si surface. While the one unit cell to one unit cell lattice match between fcc Ag and A4 (diamond) Si is quite poor, multiples of the Ag unit cell distance fit very well on the Si surface. The long range order of the Si surface induces the epitaxial growth of the Ag fcc structure. Upon this fcc structure, a bcc structure, such as Cr, or a bcc derivative, such as B2, DO3 and/or L21 can be epitaxially grown.
摘要:
The present invention provides for a magnetic recording media incorporating Mn-containing layers between a substrate and a magnetic layer to provide media having increased coercivity and lower noise. The Mn-containing layer can be incorporated in a rotating, translating or stationary recording media to operate in conjunction with magnetic transducing heads for recording and reading of magnetic data, as well as other applications. The magnetic recording medium of the invention preferably includes a Co or Co alloy film magnetic layer, and Mn-containing layer, preferably comprised of VMn, TiMn, MnZn, CrMnMo, CrMnW, CrMnV, and CrMnTi, and most preferably a CrMn alloy, disposed between the substrate and the magnetic layer to promote an epitaxial crystalline structure in the magnetic layer. The medium can further include seed layers, preferably polycrystalline MgO for longitudinal media, underlayers, and intermediate layers. Underlayers and intermediate layers are comprised of materials having either an A2 structure or a B2-ordered crystalline structure disposed between the seed layer and the magnetic layer. Materials having an A2 structure are preferably Cr or Cr alloys, such as CrV, CrMo, CrW and CrTi. Materials having a B2-ordered structure having a lattice constant that is substantially comparable to that of Cr, such as those preferably selected from the group consisting of NiAl, AILCo, FeAl, FeTi, CoFe, CoTi, CoHf, CoZr, NiTi, CuBe, CuZn, A-LMn, AlRe, AgMg, and Al.sub.2 FeMn.sub.2, and is most preferably FeAl or NiAl.
摘要:
The present invention provides a longitudinal magnetic recording media having a substrate, a Co or Co alloy based magnetic layer arid an underlayer disposed between the substrate and the magnetic layer. The underlayer is made of a material having a Ga3Pt5 crystalline structure, most preferably Ni5Al3. Several intermediate layers, disposed between the underlayer and the magnetic layer may also be included.
摘要:
The present invention provides a longitudinal magnetic recording media having a substrate, a sputter deposited MgO seed layer, a Co or Co alloy based magnetic layer and an underlayer disposed between the seed layer and the magnetic layer comprised of Cr, a Cr alloy or a material having a B2 ordered crystalline structure, preferably NiAl or FeAl. A thin Cr or Cr alloy intermediate layer of about 1.0 nm to 5.0 nm thick may be positioned between the underlayer and the magnetic layer.
摘要:
The present invention provides a longitudinal magnetic recording media having a substrate, a Co or Co alloy based layer and an underlayer disposed between the substrate and the magnetic layer comprised of a material having a B2 ordered crystalline structure, preferably NiAl or FeAl. A thin Cr intermediate layer of about 1.0 nm to 5.0 nm thick may be positioned between the underlayer and the magnetic layer.
摘要:
A cabinet dehydrator for home preservation of food under relative humidity, pressure, and temperature restraints. Intake air is obtained from the surrounding atmosphere and displaced into the dehydrator over heating elements by a blower. This heated air is ported through a manifold defined by the cabinet walls having a sloping chamber which narrows toward the top of the cabinet to evenly displace the heated air over the tops of removable drying trays. The heated air withdraws moisture from the articles of food placed on the drying trays, and is partially exhausted through exhaust portals, depending upon the relative humidity, temperature, and pressure of the surrounding atmosphere. The remaining heated air is mixed with an amount of surrounding air entering through intake portals to replace the amount exhausted. This mixture of heated air and intake air is then heated and recirculated by the blower until the articles of food are dried.
摘要:
A method of writing binary data comprising (i) heating a magnetic microstructure from an initial temperature to an above-ambient temperature that is not less than a transition temperature for the magnetic microstructure, which causes a phase transition interlayer of the magnetic microstructure to transition from an antiferromagnetic phase to a ferromagnetic phase; and (ii) reversing an orientation of magnetization of a magnetic storage layer of the magnetic microstructure with a magnetic field while the phase transition interlayer is in the ferromagnetic phase.
摘要:
A method of writing binary data comprising (i) heating a magnetic microstructure from an initial temperature to an above-ambient temperature that is not less than a transition temperature for the magnetic microstructure, which causes a phase transition interlayer of the magnetic microstructure to transition from an antiferromagnetic phase to a ferromagnetic phase; and (ii) reversing an orientation of magnetization of a magnetic storage layer of the magnetic microstructure with a magnetic field while the phase transition interlayer is in the ferromagnetic phase.