Abstract: Disclosed are a heterogeneous zeolite membrane and a method of preparing the same, and more particularly a heterogeneous zeolite membrane that has CHA and DDR zeolite structures by growing seed particles into a crystal structure different from that of the zeolite membrane and can thus separate CO2/N2 and CO2/CH4 even under wet conditions, a method of preparing the same, and a method of capturing and removing carbon dioxide using the membrane.

Abstract: In order to obtain a magnetic recording disk that exhibits high reliability even if the flying height of a magnetic head becomes very narrow, a lubricant is specified in terms of both molecular structure and quantitative data. That is, a lubricating layer 14 of the magnetic recording disk 1 is formed by a lubricant which contains perfluoropolyether compounds represented by the following chemical formula (Chemical Formula 1) and which has a first component content of 71.7%, a second component content of 15.7%, a third component content of 11.7%, a fourth component content of 0.3%, and a fifth component content of 0.

Abstract: A method of increasing the performance of a composite lubricant material when utilized as a thin film lubricant, comprising: (a) providing a substrate including a surface; (b) providing a composite lubricant comprising a mixture of at least one perfluoropolyether compound and at least one phosphite or phosphate compound; (c) applying a thin layer of the composite lubricant to the substrate surface; and (d) treating the thin layer of composite lubricant with UV radiation at a dosage and for an interval sufficient to reduce the surface tension, increase the corrosion resistance, increase the durability and reduce the stiction/friction of the thin layer of composite lubricant.

Abstract: Disclosed is a method of manufacturing magnetic disks, comprising a magnetic layer, a protective layer, and a lubricating layer on a substrate.

Abstract: The present invention provides a magnetic recording medium of high density with high durability and good electromagnetic transfer characteristics. The present invention provides a magnetic recording medium, which comprises a primer layer containing at least nonmagnetic powder on a support member and at least one layer of magnetic layer containing ferromagnetic powder dispersed in a binder, the magnetic layer being placed on the support member, wherein the primer layer comprises at least one type of compound expressed by the following general formula (1); General formula (1)  where R1, R2, R3, and R4 each represents an alkyl group having 2 to 7 carbon atoms.

Abstract: A method of in situ stabilizing a composite lubricant in order to reduce or subtantially eliminate phase separation of the components of the composite lubricant, comprising sequential steps of: (a) providing a substrate including a surface; (b) applying a thin layer or film of the composite lubricant to the substrate surface, the composite lubricant comprising at least two lubricant components which are normally mutually immiscible; and (c) treating the thin layer or film of composite lubricant solely with UV radiation for an interval sufficient to reduce or substantially eliminate phase separation of the at least two normally mutually immiscible lubricant components. Embodiments of the invention include magnetic and magneto-optical (MO) media including stabilized composite lubricant layers formed in situ according to the inventive process.

Abstract: A lubricant which does not splash easily and has an improved property of slidableness, and a magnetic disk using the lubricant are provided. A magnetic disk apparatus featuring a prolonged service life of a stable operation and an excellent record reproduction property is provided by installing the above magnetic disk. The lubricant of the invention contains perfluoropolyether expressed by the following general formula, in which a component of its molecular weights less than 1000 is smaller than 10 wt. %, a component of its molecular weights not less than 7000 is smaller than 15 wt. %, a ratio between a weight average molecular weight and a numeric average molecular weight is 1.

Abstract: In manufacturing a magnetic recording disk, a magnetic film for a recording layer is deposited on a substrate of the magnetic recording disk in a magnetic-film deposition chamber, and the substrate is transferred from the magnetic-film deposition chamber to a lubricant-layer preparation chamber without exposing the substrate to the atmosphere. Then, a lubricant layer is prepared on the substrate in the lubricant-layer preparation chamber.

Abstract: A lubricant which does not splash easily and has an improved property of slidableness, and a magnetic disk using the lubricant are provided. A magnetic disk apparatus featuring a prolonged service life of a stable operation and an excellent record reproduction property is provided by installing the above magnetic disk. The lubricant of the invention contains perfluoropolyether expressed by the following general formula, in which a component of its molecular weights less than 1000 is smaller than 10 wt. %, a component of its molecular weights not less than 7000 is smaller than 15 wt. %, a ratio between a weight average molecular weight and a numeric average molecular weight is 1.5 or less, and a substitution ratio of its terminal functional group is not less than 90%: R1—CF2O—[—(CF2CF2O )—m—(CF2O)—n—]—CF2—R2  (1), where R1 and R2 are univalent organic groups, m and n are positive integers.

Abstract: A method and apparatus for depositing a protective film on a data recording disk, including the steps of depositing a magnetic film layer as a data recording layer on a surface of a substrate while the substrate is at a magnetic film deposition temperature; heating the substrate with the magnetic film layer thereon to a protective film deposition temperature; and depositing a protective film on the magnetic film layer while the substrate is at the protective film deposition layer; wherein the protective film deposition temperature is higher than the magnetic film deposition temperature.

Abstract: A method for lubricating a thin film magnetic media is disclosed wherein the magnetic media is lubricated only at the head-disc interface zone. The method comprises the steps of vaporizing the lubricant, mixing the lubricant with a carrier gas stream, and depositing a film of the lubricant on at the loading zone on the surface of the magnetic media. The lubricant film can be selectively deposited on the surface of the magnetic disc at any location and at any thickness. In one embodiment of the invention, the lubricant film forms a radial band on the surface of the magnetic disc located near the outside diameter of the magnetic disc.

Abstract: The present invention provides an optical recording medium which is inhibited or prevented from sticking of lubricants onto a light emitting face of a solid immersion lens. The optical recording medium 10 of the present invention comprises a substrate 1 and, provided thereon in succession, a reflective layer 2, a recording layer 4, a protective layer 6 and a lubricating layer 7. The lubricating layer 7 is heated and/or irradiated with ultraviolet rays to adjust the lubricant bonding rate to at least 60%, thereby to reduce the amount of physical adsorptive lubricant contained in the lubricating layer 7. As a result, when recording and reproduction are carried out using a floating type optical head provided with a solid immersion lens, the lubricant hardly sticks to the light emitting face of the solid immersion lens. The lubricant bonding rate can be enhanced to 80% or more by rinsing the lubricating layer with a solvent after the heating and/or the irradiation with ultraviolet rays.

Abstract: Magneto-optical information storage media having improved tribological properties when used in high-density storage devices employing very small head flying heights are formed by providing by a protective overcoat/lubricant topcoat layer system on the media surface. Embodiments of the present invention include forming the protective overcoat layer of an amorphous, abrasion resistant, carbon-based, diamond-like material less than about 50 Å thick selected from CNx, CHx, and CNxHy, and forming the lubricant topcoat at a thickness of 15-25 Å, of a medium molecular weight linear chain perfluoro polyalkylene polymer having reactive end groups for bonding the polymer molecules to the protective overcoat layer.

Abstract: A magnetic recording medium comprising a nonmagnetic substrate, a liquid lubricant-containing coating layer having a porosity (U) formed on the substrate, and a magnetic layer having a porosity (M) formed directly on the coating layer. The ratio of porosity (U/M) between the coating and magnetic layers is between 0.75 and 1.25. The volume percentage of the lubricant contained in the pores of the coating layer based on the whole pore volume in the coating layer is from 35 to 85%. This improves the durability of the magnetic layer.

Abstract: A thin film piezoelectric device has an epitaxial metal thin film (4) on a silicon substrate (2) and a PZT thin film (5) on the metal thin film, the PZT thin film (5) having a Ti/(Ti+Zr) atomic ratio between 0.65 and 0.90. A film bulk acoustic resonator having an extremely broad band is realized.

Abstract: A magnetic recording disk having on its surface a texture structure of fine surface irregularities with reduced variations, which is suitable for high-density magnetic recording, and a method of manufacturing such a magnetic recording disk are provided. The magnetic recording disk has a substrate 11, 12 (16) coated on a surface thereof with a magnetic layer 13, a carbon layer 14, and a lubricating film 15. The substrate has on a surface thereof a texture structure of fine surface irregularities for reducing friction when the substrate is brought into contact with a head and controlling an amount of lift of the head. The fine surface irregularities have a height of 20 nm or less and are formed from a pattern shape or profile of a shield with a high-speed atomic beam emitted from a high-speed atomic beam source.

Abstract: An information storage system including a perfluoropolyether lubricant having hydroxyethyloxymethyl terminated endgroups on the surface of a rigid storage medium is provided. In the subject invention, the perfluoropolyether lubricant has the general repeat formula of: HOp(CH2—CH2O)CH2—Z—CH2(OCH2—CH2)pOH where Z is —CF2—(OC2F4)m—(CF2)n—OCF2—, p has an average value of 1.5, the ratio of m to n is approximately 1.0, and the mean molecular weight of the lubricant is in the range of approximately 2000 to 6000.