摘要:
In a coated high-temperature superconducting wire 1 in which a superconducting yttrium-based wire (high-temperature superconducting wire) 2 having a rectangular cross section is coated by an insulating layer 6, the insulating layer 6 is an electrodeposited film made of block copolymerized polyimide which contains siloxane bonds in a polyimide main chain and which has molecules with anionic groups. A coil formed from the superconducting yttrium-based wire 2 is impregnated with epoxy resin, and the epoxy resin is cured. The coil is configured such that the epoxy resin is completely separated from the superconducting yttrium-based wire 2 by the insulating layer 6.
摘要:
Embodiments of the present invention provide a magnetic head for perpendicular magnetic recording, and a magnetic disk apparatus capable of preventing data erasure caused by alignment marks. In an embodiment, the magnetic head includes a head element including at least a main pole having a pole face on a flying surface and an auxiliary pole; alignment marks made of a magnetic material and used to detect the amount of lapping work when lapping the pole face of the main pole; and members made of a magnetic material, continuously extending in either direction with respect to the position of the main pole from within the alignment marks outward at least beyond the alignment marks.
摘要:
A hard-disk drive. The hard-disk drive includes a magnetic-recording disk including tracks on which a plurality of patterned bit-cells that are isolated magnetically are aligned at predetermined alignment pitches. The hard-disk drive includes a magnetic-recording head which is configured to follow tracks, and to write and to read data. The hard-disk drive includes a signal-processing unit which is configured to generate a recording signal based on a write-clock signal with cycles corresponding to alignment pitches of patterned bit-cells, and to output a recording signal. The hard-disk drive includes a phase-detecting unit which is configured to detect a phase of the write-clock signal when the magnetic-recording head reaches an end point of a predetermined range. The hard disk drive includes a determination-processing unit which is configured to determine success of data writing based on a difference between an expected value and a detected value of the phase of the write-clock signal.
摘要:
A negative electrode for a rechargeable lithium battery includes a current collector and a negative active mass disposed on the current collector. The negative active mass includes a negative active material including a lithium vanadium composite oxide and a crystalline structure aid for inhibiting deterioration of a crystalline structure. The negative active material can inhibit an irreversible crystalline structure change during charge and discharge, and does not incur decomposition of an electrolyte resulting in improvement of a cycle-life of a rechargeable lithium battery.
摘要:
One element is taken from a machined shape. When the element is a straight line element, whether or not the distance D between the start point and the end point of the element in a direction orthogonal to the axis of rotation of the workpiece is equal to or greater than a preset value Ds is determined. In addition, whether or not an angle A that the straight line element makes with the Z-axis is equal to or greater than a preset angle Aa is determined. When the distance D is equal to or greater than the preset value Ds and the angle A is equal to or greater than the preset angle Aa, a program is created with the cutting direction reversed from the profile direction.
摘要:
Embodiments of the invention prevent a decrease in magnetization or demagnetization from occurring to recording magnetization regardless of a direction in which a stray field is applied. In one embodiment, an apparatus for data storage system comprises a head having a magnetic field shield in the vicinity of a main pole, and a cover of the device, using a constituent material with a magnetic field shielding effect, across the cover, or at part thereof. When a stray field in a direction perpendicular to a recording medium is applied, the effect of the magnetic field is alleviated by the magnetic field shield installed in the vicinity of the main pole. In such a case, it need only be sufficient to form the magnetic field shield in a shape optimum for removing the stray field in the perpendicular direction only. When a stray field in a direction horizontal in relation to the recording medium is applied, the magnetic field acting on the recording medium is removed by the cover of the device comprising a magnetic component.
摘要:
The method of preparing a negative active material for a non-aqueous electrolyte rechargeable battery includes mixing a vanadium compound and a lithium compound and then subjecting the mixture to first firing to obtain Li1.0(VxMy)1.0O2 having a layered halite type structure (where 0.5≦x≦1.0, 0≦y≦0.5, x+y=1, and M is selected from the group consisting of group 2 to 15 elements of the periodic table and combinations thereof); and adding a lithium compound to the Li1.0(VxMy)1.0O2 and then subjecting the resultant to second firing. The negative active material for a non-aqueous electrolyte rechargeable battery prepared according to the preparing method has high crystallinity, excellent charge and discharge characteristics at a high rate, and excellent charge and discharge cycle characteristics.
摘要翻译:制备非水电解质可再充电电池用负极活性物质的方法包括混合钒化合物和锂化合物,然后对混合物进行首次烧成,得到具有层状卤化物型结构的Li1.0(VxMy)1.0O2( 其中0.5 <= x <= 1.0,0 <= y <= 0.5,x + y = 1,M选自元素周期表第2至15族元素及其组合); 并向Li1.0(VxMy)1.0O2中加入锂化合物,然后对所得物进行第二次烧制。 根据制备方法制备的非水电解质可再充电电池的负极活性材料具有高结晶度,高速率优异的充放电特性,以及良好的充放电循环特性。
摘要:
A negative electrode for a rechargeable lithium battery includes a current collector and a negative active mass disposed on the current collector. The negative active mass includes a negative active material including a lithium vanadium composite oxide and a crystalline structure aid for inhibiting deterioration of a crystalline structure. The negative active material can inhibit an irreversible crystalline structure change during charge and discharge, and does not incur decomposition of an electrolyte resulting in improvement of a cycle-life of a rechargeable lithium battery.
摘要:
Embodiments of the present invention provide a method of producing a magnetic disk device in which a plurality of heads can appropriately record servo data on a magnetic disk. The method of producing the magnetic disk device according to one embodiment includes the steps of: attaching a magnetic disk, a plurality of heads and head amplifier circuit to the magnetic disk device; and recording the servo data input through the head amplifier circuit with the plurality of heads on the magnetic disk all at once; wherein the head amplifier circuit includes a plurality of amplifiers provided corresponding to the plurality of heads respectively and a plurality of registers which is provided corresponding to the plurality of amplifiers respectively and holds set values determining the amplification of the amplifiers, and the step of recording the servo data is conducted with the plurality of registers included in the head amplifier circuit individually set.
摘要:
The present invention relates to cobalt oxide particles useful as a precursor of a cathode active material for a non-aqueous electrolyte secondary cell which is capable of showing a stable crystal structure by insertion reaction therein, and producing a non-aqueous electrolyte secondary cell having a high safety and especially a high heat stability, a process for producing the cobalt oxide particles, a cathode active material for a non-aqueous electrolyte secondary cell using the cobalt oxide particles, a process for producing the cathode active material, and a non-aqueous electrolyte secondary cell using the cathode active material.