4results about "Shielding heads" patented technology

To provide a magnetic recording device capable of improving recording density.SOLUTION: A magnetic recording device 210 includes a magnetic head 110 and a control unit 75. The magnetic head includes a first magnetic pole 31, a second magnetic pole 32, a magnetic element 20 provided between the first magnetic pole and the second magnetic pole, a first terminal T1 electrically connected to the first magnetic pole, a second terminal T2 electrically connected to the second magnetic pole, and a coil 30c. The control unit is electrically connected to the first terminal, the second terminal, and the coil. One end of the magnetic element is electrically connected to the first magnetic pole. The other end of the magnetic element is electrically connected to the second magnetic pole. The control unit can perform a recording operation. In the recording operation, the control unit supplies a recording current to the coil while applying an element voltage of a first voltage or more and a second voltage or less between the first terminal and the second terminal.SELECTED DRAWING: Figure 1

The present disclosure generally relate to a magnetic recording device comprising a write head and a resistor network coupled to the write head. The resistor network comprises a first path comprising a primary coil of the write head and a second path in parallel with the first current path, the second path comprising an assistive write element of the write head. A preamplifier coupled to the resistor network is configured to apply current to the first and second paths, where the current diverts into the first and second paths individually. The resistor network is coupled to the preamplifier by a single lead. The first path is configured to apply current to a primary coil of the write head. The second path is configured to apply current from a leading shield, via the assistive write element, to a trailing shield at a media facing surface.

To provide a magnetic recorder capable of improving the recording density.SOLUTION: According to an embodiment, a magnetic recorder includes a magnetic head and a control unit. The magnetic head includes: a first magnetic pole; a second magnetic pole; a magnetic element which is provided between the first magnetic pole and the second magnetic pole; and a coil. The control unit is electrically connected to the magnetic element and the coil. The control unit enables recording operation. The control unit supplies a recording current to the coil while applying an element voltage to the magnetic element in the recording operation. An alternating magnetic field is generated from the magnetic element to which the element voltage has been applied. Differential resistance of electric resistance of the magnetic element when the voltage applied to the magnetic element while the recording current is supplied to the coil is changed turns into a first differential resistance peak when the applied voltage is a first voltage. The differential resistance turns into a second differential resistance peak when the applied voltage is a second voltage. The second voltage is higher than the first voltage. The element voltage is higher than the first voltage and less than the second voltage.SELECTED DRAWING: Figure 1