Abstract: The present disclosure is generally related to a magnetic recording device comprising a magnetic recording head having a first current flow in a cross-track direction through a trailing shield. In one or more embodiments, a second current flows in a cross-track direction around the main pole. The magnetic recording device comprises a main pole disposed between a trailing shield, a leading shield, and side shields. A trailing gap is disposed between the side shields and the trailing shield. A high moment seed layer is disposed between the main pole and the trailing shield. A first insulation layer is disposed within the trailing shield and directs the first current through the trailing shield, guided to the proximity of the main pole. A second insulation layer, disposed below the trailing shield, directs the second current through the trailing shield, or alternatively through the side shields and around the main pole.

Abstract: Aspects of the present disclosure generally relate to a magnetic recording head assembly that includes an external alternating current (AC) source. A magnetic recording head of the magnetic recording head assembly includes a conductive structure between a main pole and a trailing shield. The conductive structure includes a conductive layer, and the conductive layer is nonmagnetic. The magnetic recording head assembly also includes an external AC source to supply AC current that flows through the conductive structure. In one aspect, the conductive structure is between a coil structure and the trailing shield, and the external AC source is coupled to the coil structure. The conductive structure and the external AC source facilitate consistently providing an enhanced AC writing field to facilitate effective and reliable writing, high ADC, high SNR, and reduced jitter.

Abstract: The present disclosure is generally related to a magnetic recording device comprising a magnetic recording head having a first current flow in a cross-track direction through a trailing shield. In one or more embodiments, a second current flows in a cross-track direction around the main pole. The magnetic recording device comprises a main pole disposed between a trailing shield, a leading shield, and side shields. A trailing gap is disposed between the side shields and the trailing shield. A high moment seed layer is disposed between the main pole and the trailing shield. A first insulation layer is disposed within the trailing shield and directs the first current through the trailing shield, guided to the proximity of the main pole. A second insulation layer, disposed below the trailing shield, directs the second current through the trailing shield, or alternatively through the side shields and around the main pole.

Abstract: The present disclosure is generally related to a magnetic recording device comprising a magnetic recording head having a first current flow in a cross-track direction through a trailing shield. In one or more embodiments, a second current flows in a cross-track direction around the main pole. The magnetic recording device comprises a main pole disposed between a trailing shield, a leading shield, and side shields. A trailing gap is disposed between the side shields and the trailing shield. A high moment seed layer is disposed between the main pole and the trailing shield. A first insulation layer is disposed within the trailing shield and directs the first current through the trailing shield, guided to the proximity of the main pole. A second insulation layer, disposed below the trailing shield, directs the second current through the trailing shield, or alternatively through the side shields and around the main pole.

Abstract: The present disclosure is generally related to a magnetic recording device comprising a magnetic recording head having a current flow in a cross-track direction around a main pole. The magnetic recording device comprises a main pole disposed between a trailing shield, a leading shield, and side shields. A trailing gap is disposed between the main pole and the trailing shield. A hot seed layer is disposed between the trailing gap and the trailing shield. A first insulation layer is disposed between the hot seed layer and the trailing shield, where the first insulation layer contacts the side shields. A second insulation layer is disposed between the main pole and leading shield, where the second insulation layer contacts the side shields. The first and second insulation layers direct the current through the side shields and across the main pole in a cross-track direction.

Abstract: Aspects of the present disclosure generally relate to a magnetic recording head assembly that includes an external alternating current (AC) source. A magnetic recording head of the magnetic recording head assembly includes a conductive structure between a main pole and a trailing shield. The conductive structure includes a conductive layer, and the conductive layer is nonmagnetic. The magnetic recording head assembly also includes an external AC source to supply AC current that flows through the conductive structure. In one aspect, the conductive structure is between a coil structure and the trailing shield, and the external AC source is coupled to the coil structure. The conductive structure and the external AC source facilitate consistently providing an enhanced AC writing field to facilitate effective and reliable writing, high ADC, high SNR, and reduced jitter.

Abstract: Aspects of the present disclosure generally relate to a magnetic recording head of a magnetic recording device that facilitates generating a downtrack magnetic bias field to enhance writing. During magnetic writing using the magnetic recording head, a bias current is directed in a cross-track direction on the trailing side of the main pole. Bias current flowing in the cross-track direction on a leading side of the main pole is reduced or eliminated. The bias current flowing in the cross-track direction on the trailing side of the main pole facilitates generating a magnetic field in a downtrack direction. The magnetic field in the downtrack direction is a bias field generated using the bias current. The magnetic bias field in the downtrack direction facilitates enhanced writing performance and increased areal density capability (ADC) for magnetic recording.

Abstract: A write head for a data storage device comprises a main pole, a trailing shield, and a write-field enhancement structure disposed in a write gap between the main pole and the trailing shield. The write-field enhancement structure comprises a non-magnetic spacer, a non-magnetic layer, and a magnetic DC-field-generation (DFG) layer. The DFG layer is sandwiched between the non-magnetic layer and the non-magnetic spacer. The write head also includes at least one magnetic notch adjacent to at least one of the main pole or the trailing shield. The non-magnetic spacer is adjacent to a magnetic notch. Some embodiments include multiple magnetic notches. Also disclosed are data storage devices comprising such write heads.

Abstract: A magnetic recording head is disclosed having a main pole, a shield hot seed layer positioned at a first side of the main pole, a first material positioned at both a second side and a third side of the main pole, the first material connected to the main pole, a second material positioned adjacent to the first material on the second side and the third side of the main pole, the second material comprised of a spin torque layer, a third material positioned adjacent to the second material on the second side and the third side of the main pole, a fourth material positioned adjacent to the third material on the second side and the third side of the main pole and a side shield connected on an exterior side of the fourth material.

Abstract: A write head for a data storage device comprises a main pole, a trailing shield, and a write-field enhancement structure disposed in a write gap between the main pole and the trailing shield. The write-field enhancement structure comprises a non-magnetic spacer, a non-magnetic layer, and a magnetic DC-field-generation (DFG) layer. The DFG layer is sandwiched between the non-magnetic layer and the non-magnetic spacer. The write head also includes at least one magnetic notch adjacent to at least one of the main pole or the trailing shield. The non-magnetic spacer is adjacent to a magnetic notch. Some embodiments include multiple magnetic notches. Also disclosed are data storage devices comprising such write heads.

Abstract: Disclosed herein are perpendicular magnetic recording writers for providing spin-torque-assisted write field enhancement, and hard disk drives comprising such magnetic write heads. A spin-torque-assisting element is disposed in the write gap and extends to the air-bearing surface (ABS). The spin-torque-assisting element comprises a non-magnetic layer in contact with a main pole, a DC-field generation (DFG) layer with a first side in contact with the non-magnetic layer, and a spacer layer in contact with a second side of the DFG layer. A magnetization of the DFG layer is configured to be aligned substantially parallel to a write gap magnetic field generated by the main pole during a write process, and the magnetization of the DFG layer is configured to flip its direction in response to application of a bias current exceeding a specified magnitude.

Abstract: A magnetic recording head is disclosed having a main pole, a shield hot seed layer positioned at a first side of the main pole, a first material positioned at both a second side and a third side of the main pole, the first material connected to the main pole, a second material positioned adjacent to the first material on the second side and the third side of the main pole, the second material comprised of a spin torque layer, a third material positioned adjacent to the second material on the second side and the third side of the main pole, a fourth material positioned adjacent to the third material on the second side and the third side of the main pole and a side shield connected on an exterior side of the fourth material.

Abstract: Disclosed herein are magnetic write heads for providing spin-torque-assisted write field enhancement, and hard disk drives comprising such magnetic write heads. Within the write gap, each magnetic write head comprises a main pole, a trailing shield, a spacer disposed between the main pole and the trailing shield, a non-magnetic layer disposed between the main pole and the trailing shield, and a magnetic DC-field-generation (DFG) layer adjacent to the spacer and disposed between the spacer and the non-magnetic layer. In some embodiments, the DFG layer is the only magnetic layer within the write gap that is not adjacent to the main pole or the trailing shield.

Abstract: A magnetic recording head is disclosed having a main pole, a shield hot seed layer positioned at a first side of the main pole, a first material positioned at both a second side and a third side of the main pole, the first material connected to the main pole, a second material positioned adjacent to the first material on the second side and the third side of the main pole, the second material comprised of a spin torque layer, a third material positioned adjacent to the second material on the second side and the third side of the main pole, a fourth material positioned adjacent to the third material on the second side and the third side of the main pole and a side shield connected on an exterior side of the fourth material.

Abstract: Disclosed herein are magnetic write heads and hard disk drives comprising such magnetic write heads. A magnetic head comprises a magnetic pole, a first shield separated from the magnetic pole at an air-bearing surface (ABS) of the magnetic head, a magnetic layer disposed between the magnetic pole and the first shield, wherein the magnetic layer comprises at least of iron, cobalt, or nickel, a first non-magnetic layer disposed between the magnetic pole and the magnetic layer, and a second non-magnetic layer disposed between the magnetic layer and the first shield, wherein the magnetic layer is the only magnetic layer at the ABS that is between the main pole and the first shield that is not adjacent to the main pole or the first shield.

Abstract: Disclosed herein are magnetic write heads and hard disk drives comprising such magnetic write heads. A magnetic head comprises a magnetic pole, a first shield separated from the magnetic pole at an air-bearing surface (ABS) of the magnetic head, a magnetic layer disposed between the magnetic pole and the first shield, wherein the magnetic layer comprises at least of iron, cobalt, or nickel, a first non-magnetic layer disposed between the magnetic pole and the magnetic layer, and a second non-magnetic layer disposed between the magnetic layer and the first shield, wherein the magnetic layer is the only magnetic layer at the ABS that is between the main pole and the first shield that is not adjacent to the main pole or the first shield.

Abstract: A magnetic recording head is disclosed having a main pole, a shield hot seed layer positioned at a first side of the main pole, a first material positioned at both a second side and a third side of the main pole, the first material connected to the main pole, a second material positioned adjacent to the first material on the second side and the third side of the main pole, the second material comprised of a spin torque layer, a third material positioned adjacent to the second material on the second side and the third side of the main pole, a fourth material positioned adjacent to the third material on the second side and the third side of the main pole and a side shield connected on an exterior side of the fourth material.

Abstract: Disclosed herein are magnetic write heads for providing spin-torque-assisted write field enhancement, and hard disk drives comprising such magnetic write heads. Within the write gap, each magnetic write head comprises a main pole, a trailing shield, a spacer disposed between the main pole and the trailing shield, a non-magnetic layer disposed between the main pole and the trailing shield, and a magnetic DC-field-generation (DFG) layer adjacent to the spacer and disposed between the spacer and the non-magnetic layer. In some embodiments, the DFG layer is the only magnetic layer within the write gap that is not adjacent to the main pole or the trailing shield.

Abstract: A magnetoresistive (MR) sensor or read head for a magnetic recording disk drive has multiple independent current-perpendicular-to-the-plane (CPP) MR sensing elements. The sensing elements are spaced-apart in the cross-track direction and separated by an insulating separation region so as to be capable of reading data from multiple data tracks on the disk. The sensing elements have independent CPP sense currents, each of which is directed to independent data detection electronics, respectively. Each sensing element comprises a stack of layers formed on a common electrically conducting base layer, which may be a bottom magnetic shield layer formed of electrically conducting magnetically permeable material. Each sensing element has a top electrical lead layer. A top magnetic shield layer is located above the sensing elements in contact with the top lead layers.

Abstract: A hard-disk drive (HDD) with a current adjustment component is provided. The current adjustment component changes an amount of current to a magnetic-recording head of the HDD to cause a change in the strength of a magnetic write field produced by the magnetic-recording head in response to a determination that a present position of the magnetic-head head is not in a desired position. To illustrate, in response to a determination that the present position of the magnetic-recording head is further away from an edge of a current track being written than a desired position of the magnetic-recording head, the current adjustment component increases the current to the magnetic-recording head to cause an increase in the strength of the magnetic write field. The change in the strength of the magnetic write field causes data, written by the magnetic-recording head, to be located at a desired location on the magnetic-recording disk.