Seagate Technology Incorporated

Javier Ignacio Guzman

Michael J Conover

Jianhua Xue

Kirill A Rivkin

Joseph Mundenar

Kurt Wiesen

Bruce Douglas Buch

Wei Tian

Mourad Benakli

Todd Michael Lammers

I-Fei Tsu

Andrew Thomas Jaeb

Dimitar Velikov Dimitrov

Wenzhong Zhu

Declan Macken

Mark Thomas Kief

Ralph William Cross

Lei Lu

Pin-Wei Huang

Zuxuan Lin

Jian Zhong

Yanzhang Liu

Joseph J Schobel

Wei-Heng Hsu

Ali Ghoreyshi

Yichun Fan

Magnetic recording media with a thermal spin injection layer that induces a spin injection in a magnetic recording layer in response to a thermal gradient in the thermal spin injection layer. The thermal spin injection layer may comprise an antiferromagnetic, a ferromagnetic, or a ferrimagnetic material that demonstrates a Spin Seebeck effect. In turn, when heating the magnetic recording media (e.g., with a near field transducer of a HAMR drive), the thermal gradient may be established in the thermal spin injection layer. A resulting spin torque field may assist in switching a magnetic domain in the magnetic recording layer by providing an assistive field to at least initiate switching of the magnetic domain. In turn, more reliable or efficient operation of a storage drive comprising the magnetic recording media may be realized.

Spin torque assisted magnetic recording media

A machine learning system and method. The machine learning system includes at least one computation circuit that performs a weighted summation of incoming signals and provides a resulting signal. The weighted summation is carried out at least in part by a magnetic element in which weights are adjusted based on changes in effective magnetic susceptibility of the magnetic element.

Machine learning system utilizing magnetization susceptibility adjustments

A system includes a computing device with circuitry and memory with instructions for execution by the circuitry. The instructions include monitoring signals indicative of a non-uniform distance between a transfer head and a receiving substrate, and, in response to the monitored signals, actuating one or more actuators towards the transfer head or the receiving substrate to deform the transfer head or the receiving substrate.

Micro-component transfer systems, methods, and devices

A method for transferring components from a transfer head to a receiving substrate is disclosed. The method includes monitoring signals indicative of a pitch mismatch between locations on the transfer head and locations on the receiving substrate and actuating at least one actuator based at least in part on the monitored signals to reduce the mismatch of the pitch of the locations on the transfer head and the locations on the receiving substrate.

Micro-component batch transfer systems, methods, and devices

An apparatus comprises a microwave-assisted magnetic recording slider body. The body includes a write pole, a trailing shield, a spin torque oscillator, and an amplifying structure. The write pole extends from the air bearing surface into the slider body for a first distance, and the trailing shield extends from the air bearing surface into the slider body for a second distance. The spin torque oscillator is disposed proximate and between the write pole and the trailing shield at the air bearing surface and extends into the slider body for a third distance that is less than the first and second distances. The amplifying structure comprises a stepped portion and a gap, is recessed from the air bearing surface and disposed proximate the spin torque oscillator. The gap has a first interface with the write pole and a second interface with the trailing shield, wherein at least one of the first and second interfaces forms the stepped portion.

Amplifying structure for microwave-assisted magnetic recording

A recording head includes a bearing surface, a first writer and a first shield structure for the first writer. The recording head also includes a second writer and a second shield structure for the second writer. The recording head further includes a magnetic bridge connecting the first shield structure to the second shield structure at the bearing surface.

Dual writer with bridged connection

A method of forming a recording head for use with a data storage medium in a data storage device. The method includes forming first and second writers of different target geometries. A first recording measurement is performed on one or more storage media using the first writer. A second recording measurement is performed on the one or more storage media using the second writer. Based on a comparison of the first and second recording measurements to a predetermined quantity, either the first writer or the second writer is selected to be operational in the data storage device.

Selectable magnetic writers of different target geometries for reducing performance variance

A pattern is pre-written using a pre-erase or pre-conditioning magnetic field applied within at least part of a target track of a hard disk via a first write transducer prior to the target track being written. Subsequent to the pre-writing, target user data is written to the part of the target track.

Applying a pre-erase or pre-condition field to a hard disk before writing data to the hard disk

Multi-writer head with a single operational writer

A storage device includes a storage medium and a transducer head with two writers positioned to write to a same surface of the storage medium. The two writers are separated from one another along a down-track direction of a data track on the storage medium and independently controllable to write data.

Dual writer head design utilizing two writers of different sizes for writing interlaced data tracks

In certain embodiments, an apparatus may comprise a first output driver connected to a first output via a first trace and a second output driver connected to a second output via a second trace. The first output driver may be configured to output a first drive signal to the first output to drive the first output and the first drive signal may cause first induced noise in the second trace. Further, the second output driver may be configured to output a second drive signal based on the first drive signal where the second drive signal may reduce the magnitude of the first induced noise at the second output.

Noise cancellation in multitransducer recording

A later spin valve multi-reader includes at least two spin detectors, a spin injector and a spin diffusion medium. The spin diffusion medium bridges the spin detectors and the spin injector. Each of the spin detectors detects a unique spin accumulation signal.

Growing community of inventors

Minneapolis, MN, United States of America

Javier Ignacio Guzman