Seagate Technology Incorporated

Yifan Zhang

Mark Thomas Kief

Venkateswara R Inturi

Michael C Kautzky

Vladyslav Alexandrovich Vas'ko

Zhihong Lu

Declan Macken

Yonghua Chen

Mark Ostrowski

Konstantin Nikolaev

Ladislav Rudolf Pust

Zhongyan Wang

Richard P Larson

Xilin Peng

Lijuan Zou

Dion Song

Stacey Christine Wakeham

Charles Everett Hawkinson

Juren Ding

A magneto-resistive reader includes a first magnetic shield element, a second magnetic shield element and a magneto-resistive sensor stack separating the first magnetic shield element from the second magnetic shield element. The first shield element includes two ferromagnetic anisotropic layers separated by a grain growth suppression layer.

Magnetic sensor with composite magnetic shield

A magnetic writer has at least a write pole with a first partial side shield and a second partial side shield. The write pole has a leading edge and a trailing edge along an air bearing surface (ABS) and a first side and a second side along an axis orthogonal to the ABS. The first partial side shield is separated from the first side of the write pole and extends from adjacent the write pole from the trailing edge to a location intermediate that trailing edge and the leading edge.

Write pole trailing edge partial side shield

A method of fabricating a magnetic device is described. A mask removing layer is formed on a layered sensing stack and a hard mask layer is formed on the mask removing layer. A first reactive ion etch is performed with a non-oxygen-based chemistry to define the hard mask layer using an imaged layer formed on the hard mask layer as a mask. A second reactive ion etch is performed with an oxygen-based chemistry to define the mask removing stop layer using the defined hard mask layer as a mask. A third reactive ion etch is performed to define the layered sensing stack using the hard mask layer as a mask. The third reactive ion etch includes an etching chemistry that performs at a lower etching rate on the hard mask layer than on the layered sensing stack.

Magnetic device definition with uniform biasing control

The invention offers a magnetic recording head that includes a substrate, a read sensor, and at least one shield positioned adjacent to the read sensor, wherein the shield contributes to thermal pole-tip recession in an amount less than about 0.5 &#x212b;/&#xb0; C. The invention also offers a magnetic recording head that includes a substrate having a coefficient of thermal expansion, a read sensor, and at least one shield, positioned adjacent to the read sensor, that has a coefficient of thermal expansion within &#xb1;2&#xd7;10/&#xb0; C. of the coefficient of thermal expansion of the substrate. The invention further offers a magnetic recording head that includes a substrate, a read sensor, and at least one shield, positioned adjacent the read sensor, with a thickness of from about 0.05 &#x3bc;m to about 0.5 &#x3bc;m.

Magnetic shields for reduced variations of head-media spacing

Growing community of inventors

Eden Prairie, MN, United States of America

Yifan Zhang