公开(公告)号：US08891204B2

公开(公告)日：2014-11-18

申请号：US13686568

申请日：2012-11-27

Applicant: Seagate Technology LLC

Inventor： Declan Macken ,  Eric Walter Singleton ,  Peter Jeremy Czoschke

IPC: G11B5/127 ,  G11B5/31 ,  G11B5/00

CPC classification number: G11B5/127 ,  G11B5/1278 ,  G11B5/3133 ,  G11B2005/0008

Abstract: A magnetic writer includes a write element having a first domain pattern when in a quiescent state and a second domain pattern when in an active state. A biasing structure is configured to induce the write element into the first domain pattern when the magnetic writer is in the quiescent state.

Abstract translation: 磁性写入器包括当处于静止状态时具有第一域图案的写入元件和处于活动状态时的第二域图案。 偏置结构被配置为当磁性写入器处于静止状态时将写入元件引入第一域图案。

公开(公告)号：US20140269838A1

公开(公告)日：2014-09-18

申请号：US13836124

申请日：2013-03-15

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Declan Macken

IPC: G01K7/16

CPC classification number: G11B5/607 ,  G01K13/06 ,  G11B5/6076

Abstract: A head transducer comprises a reader coupled to reader bond pads and configured to interact with a magnetic storage medium. A first thermal sensor is configured to produce a first sensor signal. The first sensor is biased relative to a common mode voltage at the reader bond pads. A second thermal sensor is configured to produce a second sensor signal. One of the first and second sensors is situated at or near a close point of the head transducer in relation to the magnetic storage medium, and the other of the first and second sensors spaced away from the close point. Circuitry is configured to combine the first and second sensor signals and produce a combined sensor signal indicative of one or both of a change in head-medium spacing and head-medium contact.

Abstract translation: 头传感器包括耦合到读取器接合焊盘并被配置为与磁存储介质相互作用的读取器。 第一热传感器被配置为产生第一传感器信号。 第一传感器相对于读取器接合焊盘处的共模电压而偏置。 第二热传感器被配置为产生第二传感器信号。 第一传感器和第二传感器中的一个位于头部换能器相对于磁性存储介质的接近点或其附近，并且第一和第二传感器中的另一个与近端点间隔开。 电路被配置为组合第一和第二传感器信号并产生指示头 - 介质间隔和头 - 介质接触的变化中的一个或两个的组合的传感器信号。

公开(公告)号：US20140146856A1

公开(公告)日：2014-05-29

申请号：US13687445

申请日：2012-11-28

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Wei Tian ,  Declan Macken ,  Huaqing Yin ,  Venkateswara Rao Inturi ,  Eric Walter Singleton

IPC: G01K7/16 ,  C23C14/06

CPC classification number: G01K7/16 ,  C23C14/06 ,  G11B5/607 ,  H01C7/006 ,  H01C7/008 ,  H01C7/021 ,  H01C7/06

Abstract: An apparatus comprises a head transducer and a resistive temperature sensor provided on the head transducer. The resistive temperature sensor comprises a first layer comprising a conductive material and having a temperature coefficient of resistance (TCR) and a second layer comprising at least one of a specular layer and a seed layer. A method is disclosed to fabricate such sensor with a laminated thin film structure to achieve a large TCR. The thicknesses of various layers in the laminated thin film are in the range of few to a few tens of nanometers. The combinations of the deliberately optimized multilayer thin film structures and the fabrication of such films at the elevated temperatures are disclosed to obtain the large TCR.

Abstract translation: 一种装置包括头部换能器和设置在头部换能器上的电阻式温度传感器。 电阻温度传感器包括包含导电材料并具有温度系数电阻（TCR）的第一层和包括镜面层和晶种层中的至少一个的第二层。 公开了一种制造具有层压薄膜结构的这种传感器以实现大TCR的方法。 层压薄膜中各层的厚度在几十纳米的范围内。 公开了故意优化的多层薄膜结构和在升高的温度下制备这种薄膜的组合以获得大的TCR。