发明名称 |
CURRENT-PERPENDICULAR-TO-THE-PLANE (CPP) MAGNETORESISTIVE (MR) SENSOR WITH IMPROVED INSULATING STRUCTURE |
摘要 |
A current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor, like a CPP MR disk drive read head, has an improved insulating structure surrounding the stack of layers making up the sensor. The sensor has a first silicon nitride layer with a thickness between about 1 and 5 nm on the side edges of the sensor and on regions of the bottom shield layer adjacent the sensor below the sensor's ferromagnetic biasing layer. The sensor has a second silicon nitride layer with a thickness between about 2 and 5 nm on the back edge of the sensor and on the region of the bottom shield layer adjacent the sensor back edge, and a substantially thicker metal oxide layer on the second silicon nitride layer. The insulating structure prevents edge damage at the perimeter of the sensor and thus allows for the fabrication of CPP MR read heads with substantially smaller dimensions. |
申请公布号 |
US2012063034(A1) |
申请公布日期 |
2012.03.15 |
申请号 |
US20100880953 |
申请日期 |
2010.09.13 |
申请人 |
HSU YIMIN;HWANG CHERNGYE;LIAO SIMON HUANGCHUNG;MAAT STEFAN;HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V. |
发明人 |
HSU YIMIN;HWANG CHERNGYE;LIAO SIMON HUANGCHUNG;MAAT STEFAN |
分类号 |
G11B5/127 |
主分类号 |
G11B5/127 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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