Seagate Technology Incorporated

Xiaoping Yan

Paul Max Jones

Yiao-Tee Hsia

Lei Li

Michael Joseph Stirniman

JiPing Yang

James Dillon Kiely

Christopher Loren Platt

Qian Guo

Wenhong Liu

A magnetic data storage medium may include a substrate, a magnetic recording layer, a protective carbon overcoat, and a monolayer covalently bound to carbon atoms adjacent a surface of the protective carbon overcoat. According to this aspect of the disclosure, the monolayer comprises at least one of hydrogen, fluorine, nitrogen, oxygen, and a fluoro-organic molecule. In some embodiments, a surface of a read and recording head may also include a monolayer covalently bound to carbon atoms of a protective carbon overcoat.

Covalently bound monolayer for a protective carbon overcoat

Disclosed herein are compounds of formula I:X-(L-Z)-L-R[L-(Z-L)-Y]&#x2003;&#x2003;(I)wherein L is a perfluoropolyether;R is q can be an integer equal to or greater than 1;p can independently be integers from 0 to 7;X and Y can independently be chosen from: &#x2014;OH, &#x2014;CHCHOH, CHCHOCHCHOH, &#x2014;CHCH(OH)CHOH, &#x2014;CH, &#x2014;CHCH, &#x2014;CHCH(OH)CH, F, &#x2014;CF, &#x2014;CFCF, piperonyl, triazine, benzotriazole, and derivatives thereof; andZ, if present, can independently be chosen from: &#x2014;CH&#x2014;, &#x2014;CHCHCH&#x2014;, &#x2014;CHCH(OH)CH&#x2014;, &#x2014;CHCH(OH)CHCH(OH)CH&#x2014;, &#x2014;CH(OH)CH(OH)CH&#x2014;, &#x2014;CH(CHOH)&#x2014;, or &#x2014;CH(CH)&#x2014;.

Lubricants for data storage

A lubricant layer for a magnetic recording medium may include a perfluoropolyether having monomer units and end groups selected to provide high thermal stability and good reliability.

Media lubricant for high temperature application

A data storage device comprising a storage medium having a recordable surface, a transducing head having a bearing surface positioned adjacent to the recordable surface of the storage medium, and at least one compound disposed between the recordable surface and the bearing surface, the at least one compound comprising at least one functional group that imparts corrosion resistance and at least one functional group that imparts lubricating properties.

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Wexford, PA, United States of America

Xiaoping Yan