Interface technology of ultra-low flying height and highly stable head–disk interface for perpendicular magnetic recording |
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Authors: | Hui Li Jin Liu Bo Liu Mingsheng Zhang Leonard Gonzaga Tow-Chong Chong |
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Affiliation: | aNational University of Singapore, Singapore, Republic of Singapore;bData Storage Institute, DSI Building, 5 Engineering Drive 1, Singapore 117608, Republic of Singapore |
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Abstract: | This paper reports authors’ efforts in slider and interface technologies with extremely small and very high stability head–disk spacing. The dual shallow step strategy is proposed in the femto form-factor slider design. It is found that the dual shallow step design is very effective in reducing flying height modulation (FHM) caused by disk waviness and enhancing the cooling effects on the read/write elements. A simple geometric model is built to explain the schematic of the improvement in FHM. |
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Keywords: | Tribology Head– disk interface Analysis and models |
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