Side shield pedestal for data readers
AssigneeSeagate Technology LLC
InventorsVictor Boris Sapozhnikov, Mohammed Shariat Ullah Patwari, Shaun Eric McKinlay, Eric Walter Singleton
Life of this patent
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Abstract
Various embodiments may be generally directed to a magnetic element capable of reading magnetic data bits. Such a magnetic element may have at least a magnetic stack laterally adjacent a side shield and non-magnetic pedestal on an air bearing surface (ABS). The non-magnetic pedestal can be configured to have a greater stripe height from the ABS than the side shield.
Claims19
A data reader comprising a magnetic stack having a free layer laterally adjacent a side shield and non-magnetic pedestal, the side shield and non-magnetic pedestal each positioned on an air bearing surface (ABS), the magnetic stack including the free layer having a first stripe height, the side shield having a second stripe height, and the non-magnetic pedestal having a third stripe height, the first, second, and third stripe heights each measured from the ABS, the second stripe height being smaller than the first and third stripe heights, the non-magnetic pedestal continuously extends from the second stripe height to the first stripe height, the first and third stripe heights being the same.
An apparatus comprising a magnetic stack having a free layer laterally adjacent a side shield and non-magnetic pedestal, the side shield and non-magnetic pedestal each positioned on an air bearing surface (ABS), the magnetic stack including the free layer and non-magnetic pedestal respectively having first and second stripe heights each measured from the ABS, the side shield having a first portion with a third stripe height from the ABS and a second portion with a fourth stripe height from the ABS, the third stripe height being smaller than the first, second and fourth stripe heights, the second and fourth stripe heights being the same, the non-magnetic pedestal continuously extends from the third stripe height to the first stripe height, the first and second stripe heights being the same.
A magnetic element comprising a magnetic stack having a free layer laterally adjacent a side shield, the side shield positioned atop a non-magnetic pedestal, the side shield and non-magnetic pedestal each positioned on an air bearing surface (ABS), the magnetic stack, including the free layer side shield, and non-magnetic pedestal respectively having first, second, and third stripe heights each measured from the ABS, the side shield having a first portion with a first thickness at the ABS that is greater than a second thickness of a second portion of the side shield distal the ABS, the second stripe height being smaller than the first and third stripe heights, the non-magnetic pedestal continuously extends from the second stripe height to the first stripe height, the first and third stripe heights being the same.
Dependencies are inferred from the claim text.