Patent ID: 9070381
Filing Date: 2015-06-30
Classification: G11B

Abstract:
1. A magnetic transducer having an air-bearing surface (ABS) and comprising: a first shield; a second shield; and a read sensor between the first shield and the second shield, the read sensor including a free layer including a plurality of ferromagnetic layers interleaved with and sandwiching at least one additional layer, each of the plurality of ferromagnetic layers including B and at least one of Fe and Co, each of the ferromagnetic layers having a first corrosion resistance, the at least one additional layer has a second corrosion resistance greater than the first corrosion resistance, the at least one additional layer including at least one of NiFe, Ru, Ti, Mg, MgO, Ta, Cr and alumina, the free layer further including a magnetic layer including CoFe and adjoining one of the plurality of ferromagnetic layers.