Antiferromagnetic (AFM) grain growth controlled random telegraph noise (RTN) suppressed magnetic head

摘要

In one embodiment, a magnetic read head includes an antiferromagnetic (AFM) layer including a MnIr alloy having an L12 ordered phase, a pinned layer positioned above the AFM layer, and a seed layer positioned directly below the AFM layer, wherein the seed layer includes a laminated structure with an upper layer including Ru being positioned above one or more additional layers. In another embodiment, a magnetic read head includes an AFM layer including a MnIr alloy having an L12 ordered phase, a pinned layer positioned above the AFM layer, and a seed layer positioned directly below the AFM layer, the seed layer including a laminated structure of Ta/Y/Ru, wherein Y is a layer having an element or an alloy. Other magnetic heads having a reduced amount of random telegraph noise (RTN) and methods of formation thereof are disclosed according to more embodiments.

主权项

1. A magnetic read head, comprising:
an antiferromagnetic (AFM) layer comprising a Mnlr alloy having an Ln ordered phase; a pinned layer positioned above the AFM layer; and a seed layer positioned directly below the AFM layer, wherein the seed layer comprises a laminated structure comprising at least three layers, with an upper layer comprising Ru being positioned above one or more additional layers.