Texture-control layer for spin torque oscillator
AssigneeWestern Digital Technologies, Inc.
InventorsSusumu Okamura, Yo Sato, Keiichi Nagasaka, Masashige Sato
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Abstract
A magnetic field-assisted magnetic recording (MAMR) head is provided, which includes a recording main pole and a texture control layer (TCL), a seed control layer, and a spin torque oscillator (STO) positioned over the main pole, in this order, in a stacking direction from a leading side to a trailing side of the recording head. The STO has a crystallographic preferred growth orientation and includes a spin polarized layer (SPL). The TCL may include a Cu layer.
Claims20
A spin torque device comprising:
- a texture control layer (TCL), a seed layer, and a spin torque oscillator (STO) positioned over a substrate, in this order;
- wherein:
- the STO comprises a spin polarized layer and a field generating layer;
- the TCL comprises at least a Cu layer.
A spin torque device comprising:
- a texture control layer (TCL), a seed layer, and a spin torque oscillator (STO), in this order;
- wherein:
- the STO comprises a spin polarized layer and a field generating layer;
- the spin polarized layer comprises a Co—Mn—Ge (CMG) layer sandwiched by two CoFe layers.
A magnetic field-assisted magnetic recording (MAMR) head comprising:
- a recording main pole;
- and
- a texture control layer (TCL), a seed layer, and a spin torque oscillator (STO) positioned over the main pole;
- wherein:
- the STO comprises a spin polarized layer and a field generating layer;
- the spin polarized layer comprises a Co—Mn—Ge (CMG) layer sandwiched by two CoFe layers.
Dependencies are inferred from the claim text.