Spintronic Device Comprising Dual FGL and Dual SPL To Reduce Perpendicular Field At Writing Location
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United States of America
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Issued Date -
Mar 13, 2025
app pub date -
Nov 26, 2024
filing date -
Nov 26, 2024
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Abstract
The present disclosure is generally related to a magnetic recording device comprising a magnetic recording head. The magnetic recording head comprises a main pole, a hot seed layer, and a spintronic device disposed between the main pole and the hot seed layer. The spintronic device comprises two field generation layers (FGLs), two spin polarization layers (SPLs), and two spin kill layers. The second SPL of the spintronic device drives the second FGL. The spintronic device further comprises one or more optional thin negative beta material layers, such as layers comprising FeCr, disposed in contact with at least one of the spin kill layers. When electric current is applied, the spin kill layers and optional negative beta material layers eliminate or reduce any spin torque between the FGLs and the SPLs.
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