Method and system for providing a magnetic layer in a magnetic junction usable in spin transfer or spin orbit torque applications using a sacrificial oxide layer
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United States of America Patent
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Oct 8, 2019
Grant Date -
Aug 30, 2018
app pub date -
Apr 27, 2018
filing date -
Mar 7, 2016
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Abstract
A magnetic device and method for providing the device are described. The magnetic device includes magnetic junction(s) and spin-orbit interaction active layer(s) adjacent to the magnetic junction free layer(s). The magnetic junction includes free and pinned layers separated by a nonmagnetic spacer layer. The free layer is switchable between stable magnetic states. Providing the pinned and/or free layer(s) includes providing a magnetic layer including a glass-promoting component, providing a sacrificial oxide on the magnetic layer, providing a sacrificial layer on the sacrificial oxide and performing anneal(s) of the magnetic layer, the sacrificial oxide layer and the sacrificial layer at anneal temperature(s) greater than 300 degrees Celsius and not exceeding 475 degrees Celsius. The magnetic layer is amorphous as-deposited but is at least partially crystallized after the anneal(s). The sacrificial layer includes a sink for the glass-promoting component. The sacrificial layer and the sacrificial oxide are removed after the anneal(s).
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