Patent ID: 11956971
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 7:
8. A method comprising:
providing a stack of magnetic tunneling junction (MTJ) layers that includes a first pinned layer over a second pinned layer, wherein a top portion of the first pinned layer and the second pinned layer have different crystallographic orientations, and wherein the first pinned layer is exposed;
cooling the stack of MTJ layers to a first temperature;
after cooling the stack of MTJ layers, forming a first material layer on the stack of MTJ layers without maintaining the stack of MTJ layers at the first temperature, and
forming a free layer on the first material layer disposed on the stack of MTJ layers, wherein the forming of the free layer includes:
forming a first free layer on the first material layer without cooling the first free layer during the forming of the first free layer, the first free layer formed of a first material;
cooling the first free layer by applying a second temperature to the first free layer; and
forming a second free layer on the first free layer without maintaining the first free layer at the second temperature, the second free layer formed of a second material that is different than the first material.