INTEGRATED CIRCUITS WITH MAGNETIC TUNNEL JUNCTIONS AND METHODS FOR PRODUCING THE SAME
First Claim
1. An integrated circuit comprising:
- a fixed layer that is magnetic;
a tunnel barrier layer overlying the fixed layer, wherein the tunnel barrier layer is non-magnetic;
a total free layer overlying the tunnel barrier layer, wherein the total free layer comprises a plurality of individual free layers, wherein each of the plurality of individual free layers includes one or more of cobalt, iron, or boron, wherein each of the plurality of individual free layers is magnetic, and wherein at least one of the plurality of individual free layers comprises an atomic ratio of cobalt to iron that is from about 0.9/1 to about 1.1/1.
3 Assignments
0 Petitions
Accused Products
Abstract
Integrated circuits and methods of producing the same are provided. In an exemplary embodiment, an integrated circuit includes a fixed layer that is magnetic and a tunnel barrier layer overlying the fixed layer, where the tunnel barrier layer is non-magnetic. A total free layer overlies the tunnel barrier layer, where the total free layer includes a plurality of individual free layers, wherein each of the plurality of individual free layers includes one or more of cobalt, iron, or boron, and where each of the plurality of individual free layers is magnetic. At least one of the plurality of individual free layers includes an atomic ratio of cobalt to iron that is from about 0.9/1 to about 1.1/1.
14 Citations
20 Claims
-
1. An integrated circuit comprising:
-
a fixed layer that is magnetic; a tunnel barrier layer overlying the fixed layer, wherein the tunnel barrier layer is non-magnetic; a total free layer overlying the tunnel barrier layer, wherein the total free layer comprises a plurality of individual free layers, wherein each of the plurality of individual free layers includes one or more of cobalt, iron, or boron, wherein each of the plurality of individual free layers is magnetic, and wherein at least one of the plurality of individual free layers comprises an atomic ratio of cobalt to iron that is from about 0.9/1 to about 1.1/1. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. An integrated circuit comprising:
-
a fixed layer that is magnetic; a tunnel barrier layer overlying the fixed layer, wherein the tunnel barrier layer is non-magnetic; a total free layer overlying the tunnel barrier layer, wherein the total free layer comprises a plurality of individual free layers wherein each of the plurality of individual free layers are magnetic, wherein at least one of the plurality of individual free layers comprise a tempco element, wherein the tempco element is at least one of samarium, dysprosium, copper, molybdenum, tungsten, and zirconium. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
-
-
20. A method of forming an integrated circuit comprising:
-
forming a fixed layer that is magnetic; forming a tunnel barrier layer overlying the fixed layer, wherein the tunnel barrier layer is non-magnetic; and forming a total free layer overlying the tunnel barrier layer, wherein the total free layer comprises a first free layer that is magnetic, a second free layer that is magnetic, and a first spacer layer between the first free layer and the second free layer wherein the first spacer layer in non-magnetic, wherein the first free layer has a first free layer temperature coefficient, the second free layer has a second free layer temperature coefficient that is different than the first free layer temperature coefficient, and the total free layer has a total free layer temperature coefficient that is between the first free layer temperature coefficient and the second free layer temperature coefficient.
-
Specification