Patent ID: 7132297

Claim:
A method for forming an integrated circuit structure comprising: providing a semiconductor substrate having an upper surface; forming a first plurality of conductive lines in a first layer overlying the upper surface; forming a second plurality of conductive lines in a second layer spaced apart from and overlying the first layer; interconnecting the first and the second plurality of conductive lines to form a helical conductor structure; and forming semiconductor material islands exhibiting ferromagnetic properties between the first and the second layers wherein the step of forming semiconductor material islands further comprises: (a) forming a silicon layer between the two interconnected conductor layers, wherein the silicon layer has a top surface; (b) forming a semiconductor material layer on the top surface; and (c) forming the semiconductor material islands from the semiconductor material layer; and Wherein the step (c) further comprises annealing the integrated circuit structure to form the semiconductor material islands, and wherein the duration and temperature characteristics of the annealing step affect the density and spacing of the semiconductor material islands.