Appeal No. 2002-1502
Application No. 09/388,885
a pinned layer disposed between the
antiferromagnetic layer and the tunnel barrier layer;
and
a ferromagnetic free layer formed on the tunnel barrier
layer, said free layer comprising:
a first sublayer formed on the tunnel barrier
layer; and
a second sublayer formed on the first sublayer,
wherein said second sublayer is made of
supermalloy (Ni-Fe-Mo) having a thickness in the
range of 60-80 D.
In addition to the admitted prior art, the examiner relies
upon the following reference as evidence of obviousness:
Dahlberg et al. (Dahlberg) 5,747,997 May 05, 1998
Appellant’s claimed invention is directed to a magnetic
tunnel junction (MTJ) magnetorestive sensor comprising, inter
alia, a ferromagnetic free layer comprising first and second
sublayers, wherein the second sublayer is a supermalloy of
(Ni-Fe-Mo). Also, the second sublayer has a thickness in the
range of 60-80 D.
According to appellant, by using the claimed supermalloy
having a thickness within the claimed range in place of the
conventional layer of Ni-Fe, an increase in the thickness of the
2
Page: Previous 1 2 3 4 5 6 7 Next
Last modified: November 3, 2007