Magnetoresistive element, magnetic head, magnetic reproducing apparatus, and magnetic memory
First Claim
1. A magnetoresistive element comprising:
- a magnetoresistive film comprising;
a magnetization pinned layer whose magnetization is substantially pinned to one direction;
a nonmagnetic intermediate layer formed on the magnetization pinned layer; and
a magnetization free layer, formed on the nonmagnetic intermediate layer, whose magnetization is changed in direction depending on an external magnetic field, the magnetization pinned layer or nonmagnetic intermediate layer comprising an insulator; and
a pair of electrodes electrically connected to the magnetoresistive film so as to supply a sense current in a direction substantially perpendicular to a plane of the magnetoresistive film, the magnetization free layer comprising a body-centered cubic layer with a body-centered cubic structure, and the thickness of the body-centered cubic layer being 2 nm or more.
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Accused Products
Abstract
A magnetoresistive element includes a magnetoresistive film having a magnetization pinned layer whose magnetization is substantially pinned to one direction, a nonmagnetic intermediate layer, and a magnetization free layer whose magnetization is changed in direction depending on an external magnetic field, in which the magnetization pinned layer or nonmagnetic intermediate layer includes an insulator, and a pair of electrodes electrically connected to the magnetoresistive film so as to supply a sense current in a direction substantially perpendicular to a plane of the magnetoresistive film. The magnetization free layer includes a body-centered cubic layer with a body-centered cubic structure, and the thickness of the body-centered cubic layer is 2 nm or more.
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Citations
18 Claims
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1. A magnetoresistive element comprising:
-
a magnetoresistive film comprising;
a magnetization pinned layer whose magnetization is substantially pinned to one direction;
a nonmagnetic intermediate layer formed on the magnetization pinned layer; and
a magnetization free layer, formed on the nonmagnetic intermediate layer, whose magnetization is changed in direction depending on an external magnetic field, the magnetization pinned layer or nonmagnetic intermediate layer comprising an insulator; and
a pair of electrodes electrically connected to the magnetoresistive film so as to supply a sense current in a direction substantially perpendicular to a plane of the magnetoresistive film, the magnetization free layer comprising a body-centered cubic layer with a body-centered cubic structure, and the thickness of the body-centered cubic layer being 2 nm or more. - View Dependent Claims (2, 3, 4, 5, 6, 7, 13, 14, 15)
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8. A magnetoresistive element comprising:
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a magnetoresistive film comprising;
a buffer layer;
an antiferromagnetic layer formed on the buffer layer;
a magnetization pinned layer, formed on the antiferromagnetic layer, whose magnetization is substantially pinned to one direction;
a nonmagnetic intermediate layer formed on the magnetization pinned layer; and
a magnetization free layer, formed on the nonmagnetic intermediate layer, whose magnetization is changed in direction depending on an external magnetic field, at least one layer of the magnetization pinned layer, nonmagnetic intermediate layer and magnetization free layer comprising an insulator; and
a pair of electrodes electrically connected to the magnetoresistive film so as to supply a sense current in a direction substantially perpendicular to a plane of the magnetoresistive film, the buffer layer comprising three layers selected from the group consisting of Ta layer, (Ni100-xFex)100-yCry alloy layer (15≦
x≦
25, 20≦
y≦
30), (Ni100-xFex)100-yCry alloy layer (15≦
x≦
25, 30<
y≦
45), Cu layer, Ru layer, and Co100-xFex layer (5<
x<
15). - View Dependent Claims (9, 10, 11, 12, 16, 17, 18)
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Specification