PATENT CLAIM ANALYSIS

Application Number: 15906775
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-02
Patent Classification: ["257", "427000"]

Abstract:
A magnetic tunnel junction device includes a first ferromagnetic layer, a tunnel barrier that is in contact with the first ferromagnetic layer, and a synthetic ferrimagnetic reference layer that is in contact with the tunnel barrier while being in the other side of the first ferromagnetic layer, in which the synthetic ferrimagnetic reference layer includes a second ferromagnetic layer that has a first magnetization direction while being in contact with the tunnel barrier, a magnetic layer that has a second magnetization direction which is anti-parallel to the first magnetization direction, and a first nonmagnetic layer that is interposed between the second ferromagnetic layer and the magnetic layer, and lateral dimensions of the magnetic layer of the synthetic ferrimagnetic reference layer are made larger than lateral dimensions of the first ferromagnetic layer and the second ferromagnetic layer.

Claim (Index 10):
A method for fabricating a magnetic tunnel junction device, comprising:\n forming a synthetic film of which a hard mask layer is formed in an uppermost layer, which includes a first ferromagnetic layer, a tunnel barrier, a second ferromagnetic layer, a first nonmagnetic layer, and a third ferromagnetic layer in sequence from an upper layer; patterning the hard mask layer into a shape of a pillar; performing dry etching of the synthetic film by plasma etching using the patterned hard mask layer as a mask and etching stop at a surface or in a middle of the second ferromagnetic layer; forming a magnetization elimination layer by eliminating magnetization of a region which is an outside rather than the patterned hard mask layer, in the second ferromagnetic layer; forming a side wall deposition layer by chemical vapor deposition on the synthetic film which is patterned; and performing dry etching of the magnetization elimination layer, the first nonmagnetic layer, and the third ferromagnetic layer by plasma etching using the patterned hard mask layer and the side wall deposition layer as a mask, wherein the first nonmagnetic layer has a material and a film thickness such that a magnetization direction of the third ferromagnetic layer is anti-parallel to a magnetization direction of the second ferromagnetic layer, and a synthetic ferrimagnetic reference layer of the magnetic tunnel junction device consists of the patterned second ferromagnetic layer, the first nonmagnetic layer, and the third ferromagnetic layer.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 88.0
- Lexical Diversity: 3.25
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13762799', '15445362', '14710616', '14551095', '12510063']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9272355255589808
- 35 USC 102 Novelty (BERT): 0.5092613993937597
- Combined Prediction Score: 0.8854381129424589
- Mean Citation Score: 292.008984
- Max Citation Score: 301.37277
- Similarity Product: 231.01674133461

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test