PATENT CLAIM ANALYSIS

Application Number: 15933479
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-09
Patent Classification: ["257", "421000"]

Abstract:
A perpendicularly magnetized magnetic tunnel junction (p-MTJ) is disclosed wherein a free layer (FL) has a first interface with a MgO tunnel barrier, a second interface with a Mo or W Hk enhancing layer, and is comprised of Fe x Co y B z  wherein x is 66-80, y is 5-9, z is 15-28, and (x+y+z)=100 to simultaneously provide a magnetoresistive ratio >100%, resistance x area product <5 ohm/μm 2 , switching voltage <0.15V (direct current), and sufficient Hk to ensure thermal stability to 400° C. annealing. The FL may further comprise one or more M elements such as 0 or N to give (Fe x Co y B z ) w M 100-w  where w is >90 atomic %. Alternatively, the FL is a trilayer with a FeB layer contacting MgO to induce Hk at the first interface, a middle FeCoB layer for enhanced magnetoresistive ratio, and a Fe or FeB layer adjoining the Hk enhancing layer to increase thermal stability.

Claim (Index 1):
A perpendicularly magnetized magnetic tunnel junction (p-MTJ) formed in a memory device, comprising:\n (a) a reference layer (RL) with a fixed magnetization oriented in a direction perpendicular to a surface thereof; (b) a free layer (FL) comprised of at least Co, Fe, and B in a composition that is Fe x Co y B z  where x is 66-80, y is 5-9, z is 15-28, x+y+z=100, and with a magnetization oriented perpendicular to first and second surfaces thereof, and wherein the FL magnetization may be switched from a direction parallel to the RL direction to an anti-parallel direction to the RL fixed magnetization; (c) a tunnel barrier layer comprised of one or more metal oxides formed between the first surface of the free layer and the reference layer; and (d) a Hk enhancing layer comprised of W, Mo, or alloys thereof and adjoining the second surface of the free layer that is opposite to the first surface wherein the Hk enhancing layer induces perpendicular magnetic anisotropy (PMA) at an interface with the second surface.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 90.0
- Lexical Diversity: 1.86275
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15881035', '15461779', '15477288', '13686169', '13068222']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.934285028089606
- 35 USC 102 Novelty (BERT): 0.5496733695150308
- Combined Prediction Score: 0.8958238622321486
- Mean Citation Score: 371.709174
- Max Citation Score: 421.8547
- Similarity Product: 346.12311333696243

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test