We claim:
1. A system for instructing a student at a remote location comprising:
(a) a teaching center having a computer;
(b) a student computer at the remote location in communication with the teaching center computer for presentation of instructional material; and
(c) student identification means associated with the student computer having means for identification and confirming the presence of a particular student.
2. The system of claim 1 wherein said teaching center and remote locations are in voice communication.
3. The system of claim 1 wherein said student identification means comprises biometric means.
4. The system of claim 1 wherein said student identification system comprises a web camera.
5. The system of claim 1 wherein said system includes software for course curricula, student tracking, student attendance and progress.
6. The system of claim 3 wherein said biometric means are selected from the group consisting of fingerprint scan, voice recognition and anatomical scan.
7. The system of claim 1 wherein said student identification means require the student to periodically perform a manipulation during the instructional course period.
8. The system of claim 9 wherein said teaching center provides live scheduled instructional periods during which students can participate in a Q and A exchange.
9. The system of claim 1 wherein said instructional material is configured on an electronic recording media.
10. The system of claim 9 wherein the electronic recording media is a CD.
11. The system of claim I wherein said instructional material includes hyper links to selected web sites.
12. An instructional system for instructing a student comprising:
(a) a instructional center having a computer;
(b) a student computer at a remote location for delivering instructional material;
(c) unique student identification means for identifying the presence of a particular student and activating the system permitting access to the material only when said student identification is confirmed; and
(d) on-going recognition means for recognizing the presence of the particular student during the instructional period.
13. The system of claim 12 wherein said on-going recognition means provides data which is stored to establish an audit trail.
14. The system of claim 12 wherein said instruction center is selected from the group consisting of private schools, technical schools, public schools or professional continuing education centers.
15. The system of claim 12 wherein said instructional center and said student computer are in communication is via a global computer communications network.
16. The system of claim 15 wherein said student computer is linked to selected web sites to provide instructional material to the student.
17. The system of claim 12 wherein said computer at said instructional center can provide both instructional material and testing to the student.
18. The system of claim 12 wherein said recognition means is selected from the group consisting of biometrics, body scan, voice recognition and image recognition.
19. A system for instructing a student at a remote location comprising:
(a) means for acquiring and storing instructional material;
(b) remote means for accessing said material; and
(c) verification means for confirming the presence of a particular student at said remote means.
20. The system of claim 19 including a machine readable instruction for performing steps (a) to (c).
21. The system of claim 15 wherein a comprehensive and fully integrated computer and global communication system implements, operates and administers the system.
22. An instructional system for instructing a student comprising:
(a) a student computer programmed to deliver instructional material to the student
(b) student identification means associated with the student computer for identifying and confirming the presence of a particular student.
23. The instructional system of claim 22 where said student identification means comprise biometrics.
24. The instructional system of claim 23 wherein said instructional material is delivered via electronic media.
25. The instructional system of claim 23 wherein a comprehensive and fully integrated computer and global communication system operates and administers the system.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A magnetic tunnel junction comprising:
a ferromagnetic free layer and a first ferromagnetic pinned reference layer, each having an out-of-plane magnetic anisotropy and an out-of-plane magnetization orientation, the ferromagnetic free layer magnetization orientation configured to be switchable by spin torque imparted by a spin polarized current passing through the ferromagnetic free layer;
a first oxide barrier layer between the ferromagnetic free layer and the the first ferromagnetic pinned reference layer; and
a ferromagnetic spin polarizing assist layer having low magnetic anisotropy less than 700 Oe and positioned to apply a magnetic field on the ferromagnetic free layer.
2. The magnetic tunnel junction of claim 1 wherein the ferromagnectic spin polarizing assist layer has in-plane magnetic anisotropy.
3. The magnetic tunnel junction of claim 1 wherein the ferromagnetic spin polarizing assist layer has out-of-plane magnetic anisotropy.
4. The magnetic tunnel junction of claim 1 wherein the ferromagnetic spin polarizing assist layer comprises at least one of Co, Ni, Fe or an alloy thereof.
5. The magnetic tunnel junction of claim 1 wherein the ferromagnetic spin polarizing assist layer has a magnetic moment of less than 1100 emucc.
6. The magnetic tunnel junction of claim 1 further comprising a second pinned reference layer having an out-of-plane magnetic anisotropy and an out-of-plane magnetization orientation, the ferromagnetic spin polarizing assist layer positioned between the ferroomagnetic free layer and the second pinned reference layer.
7. The magnetic tunnel junction of claim 6 comprising a conductive non-ferromagnetic spacer layer between the ferromagnetic spin polarizing assist layer and the ferromagnetic free layer.
8. The magnetic tunnel junction of claim 6 comprising an electrically insulative spacer layer between the ferromagnetic spin polarizing assist layer and the ferromagnetic free layer.
9. The magnetic tunnel junction of claim 6 wherein upon passage of a current through the magnetic cell, the magnetization orientation of the ferromagnetic spin polarizing assist layer is at least 10 degrees from in-plane.
10. The magnetic tunnel junction of claim 6 wherein the magnetic cell is a magnetic tunnel junction memory cell.
11. The magnetic tunnel junction of claim 1 further comprising a first enhancement layer and a second enhancement layer, the first enhancement layer between the oxide barrier layer and the ferromagnetic free layer and the second enhancement layer between the oxide barrier layer and the first ferromagnetic pinned reference layer.
12. The magnetic tunnel junction of claim 11 further comprising a third enhancement layer proximate the second pinned reference layer.
13. The magnetic tunnel junction of claim 12 further comprising a second oxide barrier layer between the ferromagnetic spin polarizing assist layer and the third enhancement layer.
14. A magnetic cell on a substrate, the memory cell comprising:
a ferromagnetic free layer having an out-of-plane magnetic anisotropy and an out-of-plane magnetization orientation configured to be switchable by spin torque imparted by a spin polarized current passing through the ferromagnetic free layer;
a first ferromagnetic pinned reference layer having an out-of-plane magnetic anisotropy and an out-of-plane magnetization orientation;
an oxide barrier layer between the ferromagnetic free layer and the first ferromagnetic pinned reference layer; and
a ferromagnetic assist stack proximate the ferromagnetic free layer having low magnetic anisotropy, the assist stack comprising an assist layer having a magnetic moment less than about 1000 emucc and a magnetization orientation that rotates upon application of current through the assist layer.
15. The magnetic cell of claim 14 wherein the assist layer has in-plane magnetic anisotropy.
16. The magnetic cell of claim 15 wherein the magnetization orientation of the assist layer is at least 10 degrees from in-plane.
17. The magnetic cell of claim 14 wherein the assist layer has a low magnetic anisotropy less than 500 Oe.
18. A method of writing to a memory cell comprising:
passing a current through a memory cell comprising a free layer and a reference layer, each having an out-of-plane anisotropy and magnetization orientation, the current having an electron flow direction;
rotating a magnetization orientation of an assist layer proximate the free layer with the current, the assist layer having a magnetic anisotropy less than 700 Oe and the assist layer applies a magnetic field on the free layer; and
orienting the magnetization orientation of the free layer in the electron flow direction with the assistance of the magnetic field.
19. The method of claim 18 further comprising:
passing the current through a second reference layer having an out-of-plane anisotropy and magnetization orientation.
20. The method of claim 18 wherein rotating a magnetization orientation of an assist layer comprises rotating the magnetization orientation at least 10 degrees from in-plane.