Spintronics: Electron Spin, Memory and Magnetic Sensors
Yenra | Updated September 17, 2026
Article: https://yenra.com/spintronics/

SPINTRONIC DEVICE CLAIM REVIEW
Purpose: compare a memory or sensor claim at an explicit boundary.
Application and required outcome:
Source URL/date and evidence stage:
Structure: GMR / TMR / MTJ memory / other
Device, circuit or system boundary:
Operating bias, temperature, geometry and bandwidth:
Memory: write/read timing, error rate, retention conditions, endurance definition:
Sensor: field range/direction, sensitivity, noise, hysteresis, calibration:
Sample count, distribution and repeated-test evidence:
Energy quantity and included circuitry:

ILLUSTRATIONS ONLY
TMR = (20 kOhm - 10 kOhm)/10 kOhm x 100% = 100%.
Constant-pulse energy = 0.7 V x 50 microA x 10 ns = 0.35 pJ at that boundary.
Neither calculation supplies device operating settings or a complete-system guarantee.
Evidence missing before the application decision:

SOURCE REFERENCES
NVE’s GMR explanation
https://www2.nve.com/gmrsensors/gmr-operation.htm
IBM’s account of STT-MRAM materials
https://research.ibm.com/publications/advances-in-spin-transfer-torque-mram
Everspin’s STT-MRAM technology description
https://www.everspin.com/stt-mram-technology
NVE’s sensor families
https://www.nve.com/sensors
review of STT-switched junctions
https://research.ibm.com/publications/spin-transfer-torque-switched-magnetic-tunnel-junction-for-memory-technologies