1 / 70

Good Hysteresis on die g3

Good Hysteresis on die g3. SW2140 – MTJ All shown junctions haven’t been broken down, can be further measured. Index . Potentially good junctions that have been further measured with finer field steps. ---------- 3 Junctions that may also be good but didn’t measure further. -------------- 21

sylvia
Download Presentation

Good Hysteresis on die g3

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Good Hysteresis on die g3 SW2140 – MTJ All shown junctions haven’t been broken down, can be further measured.

  2. Index • Potentially good junctions that have been further measured with finer field steps. ---------- 3 • Junctions that may also be good but didn’t measure further. -------------- 21 • Something junctions that don’t fit the model. ------- 31 • Hysteresis with finer field steps and compare to the model ---------------------- 34 (most interesting data) • Summary ------------------ 67 (most interesting data)

  3. Good Junctions Will be tested by finer field steps for hysteresis…

  4. C26 – 40 x 100 E

  5. C27 – 40 x 100 E

  6. E28 – 50 x 100 R

  7. I30 – 50 x 150 E

  8. J26 – 50 x 150 H

  9. L24 – 60 x 120 E

  10. O27 – 60 x 180 E

  11. O30 – 60 x 180 E

  12. P26 – 60 x 180 H

  13. P27 60 x 180 H

  14. Q30 – 80 x 160 R

  15. R25 – 80 x 160 E

  16. S28 – 80 x 160 H

  17. T29 – 80 x 240 E

  18. U27 – 80 x 240 H

  19. U28 – 80 x 240 H

  20. U30 – 80 x 240 H

  21. Also good junction… Fit the model, but may not worth further measure…

  22. C29 – 40 x 100 E Hysteresis loop not stable

  23. E25 – 50 x 100 R No sharp switching

  24. F28 – 50 x 100 E No sharp switching

  25. F30 – 50 x 100 E Hysteresis loop not stable

  26. G25 – 50 x 100 H Peaks not even

  27. J30 – 50 x 150 H Minor loop too narrow

  28. M24 – 60 x 120 H No sharp switching

  29. M26 – 60 x 120 H Hysteresis loop not stable

  30. R28 – 80 x 160 E No sharp switching

  31. Cannot understand Type 1: major loop looks OK, but no good minor loop, the two peaks in major loop have different height in most cases. Type 2: good minor loop, the two peaks in major loop are almost separate from each other. May require finer steps in major loop

  32. Type 1 B26, B27, E30, F25, F26, I26, J21, J29….

  33. Type 2 If this is only because major loop field steps are too large, then we have about 20 more possible good junctions

  34. Check results:

  35. C26: 40 x 100 E Rmin : 1297 Ω Rmax:2718 Ω MR: 110% AP Region : Red: ( 0.025 T, 0.069 T ) Blue: ( -0.013 T , 0.043T ) Free Layer: -0.013 T ~ 0.025 T Hc = 19 mT SAF: 0.043 T ~ 0.069 T Hc = 13 mT

  36. C26: 40 x 100 E Free: Hc = 19 mT SAF: Hc= 13 mT ( -0.013 T , 0.025 T ) ( 0.044 T , 0.070T )

  37. C27: 40 x 100 E Rmin : 1271 Ω Rmax : 2675 Ω MR: 110 % AP Region : Red: ( 0.003 T , 0.068 T ) Blue: ( -0.024 T , 0.059 T ) Free Layer: -0.024 T ~ 0.03 T Hc = 13.5 mT SAF: 0.059 T ~ 0.068 T Hc = 4.5 mT

  38. C27: 40 x 100 E Free: Hc = 14 mT SAF: Hc= 0.5 mT ( -0.025 T , 0.03 T ) ( 0.059T , 0.060T )

  39. E28: 50 x 100 R Less steps More steps Not stable

  40. I30: 50 x 150 E Rmin : 699 Ω Rmax :1433 Ω Magneto-Resistance :105% AP Region : Red: ( 0.018 T , 0.066 T ) Blue: ( -0.028 T , 0.053 T ) Free Layer: -0.028 T ~ 0.018 T Hc = 23 mT SAF: 0.053 T ~ 0.066 T Hc = 4 mT

  41. I30: 50 x 150 E Free: Hc = 9.5 mT SAF: Hc= 5.5 mT ( 0.001 T , 0.02 T ) ( 0.053T , 0.064T )

  42. J26: 50 x 150 H Rmin : 628 Ω Rmax : 1305Ω Magneto-Resistance : 108% AP Region : Red: ( 0.022 T , 0.078 T ) Blue: ( -0.029 T , 0.043 T ) Free Layer: -0.029 T ~ 0.022 T Hc = 25.5 mT SAF: 0.043 T ~ 0.078 T Hc = 17.5 mT

  43. J26: 50 x 150 H Free: Hc = 7 mT SAF: Hc= 2.5 mT ( 0.008 T , 0.022 T ) ( 0.043T , 0.048T )

  44. L24: 60 x 120 E Rmin : 645Ω Rmax : 1368Ω Magneto-Resistance : 112 % AP Region : Red: ( 0.036 T , 0.08 T ) Blue: ( -0.027 T , 0.051 T ) Free Layer: -0.027 T ~ 0.036 T Hc = 31.5 mT SAF: 0.051 T ~ 0.08 T Hc = 14.5 mT

  45. L24: 60 x 120 E Free: Hc = 27.5 mT SAF: Hc= 0.5 mT ( -0.021 T , 0.036 T ) ( 0.052T , 0.053T )

  46. O27: 60 x 180 E Rmin : 383 Ω Rmax :809 Ω Magneto-Resistance : 111 % AP Region : Red: ( 0.014 T , 0.06 T ) Blue: ( -0.024 T , 0.045 T ) Free Layer: -0.024 T ~ 0.014 T Hc = 19 mT SAF: 0.045 T ~ 0.06 T Hc = 7.5 mT

  47. O27: 60 x 180 E Free: Hc = 3.5 mT SAF: Hc= 1 mT ( 0.006 T , 0.036 T ) ( 0.045T , 0.047T )

  48. O30: 60 x 180 E Rmin : 444 Ω Rmax :860 Ω Magneto-Resistance : 94% AP Region : Red: ( -0.042 T , 0.038 T ) Blue: ( -0.041 T , 0.017 T ) Free Layer: -0.042 T ~ -0.041 T Hc = -0.5 mT SAF: 0.017 T ~ 0.038 T Hc = 10.5 mT Do not fit the model

  49. O30: 60 x 180 E Free: Hc = 3.5 mT SAF: Hc= 9 mT ( -0.049 T , -0.042 T ) ( 0.017T , 0.028T )

  50. P26: 60 x 180 H Rmin : 388 Ω Rmax :809 Ω Magneto-Resistance : 109% AP Region : Red: ( 0.013 T , 0.044 T ) Blue: ( -0.021 T , 0.038 T ) Free Layer: -0.021 T ~ -0.013 T Hc = 17mT SAF: 0.038 T ~ 0.044 T Hc = 3mT

More Related