Table 1 TMR ratio and critical switching current of MTJ devices (sample1 ~ sample8) before radiation.

From: High-dose X-ray radiation induced MgO degradation and breakdown in spin transfer torque magnetic tunnel junctions

NO

TMR ratio

Ic (AP to P)

Ic (P to AP)

Sample1

170.8%

216 uA

−217 uA

Sample2

167.9%

203 uA

−214 uA

Sample3

159.5%

218 uA

−233 uA

Sample4

169.9%

223 uA

−243 uA

Sample5

179.1%

175 uA

−217 uA

Sample6

162.7%

229 uA

−226 uA

Sample7

174.5%

193 uA

−222 uA

Sample8

167.3%

212 uA

−216 uA

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