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Reason for TED: Implant Damage<br />

NEBM-DFT: Interstitial assisted two-step mechanism:<br />

Intrinsic diffusion:<br />

Create interstitial, B captures interstitial, diffuse together<br />

⇒ Diffusion barrier: E form (I) – E bind (BI) + E mig (BI)<br />

4 eV 1 eV 0.6 eV ~ 3.6 eV<br />

After implant:<br />

Interstitials for “free” ⇒ transient enhanced diffusion<br />

W. Windl, M.M. Bunea, R. Stumpf, S.T. Dunham, and M.P. Masquelier,<br />

Proc. MSM99 (Cambridge, MA, 1999), p. 369; MRS Proc. 568, 91 (1999); Phys. Rev. Lett. 83, 4345 (1999).<br />

Computational Materials Science and Engineering

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