X-Git-Url: https://hackdaworld.org/gitweb/?p=lectures%2Flatex.git;a=blobdiff_plain;f=posic%2Ftalks%2Fdefense.tex;h=e0f334deb00ebf20bef389b22e56734e3739ebb6;hp=d41cff2b11d5c561eaf5aafe5503718fd8931aac;hb=bb741b8e0c861ccd0f8751734fa967691665de9a;hpb=17d5c879c418790a154098e51c524eca183c4d98 diff --git a/posic/talks/defense.tex b/posic/talks/defense.tex index d41cff2..e0f334d 100644 --- a/posic/talks/defense.tex +++ b/posic/talks/defense.tex @@ -966,7 +966,7 @@ $E_{\text{f}}=5.18\text{ eV}$\\ \scriptsize -\vspace{0.2cm} +\vspace{0.3cm} \begin{minipage}{6.8cm} \framebox{\hkl[0 0 -1] $\rightarrow$ \hkl[0 0 1]}\\ @@ -985,14 +985,14 @@ $\rightarrow$ \begin{minipage}{2.0cm} \includegraphics[width=2.0cm]{c_pd_vasp/100_next_2333.eps} \end{minipage}\\[0.1cm] -Spin polarization\\ -$\Rightarrow$ BC configuration constitutes local minimum\\ +Symmetry:\\ +$\Rightarrow$ Sufficient to consider \hkl[00-1] to BC transition\\ $\Rightarrow$ Migration barrier to reach BC | $\Delta E=\unit[1.2]{eV}$ \end{minipage} \begin{minipage}{5.4cm} \includegraphics[width=6.0cm]{im_00-1_nosym_sp_fullct_thesis_vasp_s.ps} %\end{minipage}\\[0.2cm] -\end{minipage}\\[0.3cm] +\end{minipage}\\[0.4cm] %\hrule % \begin{minipage}{6.8cm} @@ -1083,7 +1083,7 @@ Note: Change in orientation \headphd {\large\bf\boldmath - Defect combinations + Defect combinations --- ab inito } \footnotesize @@ -1708,8 +1708,7 @@ $\Rightarrow$ Phase transition consists of {\color{red}\underline{many}} {\bf Limitations related to the short range potential}\\[0.2cm] Cut-off function limits interaction to next neighbours\\ -$\Rightarrow$ Overestimated unphysical high forces of next neighbours - (factor: 2.4--3.4) +$\Rightarrow$ Overestimated diffusion barrier (factor: 2.4--3.4) \vspace{1.4cm} @@ -2013,7 +2012,7 @@ High C \& low T implants \item Low T $\rightarrow$ C-Si \hkl<1 0 0> dumbbell dominated structure \item High T $\rightarrow$ C$_{\text{sub}}$ dominated structure \item High T necessary to simulate IBS conditions (far from equilibrium) - \item Increased participation of \cs{} in the precipitation process + \item \cs{} involved in the precipitation process at elevated temperatures \item \si{}: vehicle to form \cs{} \& supply of Si \& stress compensation (stretched SiC, interface) \end{itemize} @@ -2022,7 +2021,7 @@ High C \& low T implants \begin{center} {\color{blue}\bf -\framebox{Precipitation by successive agglomeration of \cs{}} +\framebox{IBS: 3C-SiC precipitation occurs by successive agglomeration of \cs{}} } \end{center}