-\includegraphics[width=15cm]{mit_ohne_diff.eps}
-\caption[Identical simulation cycles, with diffusion switched off (left) and on (right)]{} \label{5}
+\includegraphics[width=8cm]{mit_ohne_diff_e.eps}
+\caption[Identical simulation cycles with diffusion switched off (left) and on (right)]{} \label{5}
+\end{center}
+\end{figure}
+
+\begin{figure}[!h]
+\begin{center}
+\includegraphics[width=8cm]{high_low_ac-diff_e.eps}
+\caption[Identical simulation cycles with different diffusion rates]{} \label{6}
+\end{center}
+\end{figure}
+
+\begin{figure}[!h]
+\begin{center}
+\includegraphics[width=10cm]{all_z-z_plus_1.eps}
+\caption[Amorphous/crystalline and carbon distribution view of two successive layers]{} \label{7}