X-Git-Url: https://hackdaworld.org/gitweb/?p=lectures%2Flatex.git;a=blobdiff_plain;f=posic%2Fthesis%2Fsic.tex;h=59d82c20283937a640ba017627a18a5159566c04;hp=2acb2c49fcd88e0491860caa87cbb8878a1cd570;hb=09bfc6387b330e7386bee91982a81dde1f2a39cb;hpb=acae415dbf7112ef565732ed9e9f820e2a2f694d diff --git a/posic/thesis/sic.tex b/posic/thesis/sic.tex index 2acb2c4..59d82c2 100644 --- a/posic/thesis/sic.tex +++ b/posic/thesis/sic.tex @@ -20,8 +20,8 @@ It is extremely rare and almost impossible to find in nature. SiC is a covalent material in which both, Si and C atoms are sp$^3$ hybridized. Each of the four sp$^3$ hybridized orbitals of a Si atom overlaps with one of the four sp$^3$ hybridized orbitals of the four surrounding C atoms and vice versa. -This results in fourfold coordinated covalent $\sigma$ bonds of equal length and strength for each atom with its neighbours. -Although the local order of Si and C next neighbour atoms characterized by the tetrahedral bonding is the same, more than 250 different types of structures called polytypes of SiC exist \cite{fischer90}. +This results in fourfold coordinated covalent $\sigma$ bonds of equal length and strength for each atom with its neighbors. +Although the local order of Si and C next neighbor atoms characterized by the tetrahedral bonding is the same, more than 250 different types of structures called polytypes of SiC exist \cite{fischer90}. The polytypes differ in the one-dimensional stacking sequence of identical, close-packed SiC bilayers. Each SiC bilayer can be situated in one of three possible positions (abbreviated a, b or c) with respect to the lattice while maintaining the tetrahedral bonding scheme of the crystal. \begin{figure}[t]