Thus we have four anions (FCC) and four cations, which corresponds with the stoichiometry of the salt (1:1). occupying the tetrahedral holes. Remember that the tetrahedral holes are found between each ...

The general formula is AB 2 O 4. The oxygens form an fcc lattice. The A cations occupy tetrahedral holes, and the B cation occupy octahedral holes. It then follows that 1/8 of the tetrahedral holes ...

In the zinc blend structure the sulphur ions form an fcc structure and the zinc ions occupy half of the tetrahedral sites in this structure to attain charge neutrality. The crystal has a lattice ...

Diamond is one of the hardest materials known to man, but experts think it can be squashed into something even harder. The ...