For more detail, the reader
is referred to Saeseaw et.al., 2009. This
change in the lattice may be seen in
the broadening of the primary Raman
band of spinel (from approximately
6.8 – 10.6 wavenumbers in unheated
spinel to more than 30 wavenumbers
in heated spinel), as well as a
significant modification in the band
structure of chromium emission