Export Matrix into Excel or Text

I have a matrix I've been trying to export to either excel or txt. I converted it from syms to char first because I would get error if i left it as syms. The output matrix is super long and starts as cos((theta*pi)/180)^2*(cos((theta*pi)/180)^2/(E11*(2*cos((theta*pi)/180). When I trid exporting it to excel, it was all placed in one cell and its a 3 x 3 matrix. How do i export it so it's all separated

Sbar = char(GlobalReducedCompliance(E11, E22, nu12, G12, theta));

writematrix(Sbar,'sbar.xlsx')

Answer 1

[Walter Roberson]

Sbar = cellfun(@char, GlobalReducedCompliance(E11, E22, nu12, G12, theta), 'uniform', 0);
writecell(Sbar, 'sbar.xlsx');