Transparent magnets are just one of the novel types of materials which
can be imagined when the properties of several materials are combined
cooperatively. Intercalation can provide an alternative to other meth
ods such as sol-gel techniques for the synthesis of hybrid organic-ino
rganic composites and also offers the advantage of better crystallinit
y. Recent progress in the combination of magnetic and nonlinear optica
l properties in layered materials is traced.