Abstract Alkali metal nanoclusters can be stabilized in the regular cages of zeolite crystals
by the loading of guest alkali metals. Cages are connected by the sharing of windows of the
framework, and arrayed in simple cubic, diamond and body centered cubic structures in
zeolites A, X and sodalite, respectively. The s-electrons have the localized nature of
nanoclusters with magnetic moments, and have mutual interactions through the windows of
cages. They show exotic magnetism depending on the structure type of zeolites, the kind ...