Magnetic measurements Alkali metals Zeolites Clusters Metal-insulator transition Ferromagnetic properties
The Surface Science Society of Japan
Optical and magnetic properties are studied on Rb and Cs clusters incorporated into the
cages of aluminosilicate zeolite A (structure type code LTA), where α and β cages with
inside diameters of∼ 1.1 and∼ 0.7 nm, respectively, are arrayed in a simple cubic structure.
The average number of guest alkali atoms per α cage, n, was changed from dilute loading
to∼ 5 and∼ 3.5 for Rb and Cs, respectively. At n> 2, the absorption coefficient at mid-
infrared region increases significantly. This is assigned to a contribution of the Drude term ...