Abstract
Publisher Summary This chapter presents crystal structure and magnetic properties of rubidium (Rb) clusters in zeolite LTA. The Rb metal-doped Rb-type LTA shows an interesting magnetic property whose magnetic susceptibility obeys the Curie–Weiss law with a negative Weiss temperature. Rb atoms can be loaded upto 5.4 atoms per α-cage. The crystal structure of the Rb loaded Rb-type LTA is determined using X-ray powder diffraction under ultrahigh vacuum conditions. By increasing the loaded density of the Rb cluster, arrangements of the Rb + ions in adjacent α-cages goes from equivalent to nonequivalent, and the local symmetry for framework is degraded from Oh to Td. The structural arrangement is clearly revealed by electron density distribution using the maximum entropy method. The magnetic property, which can be interpreted by the Dzialoshinsky–Moriya interaction, is strongly related to the noncentrosymmetric arrangement of the Rb clusters.
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