Structures and magnetic susceptibility of Ni-ion-introduced zeolite A and X

Ni-ion-introduced zeolite A (Ni-A) and X (Ni-X) were synthesized by the ion-exchange method, and their magnetic properties and crystal structures were investigated. Temperature dependence of magnetic susceptibility for Ni-A and Ni-X showed the presence of magnetic interaction and spin-glass behavior at low temperatures. The results of Rietveld analysis using powder X-ray diffraction patterns show that Ni ions are located at Na ion positions, with slightly different coordinates.