Magnetic properties of K-absorbing zeolite LTA.

The [sup 29]Si-NMR measurements on several samples of potassium loaded zeolite LTA (K[sub χ]/K[sub 12]-Al[sub 12]Si[sub 12]O[sub 48]), where χ (1≤χ≤7) is loaded potassium atoms per α-cage, were carried out. It was found that NMR line-shape at 4.2K significantly depends on the χ. These spectra were divided into different 3 types; diamagnetic phase for x≤2, magnetic ordered phase for 3≤χ≤5, and paramagnetic phase for x≥6. The magnetic phase diagram for K[sub χ]/K[sub 12]-LTA was determined by NMR. [ABSTRACT FROM AUTHOR]