FERROMAGNETISM OF ALKALI-METAL CLUSTERS INCORPORATED IN THE PERIODIC SPACE OF ZEOLITE LTA

Y. Nozue, T. Kodaira, S. Ohwashi, N. Togashi and O. Terasaki
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Y. Nozue: Department of Physics, Faculty of Science, Tohoku University, Sendai 980–77, Japan
T. Kodaira: National Institute of Advanced Interdisciplinary Research (NAIR), 1–1–4 Higashi, Tsukuba, Ibaraki 305, Japan
S. Ohwashi: Department of Physics, Faculty of Science, Tohoku University, Sendai 980–77, Japan
N. Togashi: Department of Physics, Faculty of Science, Tohoku University, Sendai 980–77, Japan
O. Terasaki: Department of Physics, Faculty of Science, Tohoku University, Sendai 980–77, Japan

Surface Review and Letters (SRL), 1996, vol. 03, issue 01, 701-706

Abstract: Magnetic properties are reported for rubidium and potassium clusters arrayed in a simple-cubic structure in zeolite LTA crystal. A ferromagnetism is observed, although no magnetic element is contained there. The result clearly indicates the intercluster interaction. The ferromagnetic properties vary depending on the average number of ns electrons of cluster. Optical properties reveal quantum electronic levels of cluster. The ferromagnetism is interpreted qualitatively in terms of the itinerant electron model based on the quantum levels of cluster. The magnetic properties of various clusters observed in zeolites are discussed from the microscopic point of view.

Date: 1996
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DOI: 10.1142/S0218625X96001261

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