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The European Physical Journal D

, Volume 43, Issue 1–3, pp 267–270 | Cite as

Electronic properties of arrayed K clusters in zeolite LTA with Si/Al = 1.5

  • T. KodairaEmail author
  • S. Inoue
  • Y. Murakami
Magnetism

Abstract.

Arrayed cationic K clusters including one 4s-electron in each cluster, i.e., Km+1 m+, were incorporated into α-cages of zeolite LTA with Si/Al=1.5. Although no magnetic phase transition was observed regarding the temperature (T) dependence of magnetic susceptibilities originating from the 4s-electron spins (χspin) between 2 and 300 K, the χspin-T curve could be fitted by the sum of magnetic susceptibilities based on the Curie-Weiss law and Pauli paramagnetism. A possible explanation of this behavior is the existence of a narrow energy band formed out of 1s-cluster orbitals of arrayed K clusters, and the existence of a finite density of state at the Fermi energy.

PACS.

82.75.Vx Clusters in zeolites 73.22-.f Electronic structure of nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals 

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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2007

Authors and Affiliations

  1. 1.National Institute of Advanced Industrial Science and Technology (AIST)IbarakiJapan
  2. 2.PRESTO, Japan Science and Technology Corporation (JST)Kawaguchi City SaitamaJapan

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