On the Magnetic Properties of Systems with Low Dimensional Linkage of VO<sub><b>5</b></sub>Pyramids

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  • Kanada Masaki
    Department of Physics, Division of Material Science, Nagoya University, Furo–cho, Chikusa–ku, Nagoya 464–8602
  • Harashina Hiroshi
    Department of Physics, Division of Material Science, Nagoya University, Furo–cho, Chikusa–ku, Nagoya 464–8602 CREST, Japan Science and Technology Corporation (JST)
  • Tanaka Shukichi
    Department of Physics, Saga University, Honjo–1, Saga–city, Saga 840–8502
  • Fukamachi Toshihiko
    Department of Physics, Division of Material Science, Nagoya University, Furo–cho, Chikusa–ku, Nagoya 464–8602
  • Kobayashi Yoshiaki
    Department of Physics, Division of Material Science, Nagoya University, Furo–cho, Chikusa–ku, Nagoya 464–8602 CREST, Japan Science and Technology Corporation (JST)
  • Sato Masatoshi
    Department of Physics, Division of Material Science, Nagoya University, Furo–cho, Chikusa–ku, Nagoya 464–8602 CREST, Japan Science and Technology Corporation (JST)

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  • On the Magnetic Properties of Systems with Low Dimensional Linkage of VO5 Pyramids.
  • On the Magnetic Properties of Systems w

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[N(CH3)4]V3O7, (en)2ZnV6O14 (en=ethylenediamine) and(C6H14N2)V6O14· H2O withedge-sharing VO5 chains have been prepared hydrothermally and studied bymagnetic susceptibility measurements and by NMR.Observed magnetic properties, which indicate the existence of the spin gap, can be explained by a model of isolated spin dimers of V4+ ions, where a very large exchange interaction J exists only betweenthe electrons at V sites within two edge-sharing VO5 pyramidswhose apical oxygens are on the same side of the basal planes.It can be understood by considering the kinetic exchange mechanism actingbetween the electrons in the xy orbitals.

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