Ferromagnetism, antiferromagnetism and paramagnetism in vanadium phosphates prepared from hydrothermal conditions

Young Sook Lee, Jon A Zubieta, Robert Haushalter, Charles J. O'Connor

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Abstract

Several metal phosphate solids have been prepared from hydrothermal reaction methods that involve vanadium and either alkali metal ions or organic amine templating agents. A variety of magnetic behavior is observed, depending on the structures of the solids that are isolated. Binuclear [(VO)2Cl2(H2O)2(PhAsO3H)2Ph4 PCl], trinuclear [(C2H5NH3)2(VO)3H2O- (C2H5PO3)6], hexanuclear [(C2H5)4N2(VO)6(H2O)2 (C2H5PO3)6], 16-atom cluster [V16O20(OCH2CCH2O)8(H2O)4] and polymeric [AVOPO4, A= Na, NH3] materials have been prepared. Some materials exhibit long range antiferromagnetic phase transitions that result from strong lattice interactions between magnetic centers. Ferromagnetic behavior is also observed in [H3N(CH2)3NH3(VO)3(OH)2 (H2O)2(PO4)2] with a ferromagnetic phase transition at TC=5K. The magnetic data are interpreted in terms of the molecular and crystallographic data.

Original languageEnglish (US)
Pages (from-to)79-88
Number of pages10
JournalMolecular Crystals and Liquid Crystals Science and Technology, Section A: Molecular Crystals and Liquid Crystals
Volume273-274
Issue numberpt 3
StatePublished - 1995

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ASJC Scopus subject areas

  • Condensed Matter Physics

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