Electronic properties of La3Ni2O7 and Ln4Ni3O10, Ln=La, Pr and Nd

M. Greenblatt, Z. Zhang, M. H. Whangbo

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Abstract

Single-phase samples of La3Ni2O7-δ with δ=0, 0.08, 0.16 and 0.65, and Ln4Ni3O10, Ln=La, Pr and Nd were prepared and studied by powder X-ray diffraction, thermogravimetric analysis, electrical resistivity and magnetic susceptibility. The as prepared sample, La3Ni2O6.92 and the fully reduced La3Ni2O6.35 are semiconducting, while the oxygenated La3Ni2O7.0 is metallic. For Ln4Ni3O10-δ, when Ln = La, δ is zero and the material is metallic and Pauli paramagnetic; when Ln = Pr and Nd, δ is - 0.15 and an anomaly indicating a metal-to-metal transition is observed at 145 K for Pr4Ni3O10-δ, and 165 K for Nd4Ni3O10-δ. The electrical properties of the homologous series Lan+1NinO3n+1 with n=2,3 are discussed and compared in terms of the dimensionality of the crystal lattice and the electronic band structure calculated by the extended Hückel tight binding method.

Original languageEnglish (US)
Pages (from-to)1451-1452
Number of pages2
JournalSynthetic Metals
Volume85
Issue number1-3
DOIs
StatePublished - Mar 15 1997

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Keywords

  • Charge density waves
  • Low-dimensional properties
  • Magnetic and transport measurements
  • Metal-insulator transition

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