Powder neutron diffraction studies of Na2Ti2Sb2O and its structure-property relationships

Tadashi C. Ozawa, Rigo Pantoja, Enos A. Axtell, Susan M. Kauzlarich, John E. Greedan, Mario Bieringer, James W. Richardson

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

The structure of Na2Ti2Sb2O has been investigated by temperature-dependent powder neutron diffraction. Na2Ti2Sb2O crystallizes in I4/mmm symmetry. The structure of this phase can be viewed as an anti-K2NiF4 type where Ti3+ ion is located between two oxygen atoms forming a square-planar lattice. Powder neutron diffraction studies of Na2Ti2Sb2O indicate that this compound has a structural distortion in the [Ti2Sb2O]2- layer at T ≃ 120 K. This transition corresponds well to the previously reported anomalous transition temperature of the magnetic susceptibility and electronic resistivity. Several models to explain the data are presented and discussed. (C) 2000 Academic Press.

Original languageEnglish (US)
Pages (from-to)275-281
Number of pages7
JournalJournal of Solid State Chemistry
Volume153
Issue number2
DOIs
StatePublished - 2000

Fingerprint

Neutron powder diffraction
neutron diffraction
Magnetic susceptibility
Superconducting transition temperature
oxygen atoms
transition temperature
Ions
Oxygen
magnetic permeability
Atoms
electrical resistivity
symmetry
electronics
ions
Temperature
temperature

Keywords

  • CDW
  • Layered oxide
  • Neutron diffraction
  • Pnictide-oxide
  • SDW

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Ozawa, T. C., Pantoja, R., Axtell, E. A., Kauzlarich, S. M., Greedan, J. E., Bieringer, M., & Richardson, J. W. (2000). Powder neutron diffraction studies of Na2Ti2Sb2O and its structure-property relationships. Journal of Solid State Chemistry, 153(2), 275-281. https://doi.org/10.1006/jssc.2000.8758

Powder neutron diffraction studies of Na2Ti2Sb2O and its structure-property relationships. / Ozawa, Tadashi C.; Pantoja, Rigo; Axtell, Enos A.; Kauzlarich, Susan M.; Greedan, John E.; Bieringer, Mario; Richardson, James W.

In: Journal of Solid State Chemistry, Vol. 153, No. 2, 2000, p. 275-281.

Research output: Contribution to journalArticle

Ozawa, TC, Pantoja, R, Axtell, EA, Kauzlarich, SM, Greedan, JE, Bieringer, M & Richardson, JW 2000, 'Powder neutron diffraction studies of Na2Ti2Sb2O and its structure-property relationships', Journal of Solid State Chemistry, vol. 153, no. 2, pp. 275-281. https://doi.org/10.1006/jssc.2000.8758
Ozawa, Tadashi C. ; Pantoja, Rigo ; Axtell, Enos A. ; Kauzlarich, Susan M. ; Greedan, John E. ; Bieringer, Mario ; Richardson, James W. / Powder neutron diffraction studies of Na2Ti2Sb2O and its structure-property relationships. In: Journal of Solid State Chemistry. 2000 ; Vol. 153, No. 2. pp. 275-281.
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AB - The structure of Na2Ti2Sb2O has been investigated by temperature-dependent powder neutron diffraction. Na2Ti2Sb2O crystallizes in I4/mmm symmetry. The structure of this phase can be viewed as an anti-K2NiF4 type where Ti3+ ion is located between two oxygen atoms forming a square-planar lattice. Powder neutron diffraction studies of Na2Ti2Sb2O indicate that this compound has a structural distortion in the [Ti2Sb2O]2- layer at T ≃ 120 K. This transition corresponds well to the previously reported anomalous transition temperature of the magnetic susceptibility and electronic resistivity. Several models to explain the data are presented and discussed. (C) 2000 Academic Press.

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