Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Revisiting the structures and phase transitions of Ba2NaNb5O15

Journal Article · · Journal of Applied Crystallography (Online)
The room-temperature and low-temperature structure(s) of Ba2NaNb5O15 (BNN) have been debated since the structure was proposed in the 1960s. This work revisits the structures and phase transitions of BNN, combining high-resolution X-ray and neutron powder diffraction with density functional theory calculations. Temperature-dependent high-resolution X-ray powder diffraction patterns are collected from 4 to 918 K, and sequential batch Rietveld refinement using a symmetry mode approach to describe the structure is used to extract the main structural changes as a function of temperature. The data show that the average structure of BNN is best described by the Ama2 space group, and no other structural phase transitions were observed below the ferroelastic transition. The symmetry mode analysis, combining results from diffraction and density functional theory, shows significant octahedral tilting and corrugations of both the A1 and A2 sites along the c direction. A strong correlation between the spontaneous strain and the octahedral tilting was observed, and a potential connection with emerging microstructure at low temperatures is proposed, all enabled by the symmetry mode approach used in this work.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
Sponsoring Organization:
Deutsche Forschungsgemeinschaft; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
2471521
Journal Information:
Journal of Applied Crystallography (Online), Journal Name: Journal of Applied Crystallography (Online) Journal Issue: 5 Vol. 56; ISSN 1600-5767
Publisher:
International Union of CrystallographyCopyright Statement
Country of Publication:
United States
Language:
English

References (46)

A TEM study of the incommensurate phase and related phase transitions in barium sodium niobate journal November 1985
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set journal July 1996
Large structural modulations in the relaxor ferroelectric and intermediate state of strontium rich members (x>0.6) of the SrxBa1−xNb2O6 (sbn) solid solution series journal February 2017
A Crystal-Chemical Framework for Relaxor versus Normal Ferroelectric Behavior in Tetragonal Tungsten Bronzes journal April 2015
Structural Evolution of Ferroelectric and Ferroelastic Barium Sodium Niobate Tungsten Bronze journal June 2020
Cation Disorder in Ferroelectric Ba4M2Nb10O30 (M = Na, K, and Rb) Tetragonal Tungsten Bronzes journal September 2022
Multiferroic and magnetoelectric materials journal August 2006
Emerging spin–phonon coupling through cross-talk of two magnetic sublattices journal January 2022
Ferroelectric Tungsten Bronze‐Type Crystal Structures. II. Barium Sodium Niobate Ba (4 + x) Na (2 − 2x) Nb 10 O 30 journal May 1969
Low temperature behaviour of barium sodium niobate journal January 1978
Incommensurate phases in ferroelectric tetragonal tungsten bronzes journal October 1981
Studies of incommensurate barium sodium niobate journal April 1990
Direct optical observation of the 1q/2q transition in incommensurate Ba2NaNb5O15 journal January 1992
Low-temperature phase transitions in barium sodium niobate journal May 2007
X-ray structural determination of the quasi-commensurate phase of barium sodium niobate journal January 1990
Linear–quadratic order parameter coupling and multiferroic phase transitions journal November 2011
Optical and x-ray studies on the low-temperature phase transition of journal August 1996
Towards novel multiferroic and magnetoelectric materials: dipole stability in tetragonal tungsten bronzes
  • Rotaru, Andrei; Miller, Andrew J.; Arnold, Donna C.
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 372, Issue 2009 https://doi.org/10.1098/rsta.2012.0451
journal February 2014
Theory of the ferroelastic transition in barium sodium niobate journal August 1975
Incommensurate phases in barium sodium niobate journal January 1981
Transmission-electron-microscopy observation of the memory effect through the pattern of discommensurations in barium sodium niobate journal June 1987
Incommensurate phases in barium sodium niobate: Transmission-electron-microscopy study journal November 1988
Ab initiomolecular dynamics for liquid metals journal January 1993
Ab initio molecular-dynamics simulation of the liquid-metal–amorphous-semiconductor transition in germanium journal May 1994
Projector augmented-wave method journal December 1994
Memory effect, defect density wave, and related microdomain structure in an incommensurate phase of barium sodium niobate journal January 1995
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Low-temperature transition in barium sodium niobateBa2NaNb5O15 journal May 1997
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Restoring the Density-Gradient Expansion for Exchange in Solids and Surfaces journal April 2008
Generalized Gradient Approximation Made Simple journal October 1996
ISODISPLACE : a web-based tool for exploring structural distortions journal July 2006
VESTA 3 for three-dimensional visualization of crystal, volumetric and morphology data journal October 2011
Ferroelastic phase transitions: structure and microstructure journal December 2004
The superstructure determination of displacive distortions via symmetry-mode analysis journal January 2012
TOPAS and TOPAS-Academic : an optimization program integrating computer algebra and crystallographic objects written in C++ journal February 2018
POWGEN: rebuild of a third-generation powder diffractometer at the Spallation Neutron Source journal October 2019
ID22 – the high-resolution powder-diffraction beamline at ESRF journal July 2023
Incommensurate modulations of relaxor ferroelectric Ca0.24Ba0.76Nb2O6(CBN24) and Ca0.31Ba0.69Nb2O6(CBN31)
  • Graetsch, Heribert A.; Pandey, Chandra Shehkar; Schreuer, Jürgen
  • Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, Vol. 70, Issue 4 https://doi.org/10.1107/S2052520614011676
journal July 2014
Octahedral tilting in the tungsten bronzes
  • Whittle, Thomas A.; Schmid, Siegbert; Howard, Christopher J.
  • Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, Vol. 71, Issue 3 https://doi.org/10.1107/S2052520615008252
journal May 2015
Octahedral tilting in the tungsten bronzes. Addendum.
  • Whittle, Thomas A.; Schmid, Siegbert; Howard, Christopher J.
  • Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, Vol. 74, Issue 6 https://doi.org/10.1107/S2052520618015263
journal November 2018
Structures and phase transitions in barium sodium niobate tungsten bronze (BNN)
  • Whittle, Thomas A.; Howard, Christopher J.; Schmid, Siegbert
  • Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, Vol. 77, Issue 6 https://doi.org/10.1107/S2052520621010301
journal November 2021
Spontaneous strain as a determinant of thermodynamic properties for phase transitions in minerals [Spontaneous strain as a determinant of thermodynamic properties for phase transitions in minerals] journal July 1998
Domains and domain walls in multiferroics journal April 2020
Crystallographic Computing System JANA2006: General features journal January 2014
Ferroelastic phase transitions and domain structures in powders journal January 2005

Similar Records

Crystallization of tungstenbronze-type Ba{sub 2}NaNb{sub 5}O{sub 15} in high-Nb{sub 2}O{sub 5}-content glass: An inelastic light scattering study
Journal Article · Sun Nov 14 23:00:00 EST 2010 · Journal of Applied Physics · OSTI ID:21537933

Quadruple-layered perovskite (CuCl)Ca{sub 2}NaNb{sub 4}O{sub 13}
Journal Article · Sat Jan 14 23:00:00 EST 2012 · Journal of Solid State Chemistry · OSTI ID:21612843

Negative linear compressibility and complex phase behaviour in 7Li2CO3
Journal Article · Tue May 13 20:00:00 EDT 2025 · Journal of Materials Chemistry. A · OSTI ID:2575301