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Title: Atomic structural mechanism for ferroelectric-antiferroelectric transformation in perovskite NaNbO 3

Journal Article · · Physical Review. B

Sodium niobate (NaNbO3 or NN) is described as “the most complex perovskite system,” which exhibits transitions between, as well as coexistence of, several ferroelectrics (FE) and antiferroelectric (AFE) phases at different temperatures. Recently, solid solutions of NN with stabilized AFE phases(s) have gained attention for energy-related applications, such as high-density energy storage and electrocaloric cooling. A better understanding of the atomic mechanisms responsible for AFE/FE phase transitions in NaNbO3 can enable a more rational design of its solid-solution systems with tunable functional properties. In this work, we have investigated changes in the average and local atomic structure of NN using a combination of x-ray/neutron diffraction and neutron pair-distribution function (PDF) analyses. The Rietveld refinement of the x-ray/neutron-diffraction patterns indicates a coexistence of the FE Q (P21ma) and AFE P (Pbma) phases in the temperature range of 300 K ≤ T ≤ 615K, while PDF analysis indicated that the local structure (r < 8Å) is better described by a P21ma symmetry. Above 615 K, the average structure transitions to an AFE R phase (Pmmn or Pnma), while PDF analysis shows an increased disordering of the octahedral distortions and Na displacements at the local scale. These results indicate that the average P/Q/R phase transitions in NN can be described as a result of complex ordering of distorted octahedral tilts at the nanoscale and off-centered displacements of the Na atoms.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE; Swedish Research Council (SRC); Vinnova; Swedish Research Council (SRC) (Formas); NUFI Grant
Grant/Contract Number:
AC05-00OR22725; 2018–07152; 2018–04969; 2019–02496; 4059-00009B; IPTS-27376
OSTI ID:
1871099
Journal Information:
Physical Review. B, Vol. 105, Issue 17; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (44)

The fast azimuthal integration Python library: pyFAI journal March 2015
Local structure of NaNbO 3 : A neutron scattering study journal July 2013
Ferroelectric-relaxor crossover induce large electrocaloric effect with ultrawide temperature span in NaNbO 3 -based lead-free ceramics journal January 2021
POWGEN: rebuild of a third-generation powder diffractometer at the Spallation Neutron Source journal October 2019
Polymorphism in Micro-, Submicro-, and Nanocrystalline NaNbO 3 journal October 2005
Modulated phases in NaNbO 3 : Raman scattering, synchrotron x-ray diffraction, and dielectric investigations journal August 2005
Temperature-dependent Raman scattering studies in NaNbO3 ceramics journal January 2002
The structures of sodium niobate between 480° and 575°C, and their relevance to soft-phonon modes journal October 1972
The high-temperature phases of sodium niobate and the nature of transitions in pseudosymmetric structures journal May 1966
The low-temperature phase transition of sodium niobate and the structure of the low-temperature phase, N journal October 1973
Direct evidence of an incommensurate phase in NaNbO 3 and its implication in NaNbO 3 -based lead-free antiferroelectrics journal September 2015
The structure of sodium niobate at room temperature, and the problem of reliability in pseudosymmetric structures journal May 1969
Raman scattering investigations of the antiferroelectric-ferroelectric phase transition of NaNbO3 journal May 1998
On the lattice parameters of sodium niobate at room temperature and above journal June 1999
Rietveld refinement guidelines journal February 1999
High temperature Raman study of phase transitions in antiferroelectric NaNbO3 journal November 1996
The Nanoscale Ordered MAterials Diffractometer NOMAD at the Spallation Neutron Source SNS
  • Neuefeind, Jörg; Feygenson, Mikhail; Carruth, John
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 287 https://doi.org/10.1016/j.nimb.2012.05.037
journal September 2012
GSAS-II : the genesis of a modern open-source all purpose crystallography software package journal March 2013
Local stabilisation of polar order at charged antiphase boundaries in antiferroelectric (Bi 0.85 Nd 0.15 )(Ti 0.1 Fe 0.9 )O 3 journal August 2013
Lead-free antiferroelectric: xCaZrO 3 -(1 − x)NaNbO 3 system (0 ≤ x ≤ 0.10) journal January 2015
Large recoverable energy density with excellent thermal stability in Mn-modified NaNbO 3 -CaZrO 3 lead-free thin films journal March 2018
High-temperature phases of NaNbO 3 and NaTaO 3 journal February 1999
PDFfit2 and PDFgui: computer programs for studying nanostructure in crystals journal July 2007
A perovskite lead-free antiferroelectric xCaHfO 3 -(1-x) NaNbO 3 with induced double hysteresis loops at room temperature journal November 2016
The Polar Phase of NaNbO 3 : A Combined Study by Powder Diffraction, Solid-State NMR, and First-Principles Calculations journal June 2010
A New Series of Oxygen-Deficient Perovskites in the NaTi x Nb 1- x O 3-0.5 x System:  Synthesis, Crystal Chemistry, and Energetics journal May 2003
93Nb NMR and DFT investigation of the polymorphs of NaNbO3 journal January 2011
Study of the low-frequency Raman scattering in NaNbO 3 crystal journal February 2003
Realizing Stable Relaxor Antiferroelectric and Superior Energy Storage Properties in (Na 1-x/2 La x /2 )(Nb 1-x Ti x )O 3 Lead-Free Ceramics through A/B-Site Complex Substitution journal July 2020
Competing antiferroelectric and ferroelectric interactions in Na Nb O 3 : Neutron diffraction and theoretical studies journal July 2007
Third-order optical nonlinearity of a transparent glass ceramic containing sodium niobate nanocrystals journal April 2004
New Twists on the Perovskite Theme: Crystal Structures of the Elusive Phases R and S of NaNbO 3 journal June 2012
Lead-Free NaNbO 3 Nanowires for a High Output Piezoelectric Nanogenerator journal November 2011
Pressure-Induced Phase Transitions in Micro-, Submicro-, and Nanocrystalline NaNbO 3 journal June 2008
Ultrahigh Energy‐Storage Density in NaNbO 3 ‐Based Lead‐Free Relaxor Antiferroelectric Ceramics with Nanoscale Domains journal July 2019
An environmentally-benign NaNbO 3 based perovskite antiferroelectric alternative to traditional lead-based counterparts journal January 2019
The structure of sodium niobate (T 2 ) at 600°C, and the cubic-tetragonal transition in relation to soft-phonon modes journal May 1972
The seven phases of sodium niobate journal January 1974
A comparison of various commonly used correlation functions for describing total scattering journal April 2001
Studies of the lattice parameters and domains in the phase transitions of NaNbO 3 journal September 1973
Antiferroelectrics: History, fundamentals, crystal chemistry, crystal structures, size effects, and applications journal May 2021
Phase stability and structural temperature dependence in sodium niobate: A high-resolution powder neutron diffraction study journal April 2011
Atomically resolved domain boundary structure in lead zirconate-based antiferroelectrics journal September 2019
Synchrotron x-ray diffraction and Raman scattering investigations of ( Li x Na 1 x ) NbO 3 solid solutions: Evidence of the rhombohedral phase journal April 2004