DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Multiscale structural analysis of polymorphic phase boundaries in doped antiferroelectric sodium niobate

Journal Article · · Physical Review. B

In the current work, we have performed multiscale structural analysis of a Pb-free sodium niobate-based smart system, i.e., 0.9⁢NaNbO3 –0.1⁢Ba0.9⁢Ca0.1⁢TiO3 (NN-10BCT) reported earlier for its high ferroelectric response. We have investigated the temperature-dependent evolution of crystal structure at long, medium, and short ranges using synchrotron x-ray diffraction (SXRD), Raman scattering, and pair distribution function(PDF) techniques in conjunction with dielectric studies. Temperature-dependent synchrotron x-ray diffraction data combined with dielectric analysis suggest two unique polymorphic phase boundaries (PPB) with two coexisting ferroelectric phases stable in the wide temperature ranges. These PPBs are stable in different regions viz. (i) cryogenic temperatures with coexisting R3c and Pmc⁢21 phases (ii) vicinity of room temperatures with coexisting Pmc⁢21 and Amm2 phases. In contrast to the conclusions drawn from SXRD, PDF reveals structures having lower symmetry (with coexisting Cc+ Pmc21 phases at 1.7 ≤r≤ 20 Å) at short ranges for these PPBs. In conclusion, the presence of different long- and short-range symmetries (accommodating tilt-oriented ferroelectric phases) in the unique polymorphic phase boundaries makes them thermally stable and advantageous for technological applications.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
Sponsoring Organization:
Defence Research and Development Organisation; Government of India; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
SC0012704
OSTI ID:
2549230
Report Number(s):
BNL--227969-2025-JAAM
Journal Information:
Physical Review. B, Journal Name: Physical Review. B Journal Issue: 5 Vol. 111; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (65)

High-pressure Raman spectroscopy of nano-structured ABO3 perovskites: a case study of relaxor ferroelectrics journal January 2003
Raman spectral studies of Zr 4+ -rich BaZr x Ti 1− x O 3 (0.5⩽ x ⩽1.00) phase diagram: Raman spectral studies of Zr 4+ -rich BaZr x Ti 1− x O 3 journal December 2008
Probing of structural phase transitions in barium titanate modified sodium niobate using Raman scattering journal May 2019
Study of ordered nano‐regions in Pb(Zn1/3Nb2/3)0.915Ti0.085O3 single crystal using Raman spectroscopy journal January 2003
Recent advances in magnetic structure determination by neutron powder diffraction journal October 1993
Phase coexistence region and dielectric properties of PZT ceramics journal March 2000
Phase coexistence near the polymorphic phase boundary journal February 2019
Structural evidence for the polymorphic phase boundary in (Na,K)NbO3 based perovskites close to the rhombohedral-tetragonal phase coexistence zone journal August 2020
Role of correlated disorder on structural stability and functional properties in Na,Ba(Nb,Ti)O3 journal June 2021
Local structures of perovskite dielectrics and ferroelectrics via pair distribution function analyses journal April 2018
Recent development in lead-free perovskite piezoelectric bulk materials journal October 2018
A Local Atomic Mechanism for Monoclinic-Tetragonal Phase Boundary Creation in Li-Doped Na0.5K0.5NbO3 Ferroelectric Solid Solution journal March 2022
Effect of Local Structural Distortions on Antiferroelectric–Ferroelectric Phase Transition in Dilute Solid Solutions of KxNa1–xNbO3 journal December 2022
Stability Trend of Tilted Perovskites journal June 2018
Potassium–Sodium Niobate Lead-Free Piezoelectric Materials: Past, Present, and Future of Phase Boundaries journal March 2015
The missing boundary in the phase diagram of PbZr1−xTixO3 journal October 2014
An overview of lead-free piezoelectric materials and devices journal January 2018
Boosted piezoelectricity with excellent thermal stability in tetragonal NaNbO 3 -based ceramics journal January 2021
Large piezoelectricity in NaNbO3-based lead-free ceramicsviatuning oxygen octahedral tilt journal January 2022
A monoclinic ferroelectric phase in the Pb(Zr1−xTix)O3 solid solution journal April 1999
Broken symmetry in low-temperature BaTiO3 phases: Strain effects probed by Raman scattering journal November 1999
Structure of Pb(Zr, Ti)O[sub 3] near the morphotropic phase boundary conference January 2001
Room temperature structure of Pb(ZrxTi1−xO3) around the morphotropic phase boundary region: A Rietveld study journal September 2002
A morphotropic phase boundary system based on polarization rotation and polarization extension journal August 2010
Structural and dielectric studies of Pb(Mg1/3Nb2/3)O3–PbTiO3 ferroelectric solid solutions around the morphotropic boundary journal January 1996
Polymorphic phase boundaries and enhanced piezoelectric response in extended composition range in the lead free ferroelectric BaTi 1−x Zr x O 3 journal July 2013
Monoclinic nanodomains in morphotropic phase boundary Pb(Mg 1/3 Nb 2/3 )O 3 –PbTiO 3 journal February 2014
Polymorphic structure evolution and large piezoelectric response of lead-free (Ba,Ca)(Zr,Ti)O 3 ceramics journal March 2014
Extrinsic response enhancement at the polymorphic phase boundary in piezoelectric materials journal April 2016
BaTiO 3 -based piezoelectrics: Fundamentals, current status, and perspectives journal December 2017
Evidence for existence of functional monoclinic phase in sodium niobate based solid solution by powder neutron diffraction journal April 2018
Polymorphic phase boundary in piezoelectric oxides journal April 2020
Unambiguous evidence of three coexisting ferroelectric phases in a lead-free LixNa1−xNbO3 system journal June 2020
Origin of zero thermal expansion in an average cubic structure in Pb-free relaxor ferroelectrics journal September 2024
Raman spectroscopy of Lithium modified Sodium Niobate at elevated temperature journal April 2017
Bilbao Crystallographic Server : Useful Databases and Tools for Phase-Transition Studies journal January 2003
Polymorphic phase transition and enhanced piezoelectric properties of LiTaO3-modified (Na0.52K0.48) (Nb0.93Sb0.07)O3lead-free ceramics journal December 2008
Study of polymorphic phase boundary in (Na,K,Li) (Nb,Ta,Sb)O3 piezoelectric ceramics journal January 2014
Structure and the location of the morphotropic phase boundary region in (1-x)[Pb(Mg1/3Nb2/3)O3]-xPbTiO3 journal November 2001
Modulated phases in NaNbO 3 : Raman scattering, synchrotron x-ray diffraction, and dielectric investigations journal August 2005
PDFfit2 and PDFgui: computer programs for studying nanostructure in crystals journal July 2007
Relaxor ferroelectricity driven by ‘A’ and ‘B’ site off-centered displacements in cubic phase with Pm 3‾ m space group journal June 2021
Similarities and differences in the ordering at short and long ranges in a NaNbO3 based Pb-free smart system: a key to functional properties journal May 2024
Progress in engineering high strain lead-free piezoelectric ceramics journal February 2010
Atomic structural mechanism for ferroelectric-antiferroelectric transformation in perovskite NaNbO3 journal May 2022
Evidence of distinct nonpolar/polar ordering at long/short ranges in relaxor ferroelectrics journal January 2025
Tetragonal-to-monoclinic phase transition in a ferroelectric perovskite: The structure of PbZr 0.52 Ti 0.48 O 3 journal April 2000
Monoclinic and triclinic phases in higher-order Devonshire theory journal January 2001
Monoclinic structure of unpoled morphotropic high piezoelectric PMN-PT and PZN-PT compounds journal January 2002
First-principles calculations of piezoelectricity and polarization rotation in Pb ( Zr 0.5 Ti 0.5 ) O 3 journal July 2003
Electric-field-dependent phase volume fractions and enhanced piezoelectricity near the polymorphic phase boundary of (K 0 . 5 Na 0 . 5 ) 1 − x Li x NbO 3 textured ceramics journal June 2011
Local atomic structure deviation from average structure of Na 0.5 Bi 0.5 TiO 3 : Combined x-ray and neutron total scattering study journal March 2013
Local structure of NaNbO 3 : A neutron scattering study journal July 2013
Large Piezoelectric Effect in Pb-Free Ceramics journal December 2009
Finite-Temperature Properties of Pb ( Zr 1 − x Ti x ) O 3 Alloys from First Principles journal June 2000
Direct Observation of the Formation of Polar Nanoregions in Pb ( Mg 1 / 3 Nb 2 / 3 ) O 3 Using Neutron Pair Distribution Function Analysis journal April 2005
Effect of chemical pressure on competition and cooperation between polar and antiferrodistortive distortions in sodium niobate journal December 2017
Simple ways of determining perovskite structures journal November 1975
The classification of tilted octahedra in perovskites journal November 1972
Stabilizing ferroelectricity in alkaline-earth-metal-based perovskites (ABO3) via A- (Ca2+/Sr2+/Ba2+) and B-site (Ti4+) cationic radius ratio (RA /RB ) journal October 2022
Piezoelectric Ceramics journal November 1958
Effect of Oxygen Octahedron Rotations on the Phase Stability, Transformational Characteristics, and Polarization Behavior in the Lead Zirconate Titanate Crystalline Solution Series journal October 1995
Perspective on the Development of Lead-free Piezoceramics journal June 2009
Raman scattering spectra of ceramics, films, and superlattices of ferroelectric perovskites: A review journal May 2012
Role of phonon mode in the enhancement of ferroelectric polarization in a perovskite-based eco-friendly functional material journal October 2022