Nanoscale Insight into Lead-Free BNT-BT-xKNN

Dittmer, Robert; Jo, Wook; Rödel, Jürgen; Kalinin, Sergei V

doi:10.1002/adfm.201200592

Title: Nanoscale Insight into Lead-Free BNT-BT-xKNN

Full Record
Other Related Research

Abstract

Piezoresponse force microscopy (PFM) is used to afford insight into the nanoscale electromechanical behavior of lead-free piezoceramics. Materials based on Bi{sub 1/2}Na{sub 1/2}TiO{sub 3} exhibit high strains mediated by a field-induced phase transition. Using the band excitation technique the initial domain morphology, the poling behavior, the switching behavior, and the time-dependent phase stability in the pseudo-ternary system (1-x)(0.94Bi{sub 1/2}Na{sub 1/2}TiO{sub 3}-0.06BaTiO{sub 3})-xK{sub 0.5}Na{sub 0.5}NbO{sub 3} (0 {le} x {ge} 18 mol%) are revealed. In the base material (x = 0 mol%), macroscopic domains and ferroelectric switching can be induced from the initial relaxor state with sufficiently high electric field, yielding large macroscopic remanent strain and polarization. The addition of KNN increases the threshold field required to induce long range order and decreases the stability thereof. For x = 3 mol% the field-induced domains relax completely, which is also reflected in zero macroscopic remanence. Eventually, no long range order can be induced for x {ge} 3 mol%. This PFM study provides a novel perspective on the interplay between macroscopic and nanoscopic material properties in bulk lead-free piezoceramics.

Authors:

Dittmer, Robert ^[1]; Jo, Wook ^[1]; Rödel, Jürgen ^[1]; Kalinin, Sergei V ^[2]

Technische Universitat Darmstadt, Germany
ORNL

Publication Date:: Sun Jan 01 00:00:00 EST 2012

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1043322

DOE Contract Number:: DE-AC05-00OR22725

Resource Type:: Journal Article

Journal Name:: Advanced Functional Materials

Additional Journal Information:: Journal Name: Advanced Functional Materials; Journal ID: ISSN 1616-301X

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; CERAMICS; ELECTRIC FIELDS; EXCITATION; LEAD; MICROSCOPY; MORPHOLOGY; PHASE STABILITY; PIEZOELECTRICITY; POLARIZATION; STABILITY; STRAINS

Citation Formats


                    Dittmer, Robert, Jo, Wook, Rödel, Jürgen, and Kalinin, Sergei V. Nanoscale Insight into Lead-Free BNT-BT-xKNN.  United States: N. p., 2012. 
        Web.  doi:10.1002/adfm.201200592.

Copy to clipboard


                    Dittmer, Robert, Jo, Wook, Rödel, Jürgen, & Kalinin, Sergei V. Nanoscale Insight into Lead-Free BNT-BT-xKNN.  United States.  https://doi.org/10.1002/adfm.201200592

Copy to clipboard


                    Dittmer, Robert, Jo, Wook, Rödel, Jürgen, and Kalinin, Sergei V. 2012.  
        "Nanoscale Insight into Lead-Free BNT-BT-xKNN".  United States.  https://doi.org/10.1002/adfm.201200592.

Copy to clipboard


                    
@article{osti_1043322,

  title        = {Nanoscale Insight into Lead-Free BNT-BT-xKNN},

  author       = {Dittmer, Robert and Jo, Wook and Rödel, Jürgen and Kalinin, Sergei V},

  abstractNote = {Piezoresponse force microscopy (PFM) is used to afford insight into the nanoscale electromechanical behavior of lead-free piezoceramics. Materials based on Bi{sub 1/2}Na{sub 1/2}TiO{sub 3} exhibit high strains mediated by a field-induced phase transition. Using the band excitation technique the initial domain morphology, the poling behavior, the switching behavior, and the time-dependent phase stability in the pseudo-ternary system (1-x)(0.94Bi{sub 1/2}Na{sub 1/2}TiO{sub 3}-0.06BaTiO{sub 3})-xK{sub 0.5}Na{sub 0.5}NbO{sub 3} (0 {le} x {ge} 18 mol%) are revealed. In the base material (x = 0 mol%), macroscopic domains and ferroelectric switching can be induced from the initial relaxor state with sufficiently high electric field, yielding large macroscopic remanent strain and polarization. The addition of KNN increases the threshold field required to induce long range order and decreases the stability thereof. For x = 3 mol% the field-induced domains relax completely, which is also reflected in zero macroscopic remanence. Eventually, no long range order can be induced for x {ge} 3 mol%. This PFM study provides a novel perspective on the interplay between macroscopic and nanoscopic material properties in bulk lead-free piezoceramics.},

  doi          = {10.1002/adfm.201200592},

  url          = {https://www.osti.gov/biblio/1043322},
  journal      = {Advanced Functional Materials},

  issn         = {1616-301X},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sun Jan 01 00:00:00 EST 2012},

  month        = {Sun Jan 01 00:00:00 EST 2012}

}

Copy to clipboard

Journal Article:

https://doi.org/10.1002/adfm.201200592

Other availability

Find in Google Scholar

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Ergodicity reflected in macroscopic and microscopic field-dependent behavior of BNT-based relaxors

Journal Article Dittmer, Robert; Jo, Wook; Rödel, Jürgen; ... - Journal of Applied Physics

The effect of heterovalent B-site doping on ergodicity of relaxor ferroelectrics is studied using (1 − y)(0.81Bi{sub 1/2}Na{sub 1/2}TiO{sub 3}-0.19Bi{sub 1/2}K{sub 1/2}TiO{sub 3})-yBiZn{sub 1/2}Ti{sub 1/2}O{sub 3} (BNT-BKT-BZT) with y = (0.02;0.03;0.04) as a model system. Both the large- and small-signal parameters are studied as a function of electric field. The crystal structure is assessed by means of neutron diffraction in the initial state and after exposure to a high electric field. In order to measure ferroelastic domain textures, diffraction patterns of the poled samples are collected as a function of sample rotation angle. Piezoresponse force microscopy (PFM) is employed to probe the microstructure formore »« less
https://doi.org/10.1063/1.4867157
Origin of the large strain response in (K{sub 0.5}Na{sub 0.5})NbO{sub 3}-modified (Bi{sub 0.5}Na{sub 0.5})TiO{sub 3}-BaTiO{sub 3} lead-free piezoceramics

Journal Article Jo, Wook; Granzow, Torsten; Aulbach, Emil; ... - Journal of Applied Physics

The mechanism of the giant unipolar strain recently observed in a lead-free piezoceramic, 0.92(Bi{sub 0.5}Na{sub 0.5})TiO{sub 3}-0.06BaTiO{sub 3}-0.02(K{sub 0.5}Na{sub 0.5})NbO{sub 3}[S.-T. Zhang, A. B. Kounga, E. Aulbach, H. Ehrenberg, and J. Roedel, Appl. Phys. Lett. 91, 112906 (2007) was investigated. The validity of the previously proposed mechanism that the high strain comes both from a significant volume change during the field-induced phase transition, from an antiferroelectric to a ferroelectric phase and the domain contribution from the induced ferroelectric phase was examined. Monitoring the volume changes from the simultaneously measured longitudinal and transverse strains on disk-shaped samples showed that the phasemore »« less
https://doi.org/10.1063/1.3121203
Mechanical confinement for improved energy storage density in BNT-BT-KNN lead-free ceramic capacitors

Journal Article Chauhan, Aditya; Patel, Satyanarayan; Vaish, Rahul - AIP Advances

With the advent of modern power electronics, embedded circuits and non-conventional energy harvesting, the need for high performance capacitors is bound to become indispensible. The current state-of-art employs ferroelectric ceramics and linear dielectrics for solid state capacitance. However, lead-free ferroelectric ceramics propose to offer significant improvement in the field of electrical energy storage owing to their high discharge efficiency and energy storage density. In this regards, the authors have investigated the effects of compressive stress as a means of improving the energy storage density of lead-free ferroelectric ceramics. The energy storage density of 0.91(Bi{sub 0.5}Na{sub 0.5})TiO{sub 3}-0.07BaTiO{sub 3}-0.02(K{sub 0.5}Na{sub 0.5})NbO{submore »« less
https://doi.org/10.1063/1.4892608
Semiconductor/relaxor 0–3 type composites without thermal depolarization in Bi_0.5Na_0.5TiO₃-based lead-free piezoceramics

Journal Article Zhang, Ji; Pan, Zhao; Guo, Fei-Fei; ... - Nature Communications

Commercial lead-based piezoelectric materials raised worldwide environmental concerns in the past decade. Bi_0.5Na_0.5TiO₃-based solid solution is among the most promising lead-free piezoelectric candidates; however, depolarization of these solid solutions is a longstanding obstacle for their practical applications. Here we use a strategy to defer the thermal depolarization, even render depolarization-free Bi_0.5Na_0.5TiO₃-based 0–3-type composites. This is achieved by introducing semiconducting ZnO particles into the relaxor ferroelectric 0.94Bi_0.5Na_0.5TiO₃–0.06BaTiO₃ matrix. The depolarization temperature increases with increasing ZnO concentration until depolarization disappears at 30 mol% ZnO. The semiconducting nature of ZnO provides charges to partially compensate the ferroelectric depolarization field. These results not onlymore »« less
https://doi.org/10.1038/ncomms7615
Electric-field-induced strain contributions in morphotropic phase boundary composition of (Bi{sub 1/2}Na{sub 1/2})TiO{sub 3}-BaTiO{sub 3} during poling

Journal Article Khansur, Neamul; Daniels, John; Hinterstein, Manuel; ... - Applied Physics Letters

The microscopic contributions to the electric-field-induced macroscopic strain in a morphotropic 0.93(Bi{sub 1/2}Na{sub 1/2}TiO{sub 3})−0.07(BaTiO{sub 3}) with a mixed rhombohedral and tetragonal structure have been quantified using full pattern Rietveld refinement of in situ high-energy x-ray diffraction data. The analysis methodology allows a quantification of all strain mechanisms for each phase in a morphotropic composition and is applicable to use in a wide variety of piezoelectric compositions. It is shown that during the poling of this material 24%, 44%, and 32% of the total macroscopic strain is generated from lattice strain, domain switching, and phase transformation strains, respectively. The resultsmore »« less
https://doi.org/10.1063/1.4937470

Similar Records