Crossref journal-article
Wiley
Journal of the American Ceramic Society (311)
Abstract

Improved performance by texturing has become attractive in the field of lead‐free ferroelectrics, but the effect depends heavily on the degree of texture, type of preferred orientation, and whether the material is a rotator or extender ferroelectric. Here, we report on successful texturing of K0.5Na0.5NbO3 (KNN) ceramics by alignment of needlelike KNN templates in a matrix of KNN powder using tape casting. Homotemplated grain growth of the needles was confirmed during sintering, resulting in a high degree of texture parallel to the tape casting direction (TCD) and the aligned needles. The texture significantly improved the piezoelectric response parallel to the tape cast direction, corresponding to the direction of the strongest <001>pc orientation, while the response normal to the tape cast plane was lower than for a nontextured KNN. In situ X‐ray diffraction during electric field application revealed that non‐180° domain reorientation was enhanced by an order of magnitude in the TCD, compared to the direction normal to the tape cast plane and in the nontextured ceramic. The effect of texture in KNN is discussed with respect to possible rotator ferroelectric properties of KNN.

Bibliography

Haugen, A. B., Olsen, G. H., Madaro, F., Morozov, M. I., Tutuncu, G., Jones, J. L., Grande, T., & Einarsrud, M. (2014). Piezoelectric K0.5Na0.5NbO3 Ceramics Textured Using Needlelike K0.5Na0.5NbO3 Templates. Journal of the American Ceramic Society, 97(12), 3818–3825. Portico.

Dates
Type When
Created 10 years, 11 months ago (Sept. 12, 2014, 3:48 a.m.)
Deposited 1 year, 11 months ago (Sept. 18, 2023, 2:02 a.m.)
Indexed 2 days, 19 hours ago (Sept. 3, 2025, 5:50 a.m.)
Issued 10 years, 11 months ago (Sept. 12, 2014)
Published 10 years, 11 months ago (Sept. 12, 2014)
Published Online 10 years, 11 months ago (Sept. 12, 2014)
Published Print 10 years, 9 months ago (Dec. 1, 2014)
Funders 4
  1. NTNU
  2. Research Council of Norway 10.13039/501100005416 Norges Forskningsråd

    Region: Europe

    gov (National government)

    Labels3
    1. Forskningsrådet
    2. Norwegian Research Council
    3. Research Council of Norway
    Awards1
    1. 197497/F20
  3. U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences
    Awards1
    1. DE-AC02-06CH11357
  4. U.S. Department of the Army
    Awards1
    1. W911NF-09-1-0435

@article{Haugen_2014, title={Piezoelectric <scp><scp>K</scp></scp>0.5<scp><scp>Na</scp></scp>0.5<scp><scp>NbO</scp></scp>3 Ceramics Textured Using Needlelike <scp><scp>K</scp></scp>0.5<scp><scp>Na</scp></scp>0.5<scp><scp>NbO</scp></scp>3 Templates}, volume={97}, ISSN={1551-2916}, url={http://dx.doi.org/10.1111/jace.13223}, DOI={10.1111/jace.13223}, number={12}, journal={Journal of the American Ceramic Society}, publisher={Wiley}, author={Haugen, Astri Bjørnetun and Olsen, Gerhard Henning and Madaro, Francesco and Morozov, Maxim I. and Tutuncu, Goknur and Jones, Jacob L. and Grande, Tor and Einarsrud, Mari‐Ann}, editor={Johnson, D.}, year={2014}, month=sep, pages={3818–3825} }