TU Darmstadt / ULB / TUbiblio

Temperature-dependent Evolution of Crystallographic and Domain Structures in (K,Na)NbO3-based Piezoelectric Single Crystals

Liu, H. and Veber, P. and Zintler, Alexander and Molina-Luna, Leopoldo and Rytz, Daniel and Maglione, Mario and Koruza, Jurij (2018):
Temperature-dependent Evolution of Crystallographic and Domain Structures in (K,Na)NbO3-based Piezoelectric Single Crystals.
In: IEEE Trans Ultrasonics Ferroelectr Freq Control, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA, pp. 1508-1516, 65, (9), DOI: 10.1109/TUFFC.2018.2844801,
[Article]

Abstract

(K,Na)NbO3-based ferroelectric single crystals have recently undergone a substantial development, resulting in improved crystal quality and large piezoelectric coefficients, exceeding 700 pC/N, over a broad temperature range. However, further development necessitates a detailed understanding of the mechanisms defining the domain structure and its temperature evolution. This paper presents the investigation into the crystallographic structure and domain configurations of a (K,Na,Li)(Ta,Nb)O-3 single crystal over a broad temperature range. The crystal was grown by the submerged-seed solution growth technique and investigated using in situ transmission electron microscopy, X-ray diffraction, dielectric measurements, and polarized light microscopy. The lattice distortion, structural phase transitions, and domain configurations are reported. A transition from the lamellar orthorhombic to the rectangular tetragonal domain structure is observed upon heating. Moreover, the milky optical appearance of the crystal was investigated and found to result from the presence of regions with different domain configurations and domain sizes. The formation of these regions is related to the growth defects, which govern the domain formation when cooling below the Curie temperature.

Item Type: Article
Erschienen: 2018
Creators: Liu, H. and Veber, P. and Zintler, Alexander and Molina-Luna, Leopoldo and Rytz, Daniel and Maglione, Mario and Koruza, Jurij
Title: Temperature-dependent Evolution of Crystallographic and Domain Structures in (K,Na)NbO3-based Piezoelectric Single Crystals
Language: English
Abstract:

(K,Na)NbO3-based ferroelectric single crystals have recently undergone a substantial development, resulting in improved crystal quality and large piezoelectric coefficients, exceeding 700 pC/N, over a broad temperature range. However, further development necessitates a detailed understanding of the mechanisms defining the domain structure and its temperature evolution. This paper presents the investigation into the crystallographic structure and domain configurations of a (K,Na,Li)(Ta,Nb)O-3 single crystal over a broad temperature range. The crystal was grown by the submerged-seed solution growth technique and investigated using in situ transmission electron microscopy, X-ray diffraction, dielectric measurements, and polarized light microscopy. The lattice distortion, structural phase transitions, and domain configurations are reported. A transition from the lamellar orthorhombic to the rectangular tetragonal domain structure is observed upon heating. Moreover, the milky optical appearance of the crystal was investigated and found to result from the presence of regions with different domain configurations and domain sizes. The formation of these regions is related to the growth defects, which govern the domain formation when cooling below the Curie temperature.

Journal or Publication Title: IEEE Trans Ultrasonics Ferroelectr Freq Control
Volume: 65
Number: 9
Publisher: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
Uncontrolled Keywords: Domains, ferroelectric, in situ transmission electron microscopy (TEM), lattice distortion, lead free, piezoelectric, (K,Na,Li)(Ta,Nb)O-3
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Advanced Electron Microscopy (aem)
Date Deposited: 06 Dec 2018 10:13
DOI: 10.1109/TUFFC.2018.2844801
Funders: This work was supported in part by Erasmus Mundus International Doctoral School IDS-FunMat under Project 2013-07 and in part by the German-French Doctoral School.
Export:
Suche nach Titel in: TUfind oder in Google

Optionen (nur für Redakteure)

View Item View Item