LIU, Hairui; VEBER, Philippe; KORUZA, Jurij; RYTZ, Daniel; JOSSE, Michaël; RÖDEL, Jürgen; MAGLIONE, Mario

doi:10.1039/C5CE02581H

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LIU, Hairui
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Institute of Materials Science

VEBER, Philippe
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

KORUZA, Jurij
Institute of Materials Science

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CrystEngComm. 2016, vol. 18, n° 12, p. 2081-2088

Royal Society of Chemistry

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A series of centimeter-sized lead-free piezoelectric Li+- and Ta5+-modified (Na,K)NbO3 single crystals with an ABO3 perovskite structure was successfully grown by the top-seeded solution growth method. Effective segregation of the elements was considered in order to further develop the growth of Li+- and Ta5+-modified (Na,K)NbO3 single crystals. The crystallographic structure and electrical behaviour along the [001]PC orientation were studied. X-ray diffraction, Raman spectroscopy and dielectric studies reveal that the increase in Ta5+ content reduces the orthorhombic–tetragonal phase transition. Bipolar and unipolar strain curves were investigated at 2 kV mm−1. The highest bipolar and unipolar strains associated with a large-signal piezoelectric constant of 368 pm V−1 were achieved for Li0.02Na0.626K0.354Nb0.808Ta0.192O3...< Réduire

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Influence of Ta5+ content on the crystallographic structure and electrical properties of [001]PC-oriented (Li,Na,K)(Nb,Ta)O3 single crystals

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