In:
Journal of Materials Chemistry C, Royal Society of Chemistry (RSC), Vol. 9, No. 46 ( 2021), p. 16741-16750
Abstract:
A Fe 2 O 3 –added 0.96(K 0.5 Na 0.5 )(Nb 0.94 Sb 0.06 )–0.01SrZrO 3 –0.03(BiAg)ZrO 3 [KNNS–0.01SZ–0.03BAZ] piezoceramic was well densified at 1090 °C. It exhibited a large piezoelectric charge constant ( d 33 ) of 650 pC/N, which is close to the largest d 33 value reported in the literature. This sample has a tetragonal–orthorhombic–rhombohedral (T–O–R) structure, in which each structure has a similar proportion. Moreover, nanodomains (2 nm × 15 nm) with a low domain boundary energy were found in this sample, which exhibited relaxor properties. Therefore, the presence of a T–O–R multi-structure and nanodomains is responsible for the large d 33 value of this sample. A KNNS–0.01SZ–0.03BAZ thick film was synthesized, and it also had a T–O–R multi-structure with a large d 33 (630 pC/N). A planar-type actuator was produced using this thick film, and this actuator exhibited large acceleration (335 G at 120 V mm −1 ) and displacement (231 μm at 120 V mm −1 ). Hence, the KNNS–0.01SZ–0.03BAZ thick film is a good candidate for lead-free piezoelectric actuators.
Type of Medium:
Online Resource
ISSN:
2050-7526
,
2050-7534
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2021
detail.hit.zdb_id:
2702245-6
Bookmarklink