In:
Journal of the American Ceramic Society, Wiley, Vol. 102, No. 8 ( 2019-08), p. 4874-4881
Abstract:
The doping of ZnO is efficient to improve the piezoelectric property and thermal stability of Pb(Mg 1/3 Nb 2/3 )O 3 –PbTiO 3 ( PMN – PT ) based ceramics. However, the underlying physics, especially the local domain structures of the ZnO modified PMN – PT ceramics, which is strongly associated with the electric properties, is not clear yet. In this paper, we investigated the local domain structures and their evolution as a function of x in PMN –0.32 PT : x ZnO ceramics. It was found that, the domain evolution is mainly caused by the growth of grain size induced by the sintering aiding effect of ZnO at x 〈 0.04, and the domain evolution can be attributed to the phase transition induced by the partial replacement of Mg 2+ by Zn 2+ in the B‐site of PMN – PT lattice at x 〉 0.06. Furthermore, we also investigated the domain structure evolution as functions of temperature and local external electric field in PMN –0.32 PT :0.06ZnO ceramics, which exhibited superior piezoelectric property relative to other compositions. We found that the irregular nanodomains are more stable at high‐temperature range, and the regular non‐180° domains exhibited more complex rotation behavior under local electric field, which probably leads to the thermal stability and piezoelectric property enhancement in the ZnO‐modified PMN –0.32 PT ceramics.
Type of Medium:
Online Resource
ISSN:
0002-7820
,
1551-2916
DOI:
10.1111/jace.2019.102.issue-8
Language:
English
Publisher:
Wiley
Publication Date:
2019
detail.hit.zdb_id:
2008170-4
detail.hit.zdb_id:
219232-9
Permalink