TY - JOUR
T1 - Enhanced unipolar fatigue resistance in ferroelectric Pb(Ni 1/3Nb2/3O3)-PbTiO3 ceramics prepared via glycerol-assisted solid-state reaction
AU - Ye, Yin
AU - Huang, Haitao
AU - Zhou, Li Min
AU - Mai, Yiu Wing
PY - 2011/2/1
Y1 - 2011/2/1
N2 - It is experimentally observed that PNN-PT ceramics processed with glycerol possess superior unipolar fatigue resistance; but the same ceramics processed without glycerol are vulnerable to unipolar fatigue. For PNN-PT-glycerol fatigued by 5 × 107 unipolar cycles, there are no losses in the maximum polarization (Pmax) and remnant polarization (P r). But for PNN-PT, these losses are ∼14% and 22%, respectively. In addition, strain asymmetryγS and internal bias field E bias of PNN-PT-glycerol are much less than those of PNN-PT. However, the ferroelectric properties can be recovered by bipolar cycles and thermal annealing; and such recovery is much easier and larger in PNN-PT-glycerol than in PNN-PT ceramics. Scanning electron microscopy micrographs show that the significant loss in properties of the fatigued PNN-PT ceramics is accompanied by a measurable number of severely damaged grains in the samples, especially in the region near the electrode surface, whereas the much less damaged grains in the PNN-PT-glycerol ceramics contribute to their good fatigue performance.
AB - It is experimentally observed that PNN-PT ceramics processed with glycerol possess superior unipolar fatigue resistance; but the same ceramics processed without glycerol are vulnerable to unipolar fatigue. For PNN-PT-glycerol fatigued by 5 × 107 unipolar cycles, there are no losses in the maximum polarization (Pmax) and remnant polarization (P r). But for PNN-PT, these losses are ∼14% and 22%, respectively. In addition, strain asymmetryγS and internal bias field E bias of PNN-PT-glycerol are much less than those of PNN-PT. However, the ferroelectric properties can be recovered by bipolar cycles and thermal annealing; and such recovery is much easier and larger in PNN-PT-glycerol than in PNN-PT ceramics. Scanning electron microscopy micrographs show that the significant loss in properties of the fatigued PNN-PT ceramics is accompanied by a measurable number of severely damaged grains in the samples, especially in the region near the electrode surface, whereas the much less damaged grains in the PNN-PT-glycerol ceramics contribute to their good fatigue performance.
UR - http://www.scopus.com/inward/record.url?scp=79751506813&partnerID=8YFLogxK
U2 - 10.1111/j.1551-2916.2010.04102.x
DO - 10.1111/j.1551-2916.2010.04102.x
M3 - Journal article
SN - 0002-7820
VL - 94
SP - 488
EP - 495
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
IS - 2
ER -