TY - JOUR
T1 - Aging-induced novel multi-scale effect in ferroelectrics and its underlying mechanism
AU - Zhang, Lixue
AU - Ren, Xiaobiang
PY - 2010/3
Y1 - 2010/3
N2 - Aging, the gradual changing of materials properties with time, is a well observed but puzzling phenomenon in ferroelectrics. It lowers the reliability of ferroelectric devices, and is thus usually undesirable. However, based on a defect mediated reversible domain switching mechanism, we obtained large recoverable electro-strain in aged BaTiO3-based ferroelectric crystals, which indicates aging is not always a detrimental effect; it might be beneficial for applications. Moreover, direct evidence for the reversible domain switching process was given by in situ polarizing microscope observation. The underlying microscopic origin was discussed in light of a symmetry-conforming short-range-order (SC-SRO) principle of point defects and electron paramagnetic resonance spectroscopy.
AB - Aging, the gradual changing of materials properties with time, is a well observed but puzzling phenomenon in ferroelectrics. It lowers the reliability of ferroelectric devices, and is thus usually undesirable. However, based on a defect mediated reversible domain switching mechanism, we obtained large recoverable electro-strain in aged BaTiO3-based ferroelectric crystals, which indicates aging is not always a detrimental effect; it might be beneficial for applications. Moreover, direct evidence for the reversible domain switching process was given by in situ polarizing microscope observation. The underlying microscopic origin was discussed in light of a symmetry-conforming short-range-order (SC-SRO) principle of point defects and electron paramagnetic resonance spectroscopy.
KW - Ferroelectric aging
KW - barium titanate
KW - electronic paramagnetic resonance
KW - point defects
KW - symmetry-conforming principle
UR - https://www.scopus.com/pages/publications/77958554003
U2 - 10.1142/S1793604710000890
DO - 10.1142/S1793604710000890
M3 - 文章
AN - SCOPUS:77958554003
SN - 1793-6047
VL - 3
SP - 69
EP - 77
JO - Functional Materials Letters
JF - Functional Materials Letters
IS - 1
ER -