Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7898166 | Journal of the European Ceramic Society | 2018 | 34 Pages |
Abstract
Thermal stability of piezo-/ferro-electric properties of ferroelectrics is important for the devices working at elevated temperature. A study on thermal stability of ferroelectrics will be greatly helpful for future applications. In this work, thermal behaviors of electrical properties were studied in Mn-doped Pb(In1/2Nb1/2)O3-PbTiO3 (PINT) ceramics. The ferroelectric hysteresis loops of Mn-doped samples change anomalously with increasing temperature compared with the virgin sample. Remnant polarization of PINT ceramics with high manganese content (xâ¯â¥â¯0.04) exhibits increase trend as temperature increasing, leading to a negative electrocaloric effect which was reported to be beneficial to improving the cooling efficiency. For Mn-doped PINT ceramics, the reduction rate of coercive field reaches a relatively low value of 3%, indicating outstanding ability of depolarization resistance. PINT ceramics with proper dopant concentration show improved aging resistance and thermal stability of piezoelectric property after annealed. Out-of-plane domain configurations show different features at room temperature and elevated temperatures.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Huimin Qiao, Chao He, Zujian Wang, Xiuzhi Li, Ying Liu, Xifa Long,