Improved thermal stability of ferro/piezo-electric properties of Mn-doped Pb(In1/2Nb1/2)O3-PbTiO3 ceramics. Issue 9 (August 2018)

• Record Type: Journal Article
• Authors: Qiao, Huimin; He, Chao; Wang, Zujian; Li, Xiuzhi; Liu, Ying; Long, Xifa
• Is Part Of: Journal of the European Ceramic Society. Volume 38:Issue 9(2018)
• Page Start: 3162
• Page End: 3169
• Publication Date: 2018-08
• Subjects: Ferroelectrics -- Defect dipole -- Thermal stability -- Piezoelectric aging -- Domain; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2018.02.040
• Languages: English
• ISSNs: 0955-2219

Abstract

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(In1/2 Nb1/2 )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 ( x ≥ 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.