Thermally activated rejuvenation of ferroelectric properties in electrically fatigued lead zirconate titanate ceramics

Conference · Fri May 01 04:00:00 EDT 1992

OSTI ID:10141216

Pan, W Y; Yue, C F; Lin, K W ^[1]; Tuttle, B A ^[2]

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1. New Mexico Inst. of Mining and Technology, Socorro, NM (United States). Dept. of Metallurgical and Materials Engineering
2. Sandia National Labs., Albuquerque, NM (United States)

Thermally activated rejuvenation of ferroelectric properties is investigated for modified lead zirconate titanate ferroelectric ceramics that have been electrically fatigued. The extent of rejuvenation for the ferroelectric polarization increases with both increasing temperature and increasing time of the post-fatigue thermal anneal. For an insufficient post-fatigue thermal anneal, the ferroelectric ceramic sample exhibits incomplete restoration of ferroelectric properties and an increased fatigue rate compared to the virgin sample. Complete rejuvenation of ferroelectric properties occurs when the fatigued ferroelectric ceramic is thermally annealed well above the ferroelectric-paraelectric phase transition temperature for many hours. The thermal rejuvenation of fatigue is explained by the thermally stimulated decoupling between the spontaneous polarization and either defects or space charge.

• Research Organization: Sandia National Labs., Albuquerque, NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 10141216
• Report Number(s): SAND--92-0864C; CONF-920445--1; ON: DE92012634
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204
ANNEALING
CERAMICS
ELECTRICAL PROPERTIES
FERROELECTRIC MATERIALS
LEAD COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
TITANATES
ZIRCONATES