Domain configuration changes under electric field-induced antiferroelectric-ferroelectric phase transitions in NaNbO{sub 3}-based ceramics

Journal Article · Fri Aug 07 04:00:00 EDT 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4928153· OSTI ID:22494693

Guo, Hanzheng; Randall, Clive A. ^[1]; Shimizu, Hiroyuki; Mizuno, Youichi ^[2]

---

1. Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802 (United States)
2. Taiyo Yuden Co., Ltd., Takasaki, Gunma 370-3347 (Japan)

We recently developed a feasible crystal chemistry strategy to stabilize the antiferroelectricity in NaNbO{sub 3} through a chemical substitution to decrease the tolerance factor and increase the average electronegativity of the system [Shimizu et al., Dalton Trans. 44, 10763 (2015) and Guo et al., J. Appl. Phys. 117, 214103 (2015)]. Two novel lead-free antiferroelectric (AFE) solid solutions, (1-x)NaNbO{sub 3}-xCaZrO{sub 3} and (1-x)NaNbO{sub 3}-xSrZrO{sub 3}, have been found to exhibit the double polarization hysteresis typical of a reversible AFE ↔ ferroelectric (FE) phase transition. In this study, as demonstrated by (1-x)NaNbO{sub 3}-xCaZrO{sub 3} system, the influence of chemical modification and electrical poling on the AFE/FE phase stability was investigated, primarily focusing on the microstructural and crystallographic evolutions. Together with the macroscopic polarization hysteresis measurements, a well-demonstrated structure-property relationship was presented. It was found that the CaZrO{sub 3} substitution into NaNbO{sub 3} can effectively destabilize the FE Q phase and correspondingly lead to a spontaneous reverting to AFE P phase. In contrast to the reversible AFE ↔ FE phase transition, the domain morphology evolution exhibits irreversible nature with a growing process of the orientational domains after applying electric field. Moreover, a multiple-zone axes electron diffraction map of P and Q phases has been summarized and is believed to be an efficient diagram to determine the AFE/FE nature of the NaNbO{sub 3}-based systems.

• OSTI ID: 22494693
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 5 Vol. 118; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANTIFERROELECTRIC MATERIALS
CERAMICS
CHEMISTRY
CRYSTALLOGRAPHY
ELECTRIC FIELDS
ELECTRON DIFFRACTION
ELECTRONEGATIVITY
FERROELECTRIC MATERIALS
HYSTERESIS
LEAD
MICROSTRUCTURE
MORPHOLOGY
NIOBATES
PHASE STABILITY
PHASE TRANSFORMATIONS
POLARIZATION
SODIUM COMPOUNDS
SOLID SOLUTIONS