Neutron irradiation effects on domain wall mobility and reversibility in lead zirconate titanate thin films

被引：31

作者：

Graham, Joseph T. ^{[1
,2
]}

Brennecka, Geoff L. ^{[2
]}

Ferreira, Paulo ^{[3
]}

Small, Leo ^{[2
,4
]}

Duquette, David ^{[4
]}

Apblett, Christopher ^{[5
]}

Landsberger, Sheldon ^{[1
]}

Ihlefeld, Jon F. ^{[2
]}

机构：

[1] Univ Texas Austin, Nucl Engn Teaching Lab, Austin, TX 78758 USA

[2] Sandia Natl Labs, Elect Opt & Nano Mat Dept, Albuquerque, NM 87185 USA

[3] Univ Texas Austin, Mat Sci & Engn Program, Austin, TX 78751 USA

[4] Rensselaer Polytech Inst, Dept Mat Sci & Engn, Troy, NY 12180 USA

[5] Sandia Natl Labs, Adv Power Sources R&D Dept, Albuquerque, NM 87185 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2013年 / 113卷 / 12期

关键词：

PZT-TYPE CERAMICS; PIEZOELECTRIC CERAMICS; DIELECTRIC PERMITTIVITY; FERROELECTRICS; NONLINEARITY;

D O I：

10.1063/1.4795869

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effects of neutron-induced damage on the ferroelectric properties of thin film lead zirconate titanate (PZT) were investigated. Two sets of PbZr0.52Ti0.48O3 films of varying initial quality were irradiated in a research nuclear reactor up to a maximum 1 MeV equivalent neutron fluence of (5.16 +/- 0.03) x 10(15)cm(-2). Changes in domain wall mobility and reversibility were characterized by polarization-electric field measurements, Rayleigh analysis, and analysis of first order reversal curves (FORC). With increasing fluence, extrinsic contributions to the small-signal permittivity diminished. Additionally, redistribution of irreversible hysterons towards higher coercive fields was observed accompanied by the formation of a secondary hysteron peak following exposure to high fluence levels. The changes are attributed to the radiation-induced formation of defect dipoles and other charged defects, which serve as effective domain wall pinning sites. Differences in damage accumulation rates with initial film quality were observed between the film sets suggesting a dominance of pre-irradiation microstructure on changes in macroscopic switching behavior. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4795869]

引用

页数：9

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