Effect of space charge on micro-macro domain transition of PLZT

Cheng, Z.-Y.; Zhang, Liangying; Yao, Xi

doi:10.1109/14.155796

Cited by 23 publications

(7 citation statements)

References 4 publications

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“…A layer of Pt/Ti bottom electrode was evaporated on p-type silicon substrate with a resistivity of [5][6][7][8][9] cm. Then a layer of PbZr 0.5 Ti 0.48 O 3 (PZT) film was fabricated on the bottom electrode by the PLD technique.…”

Section: Methodsmentioning

confidence: 99%

“…From the electric point of view, it can be considered as an insulator because of its large bandgap (3.5 eV), especially as a pure dielectric in its bulk domain. Charge carriers (defects, charged particles etc) in domains move and separate under a dc field making the effective field on microdomains and polar microregions smaller than the applied field [9]. This process is called polarization.…”

Section: Radiation Theory For Pzt Filmmentioning

confidence: 99%

“…As a polycrystalline material, PZT film contains a large quantity of small crystalline grains, so they would exhibit a large number of traps in unit areas of film [3]. At room temperature, the trapped charges will result in redistribution of space charges in the sample and increase the effective field of neighbouring microdomains [9].…”

Section: Radiation Theory For Pzt Filmmentioning

confidence: 99%

“…Under the bias of an external electric field, these charges will redistribute and move to domain interfaces [9]; finally, they will be captured by defects of the interfaces and form parasitic dipoles whose direction is opposite to that of the external field, and aligned with that of spontaneous polarization. This means that the parasitic dipoles can result in the increasing of remanent polarization.…”

Section: Changes Of Hysteresis Loop During Irradiationmentioning

confidence: 99%

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Myocardial Strain Imaging Based on Two-Dimensional Displacement Vector Measurement

Nitta

Shiina

2004

Jpn. J. Appl. Phys.

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In order to study total dose radiation effects of PbZr x Ti 1−x O 3 (PZT) film made with the pulsed excimer laser deposition (PLD) technique, hysteresis loops and capacitance-voltage (C-V ) curves of PZT film capacitors have been measured before and after γ -ray irradiation. The results show that, in a range of 0-2 × 10 5 Gy (Si), with increasing total dose, the remanent polarization 2P r increased while dielectric constant ε decreased. This can be explained by charges trapped by some defects during irradiation.

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Section: Methodsmentioning

confidence: 99%

Section: Radiation Theory For Pzt Filmmentioning

confidence: 99%

Section: Radiation Theory For Pzt Filmmentioning

confidence: 99%

Section: Changes Of Hysteresis Loop During Irradiationmentioning

confidence: 99%

See 2 more Smart Citations

Myocardial Strain Imaging Based on Two-Dimensional Displacement Vector Measurement

Nitta

Shiina

2004

Jpn. J. Appl. Phys.

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show abstract

“…One is that a large quantity of space charges would be generated in an FE film during irradiation [3,7]. Under the bias of an external electric field, these charges will redistribute and move to domain interfaces [9]; finally, they will be captured by defects of the interfaces and form parasitic dipoles whose direction is opposite to that of the external field, and aligned with that of spontaneous polarization. This means that the parasitic dipoles can result in the increasing of remanent polarization.…”

Section: Changes Of Hysteresis Loop During Irradiationmentioning

confidence: 99%