γ-ray total dose radiation effects of Pt/PbZr0.52Ti0.48/Pt and Au/PbTiO3/YBa2Cu3O7-δ ferroelectric capacitors

被引：10

作者：

Gao, JX ^{[1
]}

Zheng, LR ^{[1
]}

Zeng, JM ^{[1
]}

Lin, CL ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Met, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1998年 / 37卷 / 9B期

关键词：

ferroelectric; irradiation; remanent polarization; dielectric constant; coercive field;

D O I：

10.1143/JJAP.37.5126

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In order to investigate the total dose radiation effects of ferroelectric (FE) capacitors, Pt/PbZr0.52Ti0.48O3Pt (Pt/PZT/Pt) and Au/PbTiO3/YBa2Cu3O7-delta (YBCO) capacitors were fabricated by pulsed excimer laser deposition (PLD) on Si(100) and SrTiO3(001) substrates, respectively. The capacitance-voltage (C-V) curve and hysteresis loops properties of the capacitors were measured before and after gamma-ray irradiation. The results show that, with the increment of the total dose, the remanent polarization and the coercive field of the PZT capacitors did not decrease, but increased while the dielectric constant epsilon decreased; the degradation of the epsilon of the PbTiO3 capacitors is similar to that of the PZT capacitors, but the remanent polarization and the coercive field decreased gradually. The results have been interpreted by radiation-induced positive charges and the traps of defects theory.

引用

页码：5126 / 5127

页数：2

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