PZT THIN-FILM PREPARATION ON PT-TI ELECTRODE BY RF-SPUTTERING

被引:76
作者
ABE, K
TOMITA, H
TOYODA, H
IMAI, M
YOKOTE, Y
机构
[1] Metals and Ceramics Laboratory, Toshiba R & D Center, Toshiba Corporation, Saiwai-ku Kawasaki, 210, Komukai-Toshiba-cho
来源
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1991年 / 30卷 / 9B期
关键词
PZT; FERROELECTRIC THIN FILM; PT-TI ALLOY; LOWER ELECTRODE FILM;
D O I
10.1143/JJAP.30.2152
中图分类号
O59 [应用物理学];
学科分类号
摘要
Pt-Ti alloy film were studied for use as a lower electrode of the ferroelectric lead zirconate titanate (PZT) thin film capacitor. Pt-Ti alloy films with different Ti/Pt atomic ratios were first prepared by rf sputtering. Subsequently, PZT thin films were deposited also by rf magnetron sputtering on the Pt-Ti alloy metals. The Ti/Pt ratio in the alloy was found to strongly affect the crystal structure formation and the composition of the PZT thin films. The Ti/Pt ratio range from 0.02 to 0.17 was shown to bring about a preferable perovskite-type structure and a reproducible constant composition. The effect of Ti atoms in the Pt-Ti lower electrode was discussed in connection with the Pb atom evaporation rate.
引用
收藏
页码:2152 / 2154
页数:3
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