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Sputtered ferroelectric thin films for dynamic random access memory applications

 

作者: Jack Lee,   Vinay Chikarmane,   Chandra Sudhama,   Jiyoung Kim,  

 

期刊: Integrated Ferroelectrics  (Taylor Available online 1993)
卷期: Volume 3, issue 2  

页码: 113-120

 

ISSN:1058-4587

 

年代: 1993

 

DOI:10.1080/10584589308216705

 

出版商: Taylor & Francis Group

 

关键词: ferroelectrics;DRAM;thin dielectrics

 

数据来源: Taylor

 

摘要:

A low thermal budget (with 550°C annealing) process with Ti-compensation for sputtered ferroelectric PZT thin films has been developed. PZT films with a composition near the morphotrophic phase boundary (Zr/Ti = 53/47) annealed at 550°C for 1 hr in a N2ambient exhibits high charge storage density and low leakage current density, which are the important requirements of dielectric materials for ULSI DRAM cells. It was also found that Ti compensated films show good fatigue endurance in comparison with non-Ti compensated films.

 

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