Piezoresponse Force Microscopy Study of Ferroelectric BaTiO3 Thin Film Directly Deposited on Si(001) by Magnetron Sputtering

Author:

Lu Hong Liang1,Song Shuang Qi1,Gu Xiao Feng2,He Shu Li3,Chen Chong Lin4,Song Gang Bing1,Cai Zhong Hou5,Guo Hai Ming6,Gao Hong Jun6,Sun Li1

Affiliation:

1. University of Houston

2. Jiangnan University

3. Capital Normal University

4. University of Texas at San Antonio

5. Argonne National Laboratory

6. Chinese Academy of Sciences

Abstract

Direct integration of ferroelectrics with semiconductors is critical to lower the cost and simplify the production procedures for data storage/processing components and miniature sensor/actuator development. By optimizing magnetron sputtering parameters, highly <001> preferential growth of BaTiO3 thin films with reproducible ferroelectric responses have been achieved on Si (001) substrates. The thin film ferroelectric characteristics were systematically studied by piezoresponse force microscopy, and a piezoelectric coefficient d33 of 24pm/V has been measured. It is found that the scanning tip sidewall angle and cantilever tilt affect the contour and size of polarized area.

Publisher

Trans Tech Publications, Ltd.

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