Structural, magnetic, and ferroelectric properties of T-like cobalt-doped BiFeO 3 thin films

T. Young, P. Sharma, D. H. Kim, Thai Duy Ha, Jenh-Yih Juang, Ying-hao Chu, J. Seidel, V. Nagarajan, S. Yasui*, M. Itoh, D. Sando

*此作品的通信作者

研究成果: Article同行評審

15 引文 斯高帕斯(Scopus)

摘要

We present a comprehensive study of the physical properties of epitaxial cobalt-doped BiFeO3 films ∼50 nm thick grown on (001) LaAlO3 substrates. X-ray diffraction and magnetic characterization demonstrate high quality purely tetragonal-like (T′) phase films with no parasitic impurities. Remarkably, the step-and-terrace film surface morphology can be fully recovered following a local electric-field-induced rhombohedral-like to T′ phase transformation. Local switching spectroscopy experiments confirm the ferroelectric switching to follow previously reported transition pathways. Critically, we show unequivocal evidence for conduction at domain walls between polarization variants in T′-like BFO, making this material system an attractive candidate for domain wall-based nanoelectronics.

原文English
文章編號026102
期刊APL Materials
6
發行號2
DOIs
出版狀態Published - 1 2月 2018

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