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

doi:10.1063/1.5011783

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

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.

Original language	English
Article number	026102
Journal	APL Materials
Volume	6
Issue number	2
DOIs	https://doi.org/10.1063/1.5011783
State	Published - 1 Feb 2018

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abstract = "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.",

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T1 - Structural, magnetic, and ferroelectric properties of T-like cobalt-doped BiFeO 3 thin films

AU - Young, T.

AU - Sharma, P.

AU - Kim, D. H.

AU - Ha, Thai Duy

AU - Juang, Jenh-Yih

AU - Chu, Ying-hao

AU - Seidel, J.

AU - Nagarajan, V.

AU - Yasui, S.

AU - Itoh, M.

AU - Sando, D.

PY - 2018/2/1

Y1 - 2018/2/1

N2 - 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.

AB - 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.

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DO - 10.1063/1.5011783

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JO - APL Materials

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

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