Nanodomain induced anomalous magnetic and electronic transport properties of LaBaCo2O5.5δ highly epitaxial thin films

F. Ruiz-Zepeda; C. Ma; D. Bahena Uribe; J. Cantu-Valle; H. Wang; Xing Xu; M. J. Yacaman; C. Chen; B. Lorenz; A. J. Jacobson; P. C.W. Chu; A. Ponce

doi:10.1063/1.4861406

Nanodomain induced anomalous magnetic and electronic transport properties of LaBaCo₂O_5.5δ highly epitaxial thin films

F. Ruiz-Zepeda, C. Ma, D. Bahena Uribe, J. Cantu-Valle, H. Wang, Xing Xu, M. J. Yacaman, C. Chen, B. Lorenz, A. J. Jacobson, P. C.W. Chu, A. Ponce

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Abstract

A giant magnetoresistance effect (∼46 at 20 K under 7 T) and anomalous magnetic properties were found in a highly epitaxial double perovskite LaBaCo₂O_5.5δ (LBCO) thin film on (001) MgO. Aberration-corrected Electron Microscopy and related analytical techniques were employed to understand the nature of these unusual physical properties. The as-grown film is epitaxial with the c-axis of the LBCO structure lying in the film plane and with an interface relationship given by (100)_LBCO || (001)_MgO and [001]_LBCO || [100]_MgO or [010]_MgO. Orderly oxygen vacancies were observed by line profile electron energy loss spectroscopy and by atomic resolution imaging. Especially, oxygen vacancy and nanodomain structures were found to have a crucial effect on the electronic transport and magnetic properties.

Original language	English (US)
Article number	024301
Journal	Journal of Applied Physics
Volume	115
Issue number	2
DOIs	https://doi.org/10.1063/1.4861406
State	Published - Jan 14 2014
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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Ruiz-Zepeda, F., Ma, C., Bahena Uribe, D., Cantu-Valle, J., Wang, H., Xu, X., Yacaman, M. J., Chen, C., Lorenz, B., Jacobson, A. J., Chu, P. C. W., & Ponce, A. (2014). Nanodomain induced anomalous magnetic and electronic transport properties of LaBaCo₂O_5.5δ highly epitaxial thin films. Journal of Applied Physics, 115(2), Article 024301. https://doi.org/10.1063/1.4861406

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title = "Nanodomain induced anomalous magnetic and electronic transport properties of LaBaCo2O5.5δ highly epitaxial thin films",

abstract = "A giant magnetoresistance effect (∼46 at 20 K under 7 T) and anomalous magnetic properties were found in a highly epitaxial double perovskite LaBaCo2O5.5δ (LBCO) thin film on (001) MgO. Aberration-corrected Electron Microscopy and related analytical techniques were employed to understand the nature of these unusual physical properties. The as-grown film is epitaxial with the c-axis of the LBCO structure lying in the film plane and with an interface relationship given by (100)LBCO || (001)MgO and [001]LBCO || [100]MgO or [010]MgO. Orderly oxygen vacancies were observed by line profile electron energy loss spectroscopy and by atomic resolution imaging. Especially, oxygen vacancy and nanodomain structures were found to have a crucial effect on the electronic transport and magnetic properties.",

author = "F. Ruiz-Zepeda and C. Ma and {Bahena Uribe}, D. and J. Cantu-Valle and H. Wang and Xing Xu and Yacaman, {M. J.} and C. Chen and B. Lorenz and Jacobson, {A. J.} and Chu, {P. C.W.} and A. Ponce",

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doi = "10.1063/1.4861406",

language = "English (US)",

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T1 - Nanodomain induced anomalous magnetic and electronic transport properties of LaBaCo2O5.5δ highly epitaxial thin films

AU - Ruiz-Zepeda, F.

AU - Ma, C.

AU - Bahena Uribe, D.

AU - Cantu-Valle, J.

AU - Wang, H.

AU - Xu, Xing

AU - Yacaman, M. J.

AU - Chen, C.

AU - Lorenz, B.

AU - Jacobson, A. J.

AU - Chu, P. C.W.

AU - Ponce, A.

PY - 2014/1/14

Y1 - 2014/1/14

N2 - A giant magnetoresistance effect (∼46 at 20 K under 7 T) and anomalous magnetic properties were found in a highly epitaxial double perovskite LaBaCo2O5.5δ (LBCO) thin film on (001) MgO. Aberration-corrected Electron Microscopy and related analytical techniques were employed to understand the nature of these unusual physical properties. The as-grown film is epitaxial with the c-axis of the LBCO structure lying in the film plane and with an interface relationship given by (100)LBCO || (001)MgO and [001]LBCO || [100]MgO or [010]MgO. Orderly oxygen vacancies were observed by line profile electron energy loss spectroscopy and by atomic resolution imaging. Especially, oxygen vacancy and nanodomain structures were found to have a crucial effect on the electronic transport and magnetic properties.

AB - A giant magnetoresistance effect (∼46 at 20 K under 7 T) and anomalous magnetic properties were found in a highly epitaxial double perovskite LaBaCo2O5.5δ (LBCO) thin film on (001) MgO. Aberration-corrected Electron Microscopy and related analytical techniques were employed to understand the nature of these unusual physical properties. The as-grown film is epitaxial with the c-axis of the LBCO structure lying in the film plane and with an interface relationship given by (100)LBCO || (001)MgO and [001]LBCO || [100]MgO or [010]MgO. Orderly oxygen vacancies were observed by line profile electron energy loss spectroscopy and by atomic resolution imaging. Especially, oxygen vacancy and nanodomain structures were found to have a crucial effect on the electronic transport and magnetic properties.

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JF - Journal of Applied Physics

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ER -

Nanodomain induced anomalous magnetic and electronic transport properties of LaBaCo₂O_5.5δ highly epitaxial thin films

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