Multiferroic properties and surface potential behaviors in cobalt-doped BiFeO3 film

Q. Zhang; C. H. Kim; Y. H. Jang; H. J. Hwang; J. H. Cho

doi:10.1063/1.3391667

Multiferroic properties and surface potential behaviors in cobalt-doped BiFeO₃ film

Q. Zhang, C. H. Kim, Y. H. Jang, H. J. Hwang, J. H. Cho

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

42 Scopus citations

Abstract

The spatial coexistence of magnetic and ferroelectric domains in multiferroic BiFe_0.96 Co_0.04 O₃ film is confirmed by multimode scanning probe microscopy. The applied bias dependence of the surface potential in BiFe_0.96 Co_0.04 O₃ indicates that surface potential is determined by the interplay of polarization and surface charges. It is also shown that multiferroic BiFe_0.96 Co_0.04 O₃ can more easily trap surface charges than the well-known ferroelectric PbZr0.53 Ti0.47 O₃. The time evolution of surface potential exhibits an exponential decay, which is closely related to the observed spread of surface charges. The study on BiFe_0.96 Co _0.04 O₃ unveils the origin and evolution behavior of the surface potential in BiFeO₃ -based multiferroic films.

Original language	English
Article number	152901
Journal	Applied Physics Letters
Volume	96
Issue number	15
DOIs	https://doi.org/10.1063/1.3391667
State	Published - Apr 12 2010
Externally published	Yes

Funding

This work was supported by the National Research Foundation of Korea grant funded by the Korea government (MEST) Grant Nos. (2010-00001198) and (2009-0073869).

Funders	Funder number
National Research Foundation of Korea
Ministry of Education, Science and Technology	2009-0073869, 2010-00001198

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abstract = "The spatial coexistence of magnetic and ferroelectric domains in multiferroic BiFe0.96 Co0.04 O3 film is confirmed by multimode scanning probe microscopy. The applied bias dependence of the surface potential in BiFe0.96 Co0.04 O3 indicates that surface potential is determined by the interplay of polarization and surface charges. It is also shown that multiferroic BiFe0.96 Co0.04 O3 can more easily trap surface charges than the well-known ferroelectric PbZr0.53 Ti0.47 O3. The time evolution of surface potential exhibits an exponential decay, which is closely related to the observed spread of surface charges. The study on BiFe0.96 Co 0.04 O3 unveils the origin and evolution behavior of the surface potential in BiFeO3 -based multiferroic films.",

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AU - Kim, C. H.

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AU - Hwang, H. J.

AU - Cho, J. H.

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AB - The spatial coexistence of magnetic and ferroelectric domains in multiferroic BiFe0.96 Co0.04 O3 film is confirmed by multimode scanning probe microscopy. The applied bias dependence of the surface potential in BiFe0.96 Co0.04 O3 indicates that surface potential is determined by the interplay of polarization and surface charges. It is also shown that multiferroic BiFe0.96 Co0.04 O3 can more easily trap surface charges than the well-known ferroelectric PbZr0.53 Ti0.47 O3. The time evolution of surface potential exhibits an exponential decay, which is closely related to the observed spread of surface charges. The study on BiFe0.96 Co 0.04 O3 unveils the origin and evolution behavior of the surface potential in BiFeO3 -based multiferroic films.

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Multiferroic properties and surface potential behaviors in cobalt-doped BiFeO₃ film

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