Phenomenological analysis of domain width in rhombohedral BiFeO3 films

C. W. Huang; Lang Chen; J. Wang; Q. He; S. Y. Yang; Y. H. Chu; R. Ramesh

doi:10.1103/PhysRevB.80.140101

Phenomenological analysis of domain width in rhombohedral BiFeO₃ films

C. W. Huang
, Lang Chen
, J. Wang
, Q. He
, S. Y. Yang
, Y. H. Chu
, R. Ramesh

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

30 Citations (Scopus)

Abstract

The experimental domain size scaling law in epitaxial BiFeO₃ films shows a different behavior from predictions of the conventional elastic domains: the (101)-type 71° domains are much wider than that of (100)-type 109° despite the larger domain-wall energy in (100) boundary. A phenomenological analysis for rhombohedral BiFeO₃ film is proposed, and it reveals that both the depolarizing energy and the elastic energy are indispensable for the equilibrium domain structures. With the increase in the asymmetrical electrostatic boundary on the film surfaces, the dominant domain scaling mechanism changes from electrostatic-dependent domain structure to elastic-dependent one, which is consistent with the experimental data. The present results highlight the general role of depolarizing field in rhombohedral domain structures. © 2009 The American Physical Society.

Original language	English
Article number	140101
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	80
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.80.140101
Publication status	Published - 21 Oct 2009
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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title = "Phenomenological analysis of domain width in rhombohedral BiFeO3 films",

abstract = "The experimental domain size scaling law in epitaxial BiFeO3 films shows a different behavior from predictions of the conventional elastic domains: the (101)-type 71° domains are much wider than that of (100)-type 109° despite the larger domain-wall energy in (100) boundary. A phenomenological analysis for rhombohedral BiFeO3 film is proposed, and it reveals that both the depolarizing energy and the elastic energy are indispensable for the equilibrium domain structures. With the increase in the asymmetrical electrostatic boundary on the film surfaces, the dominant domain scaling mechanism changes from electrostatic-dependent domain structure to elastic-dependent one, which is consistent with the experimental data. The present results highlight the general role of depolarizing field in rhombohedral domain structures. {\textcopyright} 2009 The American Physical Society.",

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T1 - Phenomenological analysis of domain width in rhombohedral BiFeO3 films

AU - Huang, C. W.

AU - Chen, Lang

AU - Wang, J.

AU - He, Q.

AU - Yang, S. Y.

AU - Chu, Y. H.

AU - Ramesh, R.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2009/10/21

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N2 - The experimental domain size scaling law in epitaxial BiFeO3 films shows a different behavior from predictions of the conventional elastic domains: the (101)-type 71° domains are much wider than that of (100)-type 109° despite the larger domain-wall energy in (100) boundary. A phenomenological analysis for rhombohedral BiFeO3 film is proposed, and it reveals that both the depolarizing energy and the elastic energy are indispensable for the equilibrium domain structures. With the increase in the asymmetrical electrostatic boundary on the film surfaces, the dominant domain scaling mechanism changes from electrostatic-dependent domain structure to elastic-dependent one, which is consistent with the experimental data. The present results highlight the general role of depolarizing field in rhombohedral domain structures. © 2009 The American Physical Society.

AB - The experimental domain size scaling law in epitaxial BiFeO3 films shows a different behavior from predictions of the conventional elastic domains: the (101)-type 71° domains are much wider than that of (100)-type 109° despite the larger domain-wall energy in (100) boundary. A phenomenological analysis for rhombohedral BiFeO3 film is proposed, and it reveals that both the depolarizing energy and the elastic energy are indispensable for the equilibrium domain structures. With the increase in the asymmetrical electrostatic boundary on the film surfaces, the dominant domain scaling mechanism changes from electrostatic-dependent domain structure to elastic-dependent one, which is consistent with the experimental data. The present results highlight the general role of depolarizing field in rhombohedral domain structures. © 2009 The American Physical Society.

UR - https://www.scopus.com/pages/publications/71249083095

UR - https://www.scopus.com/pages/publications/71249083095#tab=impact

U2 - 10.1103/PhysRevB.80.140101

DO - 10.1103/PhysRevB.80.140101

M3 - RGC 21 - Publication in refereed journal

SN - 1098-0121

VL - 80

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

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ER -