Crystal structure analysis of epitaxial BiFeO3-BiCoO3 solid solution films grown by metalorganic chemical vapor deposition

Shintaro Yasui; Ken Nishida; Hiroshi Naganuma; Soichiro Okamura; Takashi Iijima; Hiroshi Funakubo

doi:10.1143/JJAP.46.6948

Crystal structure analysis of epitaxial BiFeO₃-BiCoO₃ solid solution films grown by metalorganic chemical vapor deposition

Shintaro Yasui, Ken Nishida, Hiroshi Naganuma, Soichiro Okamura, Takashi Iijima, Hiroshi Funakubo

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

40 Citations (Scopus)

Abstract

Epitaxial (001)-oriented (1 - x)BiFeO₃-xBiCoO₃ solid solution films with x = 0-0.33 were grown on (100)SrTiO₃ substrates at 700°C by metalorganic chemical vapor deposition. The crystal structure of the films was characterized by high-resolution X-ray diffraction analysis and Raman spectroscopy. Unit cell volume and the lattice parameter were changed with increasing x. The BiFeO₃ film with = 0 has rhombohedral symmetry and those with x = 0.16 and 0.21 have a mixture of rhombohedral and tetragonal symmetries. Finally, tetragonal symmetry was observed for the film with x = 0.33 together with a small amount of the contamination phase. This result suggests that the symmetry of (1 - x)BiFeO₃-xBiCoO₃ films changed from rhombohedral to tetragonal with increasing x similarly to Pb(Zr,Ti)O ₃ having a large piezo response.

Original language	English
Pages (from-to)	6948-6951
Number of pages	4
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	46
Issue number	10 B
DOIs	https://doi.org/10.1143/JJAP.46.6948
Publication status	Published - 2007 Oct 22
Externally published	Yes

Keywords

BiCoO
BiFeO
Crystal structure
Ferroelectric
MOCVD
MPB
Piezoelectric
Solid solution
Tetragonal symmetry

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.46.6948

Cite this

Crystal structure analysis of epitaxial BiFeO₃-BiCoO₃ solid solution films grown by metalorganic chemical vapor deposition. / Yasui, Shintaro; Nishida, Ken; Naganuma, Hiroshi; Okamura, Soichiro; Iijima, Takashi; Funakubo, Hiroshi.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 46, No. 10 B, 22.10.2007, p. 6948-6951.

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

Yasui, Shintaro ; Nishida, Ken ; Naganuma, Hiroshi ; Okamura, Soichiro ; Iijima, Takashi ; Funakubo, Hiroshi. / Crystal structure analysis of epitaxial BiFeO₃-BiCoO₃ solid solution films grown by metalorganic chemical vapor deposition. In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 2007 ; Vol. 46, No. 10 B. pp. 6948-6951.

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abstract = "Epitaxial (001)-oriented (1 - x)BiFeO3-xBiCoO3 solid solution films with x = 0-0.33 were grown on (100)SrTiO3 substrates at 700°C by metalorganic chemical vapor deposition. The crystal structure of the films was characterized by high-resolution X-ray diffraction analysis and Raman spectroscopy. Unit cell volume and the lattice parameter were changed with increasing x. The BiFeO3 film with = 0 has rhombohedral symmetry and those with x = 0.16 and 0.21 have a mixture of rhombohedral and tetragonal symmetries. Finally, tetragonal symmetry was observed for the film with x = 0.33 together with a small amount of the contamination phase. This result suggests that the symmetry of (1 - x)BiFeO3-xBiCoO3 films changed from rhombohedral to tetragonal with increasing x similarly to Pb(Zr,Ti)O 3 having a large piezo response.",

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AU - Iijima, Takashi

AU - Funakubo, Hiroshi

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N2 - Epitaxial (001)-oriented (1 - x)BiFeO3-xBiCoO3 solid solution films with x = 0-0.33 were grown on (100)SrTiO3 substrates at 700°C by metalorganic chemical vapor deposition. The crystal structure of the films was characterized by high-resolution X-ray diffraction analysis and Raman spectroscopy. Unit cell volume and the lattice parameter were changed with increasing x. The BiFeO3 film with = 0 has rhombohedral symmetry and those with x = 0.16 and 0.21 have a mixture of rhombohedral and tetragonal symmetries. Finally, tetragonal symmetry was observed for the film with x = 0.33 together with a small amount of the contamination phase. This result suggests that the symmetry of (1 - x)BiFeO3-xBiCoO3 films changed from rhombohedral to tetragonal with increasing x similarly to Pb(Zr,Ti)O 3 having a large piezo response.

AB - Epitaxial (001)-oriented (1 - x)BiFeO3-xBiCoO3 solid solution films with x = 0-0.33 were grown on (100)SrTiO3 substrates at 700°C by metalorganic chemical vapor deposition. The crystal structure of the films was characterized by high-resolution X-ray diffraction analysis and Raman spectroscopy. Unit cell volume and the lattice parameter were changed with increasing x. The BiFeO3 film with = 0 has rhombohedral symmetry and those with x = 0.16 and 0.21 have a mixture of rhombohedral and tetragonal symmetries. Finally, tetragonal symmetry was observed for the film with x = 0.33 together with a small amount of the contamination phase. This result suggests that the symmetry of (1 - x)BiFeO3-xBiCoO3 films changed from rhombohedral to tetragonal with increasing x similarly to Pb(Zr,Ti)O 3 having a large piezo response.

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