TF022 - Grain size effects of A:B site ratio in BaTiO3 thin films

P. R. Daniels; S. Aygun; J. F. Ihlefeld; W. Borland; J. P. Maria

doi:10.1109/ISAF.2008.4693862

TF022 - Grain size effects of A:B site ratio in BaTiO₃ thin films

P. R. Daniels, S. Aygun, J. F. Ihlefeld, W. Borland, J. P. Maria

Materials Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

BaTiO₃ films with thickness ∼1 micron were deposited on Pt and Cu foil substrates via a CSD process with varying A:B site ratios and were fired at temperatures ranging from 900 to 1200°C. The intent of this study is to determine the impact of A:B site ratio on phase assembly, grain growth, morphology, and film density. Films with excess Barium, up to 5%, fired at and above 1000°C exhibited grain sizes exceeding 5 microns with uniform and isotropic morphology. Films with excess Barium showed no formation of a secondary phase via XRD at 1100°C but a secondary phase was present at 1200°C with barium excess exceeding 4%. For films with large Ba excess and grain sizes in excess of 1 μm there is no evidence of tetragonality. Electrical testing as a function of voltage and temperature revealed room temperature permittivities of 4000 and tunability greater than 13:1 at 35V applied bias for Ba excess of 3%. Though more thorough research is needed, these results suggest that tuning the Ba:Ti ratio presents possibilities for dielectric property engineering in BaTiO₃.

Original language	English (US)
Title of host publication	17th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2008
DOIs	https://doi.org/10.1109/ISAF.2008.4693862
State	Published - Dec 1 2008
Event	17th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2008 - Santa Fe, NM, United States Duration: Feb 23 2008 → Feb 28 2008

Publication series

Name	IEEE International Symposium on Applications of Ferroelectrics
Volume	2

Other

Other	17th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2008
Country/Territory	United States
City	Santa Fe, NM
Period	2/23/08 → 2/28/08

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.1109/ISAF.2008.4693862

Cite this

@inproceedings{df847646f2194b3ab4cf34b9dddbe6e1,

title = "TF022 - Grain size effects of A:B site ratio in BaTiO3 thin films",

abstract = "BaTiO3 films with thickness ∼1 micron were deposited on Pt and Cu foil substrates via a CSD process with varying A:B site ratios and were fired at temperatures ranging from 900 to 1200°C. The intent of this study is to determine the impact of A:B site ratio on phase assembly, grain growth, morphology, and film density. Films with excess Barium, up to 5%, fired at and above 1000°C exhibited grain sizes exceeding 5 microns with uniform and isotropic morphology. Films with excess Barium showed no formation of a secondary phase via XRD at 1100°C but a secondary phase was present at 1200°C with barium excess exceeding 4%. For films with large Ba excess and grain sizes in excess of 1 μm there is no evidence of tetragonality. Electrical testing as a function of voltage and temperature revealed room temperature permittivities of 4000 and tunability greater than 13:1 at 35V applied bias for Ba excess of 3%. Though more thorough research is needed, these results suggest that tuning the Ba:Ti ratio presents possibilities for dielectric property engineering in BaTiO3.",

author = "Daniels, {P. R.} and S. Aygun and Ihlefeld, {J. F.} and W. Borland and Maria, {J. P.}",

year = "2008",

month = dec,

day = "1",

doi = "10.1109/ISAF.2008.4693862",

language = "English (US)",

isbn = "1424427444",

series = "IEEE International Symposium on Applications of Ferroelectrics",

booktitle = "17th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2008",

note = "17th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2008 ; Conference date: 23-02-2008 Through 28-02-2008",

}

Daniels, PR, Aygun, S, Ihlefeld, JF, Borland, W & Maria, JP 2008, TF022 - Grain size effects of A:B site ratio in BaTiO₃ thin films. in 17th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2008., 4693862, IEEE International Symposium on Applications of Ferroelectrics, vol. 2, 17th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2008, Santa Fe, NM, United States, 2/23/08. https://doi.org/10.1109/ISAF.2008.4693862

TF022 - Grain size effects of A:B site ratio in BaTiO₃ thin films. / Daniels, P. R.; Aygun, S.; Ihlefeld, J. F. et al.
17th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2008. 2008. 4693862 (IEEE International Symposium on Applications of Ferroelectrics; Vol. 2).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AU - Daniels, P. R.

AU - Aygun, S.

AU - Ihlefeld, J. F.

AU - Borland, W.

AU - Maria, J. P.

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N2 - BaTiO3 films with thickness ∼1 micron were deposited on Pt and Cu foil substrates via a CSD process with varying A:B site ratios and were fired at temperatures ranging from 900 to 1200°C. The intent of this study is to determine the impact of A:B site ratio on phase assembly, grain growth, morphology, and film density. Films with excess Barium, up to 5%, fired at and above 1000°C exhibited grain sizes exceeding 5 microns with uniform and isotropic morphology. Films with excess Barium showed no formation of a secondary phase via XRD at 1100°C but a secondary phase was present at 1200°C with barium excess exceeding 4%. For films with large Ba excess and grain sizes in excess of 1 μm there is no evidence of tetragonality. Electrical testing as a function of voltage and temperature revealed room temperature permittivities of 4000 and tunability greater than 13:1 at 35V applied bias for Ba excess of 3%. Though more thorough research is needed, these results suggest that tuning the Ba:Ti ratio presents possibilities for dielectric property engineering in BaTiO3.

AB - BaTiO3 films with thickness ∼1 micron were deposited on Pt and Cu foil substrates via a CSD process with varying A:B site ratios and were fired at temperatures ranging from 900 to 1200°C. The intent of this study is to determine the impact of A:B site ratio on phase assembly, grain growth, morphology, and film density. Films with excess Barium, up to 5%, fired at and above 1000°C exhibited grain sizes exceeding 5 microns with uniform and isotropic morphology. Films with excess Barium showed no formation of a secondary phase via XRD at 1100°C but a secondary phase was present at 1200°C with barium excess exceeding 4%. For films with large Ba excess and grain sizes in excess of 1 μm there is no evidence of tetragonality. Electrical testing as a function of voltage and temperature revealed room temperature permittivities of 4000 and tunability greater than 13:1 at 35V applied bias for Ba excess of 3%. Though more thorough research is needed, these results suggest that tuning the Ba:Ti ratio presents possibilities for dielectric property engineering in BaTiO3.

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