Abstract
It was shown previously that the self-supported films of nanocrystalline (30-80 nm) BaTiO3 spontaneously split into regions, within which the direction of spontaneous polarization of each grain is aligned as closely as possible to some average direction. These regions, called polycrystalline macro-domains, may be of two types: (1) those with out-of-plane polarization and (2) those with in-plane polarization. In-plane macro-domains exhibit in-plane optical anisotropy which can be monitored using cross-polarized transmitted light. This property was utilized in the current work to study the influence of temperature variation on macro-domains. According to the temperature dependence of the intensity of cross-polarized transmitted light, the films could be divided into three groups: (group 1) those films that did not exhibit strong changes in intensity; (group 2) those that exhibited a strong and abrupt change at a temperature between 20 and 120 °C; and (group 3) those that upon heating exhibited a gradual increase in the intensity of the cross-polarized transmitted light. The observed changes were reversible and consistent with a 90° rotation of the c-axis of some grains, which caused reversible changes in the macro-domain structure.
| Original language | English |
|---|---|
| Pages (from-to) | 5312-5317 |
| Number of pages | 6 |
| Journal | Journal of Materials Science |
| Volume | 44 |
| Issue number | 19 |
| DOIs | |
| Publication status | Published - Oct 2009 |
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ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering
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Evidence of 90° polarization switching in polycrystalline macro-domains of self-supported BaTiO3 films. / Suleimanov, Nathan; Milner, Alla; Zon, Ilijya; Roytburd, Alexander; Lubomirsky, Igor.
In: Journal of Materials Science, Vol. 44, No. 19, 10.2009, p. 5312-5317.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Evidence of 90° polarization switching in polycrystalline macro-domains of self-supported BaTiO3 films
AU - Suleimanov, Nathan
AU - Milner, Alla
AU - Zon, Ilijya
AU - Roytburd, Alexander
AU - Lubomirsky, Igor
PY - 2009/10
Y1 - 2009/10
N2 - It was shown previously that the self-supported films of nanocrystalline (30-80 nm) BaTiO3 spontaneously split into regions, within which the direction of spontaneous polarization of each grain is aligned as closely as possible to some average direction. These regions, called polycrystalline macro-domains, may be of two types: (1) those with out-of-plane polarization and (2) those with in-plane polarization. In-plane macro-domains exhibit in-plane optical anisotropy which can be monitored using cross-polarized transmitted light. This property was utilized in the current work to study the influence of temperature variation on macro-domains. According to the temperature dependence of the intensity of cross-polarized transmitted light, the films could be divided into three groups: (group 1) those films that did not exhibit strong changes in intensity; (group 2) those that exhibited a strong and abrupt change at a temperature between 20 and 120 °C; and (group 3) those that upon heating exhibited a gradual increase in the intensity of the cross-polarized transmitted light. The observed changes were reversible and consistent with a 90° rotation of the c-axis of some grains, which caused reversible changes in the macro-domain structure.
AB - It was shown previously that the self-supported films of nanocrystalline (30-80 nm) BaTiO3 spontaneously split into regions, within which the direction of spontaneous polarization of each grain is aligned as closely as possible to some average direction. These regions, called polycrystalline macro-domains, may be of two types: (1) those with out-of-plane polarization and (2) those with in-plane polarization. In-plane macro-domains exhibit in-plane optical anisotropy which can be monitored using cross-polarized transmitted light. This property was utilized in the current work to study the influence of temperature variation on macro-domains. According to the temperature dependence of the intensity of cross-polarized transmitted light, the films could be divided into three groups: (group 1) those films that did not exhibit strong changes in intensity; (group 2) those that exhibited a strong and abrupt change at a temperature between 20 and 120 °C; and (group 3) those that upon heating exhibited a gradual increase in the intensity of the cross-polarized transmitted light. The observed changes were reversible and consistent with a 90° rotation of the c-axis of some grains, which caused reversible changes in the macro-domain structure.
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UR - http://www.scopus.com/inward/citedby.url?scp=68949167774&partnerID=8YFLogxK
U2 - 10.1007/s10853-009-3642-1
DO - 10.1007/s10853-009-3642-1
M3 - Article
AN - SCOPUS:68949167774
VL - 44
SP - 5312
EP - 5317
JO - Journal of Materials Science
JF - Journal of Materials Science
SN - 0022-2461
IS - 19
ER -