Abstract
A detailed study of a novel material exhibiting antiferro-, ferri-, and ferroelectric phases has been undertaken. The tilt angle, spontaneous polarisation and the dynamics of the helical unwinding have been examined as a function of temperature and voltage in all the phases of interest. The material exhibits large tilt angles (approx.31°) and values of spontaneous polarisation (approx.100nCcm-2) in cases where the helix is totally unwound. The behaviour of tilt angle as a function of applied electric field is examined in the ferri- and antiferro-electric phases. A stepwise increase in tilt angle as a function of applied voltage in the ferri-electric phase is presented, as well as unusual behaviour in the antiferro-electric state. In addition, a preliminary investigation of the change in spontaneous polarisation as a function of pressure is presented. It is shown that the dependence of spontaneous polarisation in the ferroelectric phase is relatively weak.
| Original language | English |
|---|---|
| Pages (from-to) | 69-79 |
| Number of pages | 11 |
| Journal | Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals |
| Volume | 263 |
| Issue number | pt 4 |
| Publication status | Published - 1995 |
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ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Electro-optic and piezo-optic studies of an antiferro-ferri-ferro-electric system. / Robinson, W. K.; Carboni, C.; Gleeson, H. F.; Hird, M.; Styring, P.; Seed, A.
In: Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals, Vol. 263, No. pt 4, 1995, p. 69-79.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Electro-optic and piezo-optic studies of an antiferro-ferri-ferro-electric system
AU - Robinson, W. K.
AU - Carboni, C.
AU - Gleeson, H. F.
AU - Hird, M.
AU - Styring, P.
AU - Seed, A.
PY - 1995
Y1 - 1995
N2 - A detailed study of a novel material exhibiting antiferro-, ferri-, and ferroelectric phases has been undertaken. The tilt angle, spontaneous polarisation and the dynamics of the helical unwinding have been examined as a function of temperature and voltage in all the phases of interest. The material exhibits large tilt angles (approx.31°) and values of spontaneous polarisation (approx.100nCcm-2) in cases where the helix is totally unwound. The behaviour of tilt angle as a function of applied electric field is examined in the ferri- and antiferro-electric phases. A stepwise increase in tilt angle as a function of applied voltage in the ferri-electric phase is presented, as well as unusual behaviour in the antiferro-electric state. In addition, a preliminary investigation of the change in spontaneous polarisation as a function of pressure is presented. It is shown that the dependence of spontaneous polarisation in the ferroelectric phase is relatively weak.
AB - A detailed study of a novel material exhibiting antiferro-, ferri-, and ferroelectric phases has been undertaken. The tilt angle, spontaneous polarisation and the dynamics of the helical unwinding have been examined as a function of temperature and voltage in all the phases of interest. The material exhibits large tilt angles (approx.31°) and values of spontaneous polarisation (approx.100nCcm-2) in cases where the helix is totally unwound. The behaviour of tilt angle as a function of applied electric field is examined in the ferri- and antiferro-electric phases. A stepwise increase in tilt angle as a function of applied voltage in the ferri-electric phase is presented, as well as unusual behaviour in the antiferro-electric state. In addition, a preliminary investigation of the change in spontaneous polarisation as a function of pressure is presented. It is shown that the dependence of spontaneous polarisation in the ferroelectric phase is relatively weak.
UR - http://www.scopus.com/inward/record.url?scp=0029222808&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0029222808&partnerID=8YFLogxK
M3 - Article
VL - 263
SP - 69
EP - 79
JO - Molecular Crystals and Liquid Crystals
JF - Molecular Crystals and Liquid Crystals
SN - 0026-8941
IS - pt 4
ER -