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Time-resolved X-ray diffraction study of the ferroelectric phase-transition in DKDP

Larsson, Jörgen LU ; Sondhauss, Peter LU ; Synnergren, O; Harbst, Michael LU ; Heimann, PA; Lindenberg, AM and Wark, JS (2004) In Chemical Physics 299(2-3). p.157-161
Abstract
We have performed experiments where DKDP has been irradiated by short (100 fs), laser pulses. Subsequently X-ray pulses with a duration of 100 ps were used as a probe. Time-resolved X-ray diffraction enables monitoring of the transitions between the paraelectric and ferroelectric phases. By recording the intensity of a peak only present in the paraelectric phase, we observe indications of a phase-transition following laser-irradiation of DKDP in the ferroelectric phase. We have estimated the laser heating effect, by measuring the strain (peak shifts) in the diffraction patterns. Furthermore, the orientation of the ferroelectric domains has been observed. In spite of the fact that the temperature did not rise above the Curie temperature,... (More)
We have performed experiments where DKDP has been irradiated by short (100 fs), laser pulses. Subsequently X-ray pulses with a duration of 100 ps were used as a probe. Time-resolved X-ray diffraction enables monitoring of the transitions between the paraelectric and ferroelectric phases. By recording the intensity of a peak only present in the paraelectric phase, we observe indications of a phase-transition following laser-irradiation of DKDP in the ferroelectric phase. We have estimated the laser heating effect, by measuring the strain (peak shifts) in the diffraction patterns. Furthermore, the orientation of the ferroelectric domains has been observed. In spite of the fact that the temperature did not rise above the Curie temperature, following interaction with this radiation, the polarization of ferroelectric domains was modified. This indicates a mechanism where short pulses impulsively excite phonons. which enable either reversal of entire domains, the shift of domain walls and/or the broadening of the domain wall widths. (C) 2003 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Chemical Physics
volume
299
issue
2-3
pages
157 - 161
publisher
Elsevier
external identifiers
  • wos:000220525200002
  • scopus:1642388394
ISSN
0301-0104
DOI
10.1016/j.chemphys.2003.11.019
language
English
LU publication?
yes
id
530db144-2920-4ff5-849b-31b24b033f6c (old id 283013)
date added to LUP
2007-10-24 08:22:34
date last changed
2017-01-01 06:48:19
@article{530db144-2920-4ff5-849b-31b24b033f6c,
  abstract     = {We have performed experiments where DKDP has been irradiated by short (100 fs), laser pulses. Subsequently X-ray pulses with a duration of 100 ps were used as a probe. Time-resolved X-ray diffraction enables monitoring of the transitions between the paraelectric and ferroelectric phases. By recording the intensity of a peak only present in the paraelectric phase, we observe indications of a phase-transition following laser-irradiation of DKDP in the ferroelectric phase. We have estimated the laser heating effect, by measuring the strain (peak shifts) in the diffraction patterns. Furthermore, the orientation of the ferroelectric domains has been observed. In spite of the fact that the temperature did not rise above the Curie temperature, following interaction with this radiation, the polarization of ferroelectric domains was modified. This indicates a mechanism where short pulses impulsively excite phonons. which enable either reversal of entire domains, the shift of domain walls and/or the broadening of the domain wall widths. (C) 2003 Elsevier B.V. All rights reserved.},
  author       = {Larsson, Jörgen and Sondhauss, Peter and Synnergren, O and Harbst, Michael and Heimann, PA and Lindenberg, AM and Wark, JS},
  issn         = {0301-0104},
  language     = {eng},
  number       = {2-3},
  pages        = {157--161},
  publisher    = {Elsevier},
  series       = {Chemical Physics},
  title        = {Time-resolved X-ray diffraction study of the ferroelectric phase-transition in DKDP},
  url          = {http://dx.doi.org/10.1016/j.chemphys.2003.11.019},
  volume       = {299},
  year         = {2004},
}