Electric-field-induced structural changes in deuterated potassium dihydrogen phosphate

Reeuwijk, S.J. van; Puig-Molina, A.; Graafsma, H.

doi:10.1103/physrevb.62.6192

Cited by 27 publications

(11 citation statements)

References 16 publications

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“…Recently 5 , X-ray diffraction has been used to study electric field induced structural changes in deuterated KDP and the authors claim to have obtained a very good agreement when comparing their results with the temperature induced changes reported in the literature.…”

Section: Introductionmentioning

confidence: 69%

Synchrotron radiation X-ray multiple diffraction in the study of KDP phase transition induced by electric field

Santos

Gelamo

et al. 2001

Mat. Res.

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In this work, the application of the X-ray multiple diffraction technique using synchrotron radiation at Laboratório Nacional de Luz Síncrotron (LNLS) to study KDP phase transition induced by electric field is discussed. A Huber three-axis (omega, phi, 2theta) diffractometer mounted on a table which rotates around the incident beam allows to measure Renninger scans (RS) at the XRD station of LNLS using the adequate polarization for the experiments. Prior results indicated (080) as the best choice for the KDP primary reflection and the (440)( quatro.gif (94 bytes) 40) four-beam case for the secondary. Two Bragg-surface diffraction (BSD) reflections, where the secondary beam is propagated parallel to the sample surface, are involved in this multiple diffraction case. A RS interval of 3.3° around phi = 0° position was measured while the electric field was increased up to 6 kV/cm. At this value, a phase transition was observed and the secondary peaks became narrower and changed their RS position indicating possible occurrence of a metastable ferroelectric phase

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Section: Introductionmentioning

confidence: 69%

Synchrotron radiation X-ray multiple diffraction in the study of KDP phase transition induced by electric field

Santos

Gelamo

et al. 2001

Mat. Res.

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“…In order to prevent charge build-up underneath the electrodes and near crystal defects, and hence an inhomogeneous ®eld distribution, the external electric ®eld is modulated (Paturle et al, 1991;van Reeuwijk et al, 2000). The output signal of the detector should be synchronized with the applied electric ®eld, such that the diffracted signals corresponding to the two states of the electric ®eld can be recorded in two different counters.…”

Section: Methodsmentioning

confidence: 99%

Polarization switching in BaTiO₃thin films measured by X-ray diffraction exploiting anomalous dispersion

et al. 2004

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Films of BaTiO3 ranging from 20 nm to 300 nm in thickness were grown with pulsed laser deposition on Nb:SrTiO3. The quality of the layers was investigated using atomic force microscopy, X‐ray reflectivity and X‐ray diffraction. Both the micrographs and the X‐ray reflectivity spectra indicate a smooth surface of the layers. The X‐ray diffraction profiles measured using synchrotron radiation show features characteristic for highly crystalline thin films. The application of an external electric field parallel to the c axis changes an hkl reflection of BaTiO3 to an hk reflection. Due to the anomalous dispersion, the intensities of these two reflections are not equal and the atomic displacements can be determined from the intensity differences. The electric field‐induced intensity changes can be as large as a few percent, which makes data collection from a 100 nm film using Cu Kα radiation from an X‐ray tube feasible. The ΔI/I values of a number of reflections from the 20 and 50 nm films were measured using synchrotron radiation. The observed ΔI/I values were in good agreement with the intensity changes expected for polarization switching in the bulk.

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“…Small changes in the rocking curve can be measured with the well-known modulation-demodulation technique, [9][10][11][12][13] where the detected signal is demodulated in phase with the modulation of the electric field. In its simplest form, only the direction of the electric field is switched.…”

Section: A Setupmentioning

confidence: 99%

“…One can think of intensity measurements where intensity differences between two quasi-static states of an external electric field are to be determined using the modulationdemodulation technique. 7,13 The strain relaxation should take place on a time scale much shorter than the modulation period of the electric field. The rocking curves of the two quasistatic states can be completely separated when a sufficiently strong electric field is applied.…”

Section: B Influence Of the Rise Time Of The Electric Fieldmentioning

confidence: 99%

Time-resolved x-ray diffraction study of the relaxation process of electric-field-induced strain in KD2PO4

Reeuwijk

Puig-Molina

Mathon

et al. 2003

Journal of Applied Physics

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Electric-field-induced structural changes in deuterated potassium dihydrogen phosphate

Cited by 27 publications

References 16 publications

Synchrotron radiation X-ray multiple diffraction in the study of KDP phase transition induced by electric field

Synchrotron radiation X-ray multiple diffraction in the study of KDP phase transition induced by electric field

Polarization switching in BaTiO₃thin films measured by X-ray diffraction exploiting anomalous dispersion

Time-resolved x-ray diffraction study of the relaxation process of electric-field-induced strain in KD2PO4

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Electric-field-induced structural changes in deuterated potassium dihydrogen phosphate

Cited by 27 publications

References 16 publications

Synchrotron radiation X-ray multiple diffraction in the study of KDP phase transition induced by electric field

Synchrotron radiation X-ray multiple diffraction in the study of KDP phase transition induced by electric field

Polarization switching in BaTiO3thin films measured by X-ray diffraction exploiting anomalous dispersion

Time-resolved x-ray diffraction study of the relaxation process of electric-field-induced strain in KD2PO4

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Polarization switching in BaTiO₃thin films measured by X-ray diffraction exploiting anomalous dispersion