Direct observation of electric field-induced tetragonal-orthorhombic phase transition in KNN-based piezoelectric ceramics via in-situ synchrotron diffraction

ABSTRACTIn situ Raman scattering, UPS and HREELS measurements have been used to study the fcc to orthorhombic phase transition in RbC60 thin films. Large changes in the Raman spectra are interpreted in terms of increased interfullerene coupling in the orthorhombic phase. However, the data do not support the proposed polymer model for this phase. Photoemission measurements indicate only small differences in the electronic states between the two phases in contrast with photopolymerized C60 where additional states are observed. Low energy metallic-like excitations and screening of intramolecular vibrations are observed in HREELS.

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In situ x-ray diffraction study of an electric field induced phase transition in the single crystal relaxor ferroelectric, 92% Pb(Zn1/3Nb2/3)O3–8% PbTiO3

Applied Physics Letters ◽

10.1063/1.124034 ◽

1999 ◽

Vol 74 (19) ◽

pp. 2848-2850 ◽

Cited By ~ 111

Author(s):

M. K. Durbin ◽

E. W. Jacobs ◽

J. C. Hicks ◽

S.-E. Park

Keyword(s):

Phase Transition ◽

Electric Field ◽

Single Crystal ◽

Diffraction Study ◽

Relaxor Ferroelectric ◽

X Ray Diffraction ◽

X Ray

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Direct observation of ferroelectric domain switching in varying electric field regimes using in situ TEM

Micron ◽

10.1016/j.micron.2012.02.009 ◽

2012 ◽

Vol 43 (11) ◽

pp. 1121-1126 ◽

Cited By ~ 32

Author(s):

C.R. Winkler ◽

A.R. Damodaran ◽

J. Karthik ◽

L.W. Martin ◽

M.L. Taheri

Keyword(s):

Electric Field ◽

Direct Observation ◽

Domain Switching ◽

Ferroelectric Domain ◽

In Situ Tem

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In situ diffraction measurements of lattice response due to shock loading, including direct observation of the α–ε phase transition in iron

International Journal of Impact Engineering ◽

10.1016/j.ijimpeng.2006.09.050 ◽

2006 ◽

Vol 33 (1-12) ◽

pp. 343-352 ◽

Cited By ~ 8

Author(s):

D.H. Kalantar ◽

G.W. Collins ◽

J.D. Colvin ◽

J.H. Eggert ◽

J. Hawreliak ◽

...

Keyword(s):

Phase Transition ◽

Direct Observation ◽

Shock Loading ◽

Ε Phase ◽

In Situ Diffraction

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Field-induced phase transition in Bi1/2Na1/2TiO3-based lead-free piezoelectric ceramics

Journal of Applied Crystallography ◽

10.1107/s0021889810038264 ◽

2010 ◽

Vol 43 (6) ◽

pp. 1314-1321 ◽

Cited By ~ 148

Author(s):

Manuel Hinterstein ◽

Michael Knapp ◽

Markus Hölzel ◽

Wook Jo ◽

Antonio Cervellino ◽

...

Keyword(s):

Phase Transition ◽

Electric Field ◽

Tetragonal Phase ◽

Structural Information ◽

Rhombohedral Phase ◽

Rietveld Refinements ◽

Tilting Angle ◽

Reversible Phase Transition ◽

Electric Field Induced Strain

The origin of the electric field-induced strain in the polycrystalline ceramic 0.92Bi1/2Na1/2TiO3–0.06BaTiO3–0.02K1/2Na1/2NbO3was investigated usingin situhigh-resolution X-ray and neutron diffraction techniques. The initially existing tetragonal phase with pseudocubic lattice undergoes a reversible phase transition to a significantly distorted rhombohedral phase under electric field, accompanied by a change in the oxygen octahedral tilting froma0a0c+toa−a−a−and in the tilting angle. The polarization values for the tetragonal and rhombohedral phases were calculated based on the structural information from Rietveld refinements. The large recoverable electric field-induced strain is a consequence of a reversible electric field-induced phase transition from an almost nonpolar tetragonal phase to a ferroelectrically active rhombohedral phase.

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High Pressure Synchrotron Diffraction of KCa2Nb3O10, a Layered Perovskite Compound

MRS Proceedings ◽

10.1557/proc-524-133 ◽

1998 ◽

Vol 524 ◽

Cited By ~ 2

Author(s):

K. A. Steiner ◽

W. T. Petuskey

Keyword(s):

Phase Transition ◽

High Pressure ◽

Diamond Anvil Cell ◽

Orthorhombic Phase ◽

Layered Perovskite ◽

X Ray Diffraction ◽

Synchrotron Diffraction ◽

X Ray ◽

Lattice Constants ◽

Diamond Anvil

ABSTRACTHigh pressure synchrotron x-ray diffraction experiments were conducted on KCa2Nb3O10, to determine lattice constants as a function of pressure. A diamond anvil cell was used to produce pressures up to 66 GPa. A phase transition occurred at 13.5 GPa. From the lattice constants, linear compressibilities of 8.55 × 10-4 GPa-1 in the a direction, -9.40 × 10-4 GPa-1 in the b direction, and 142 × 10-4 GPa-1 in the c direction, and a bulk modulus of 68.5 GPa were found for the lower pressure orthorhombic phase.

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