Structural characteristics of ferroelectric phase transformations in single-domain epitaxial films

2004 ◽  
Vol 95 (12) ◽  
pp. 8118-8123 ◽  
Author(s):  
S. P. Alpay ◽  
I. B. Misirlioglu ◽  
A. Sharma ◽  
Z.-G. Ban
Keyword(s):  
Phase Transformations ◽  
Ferroelectric Phase ◽  
Structural Characteristics ◽  
Epitaxial Films ◽  
Single Domain

Interface control of tetragonal ferroelectric phase in ultrathin Si-doped HfO2 epitaxial films

2021 ◽  
Vol 207 ◽  
pp. 116696
Author(s):  
Tao Li ◽  
Juncai Dong ◽  
Nian Zhang ◽  
Zicheng Wen ◽  
Zhenzhong Sun ◽  
...  
Keyword(s):  
Ferroelectric Phase ◽  
Epitaxial Films ◽  
Interface Control ◽  
Si Doped

Electrical fatigue behavior of NBT-BT-xKNN ferroelectrics: effect of ferroelectric phase transformations and oxygen vacancies

2020 ◽  
Vol 8 (11) ◽  
pp. 3887-3896 ◽  
Author(s):  
Xi Shi ◽  
Nitish Kumar ◽  
Mark Hoffman
Keyword(s):  
Phase Transformations ◽  
Degradation Rate ◽  
Oxygen Vacancies ◽  
Ferroelectric Phase ◽  
Fatigue Behavior ◽  
Surface Damage ◽  
Micro Scale ◽  
Scale Surface

The reduction of degradation rate at high cycles indicates the subsequent contribution from micro-scale surface damage, leading to irreversible fatigue.

Interface Control of Tetragonal Ferroelectric Phase in Ultrathin Si-Doped HfO 2 Epitaxial Films

2020 ◽  
Author(s):  
Tao Li ◽  
Juncai Dong ◽  
Nian Zhang ◽  
Zicheng Wen ◽  
Zhenzhong Sun ◽  
...  
Keyword(s):  
Ferroelectric Phase ◽  
Epitaxial Films ◽  
Interface Control ◽  
Si Doped

Structural and Magnetic Characterization of Rare Earth and Transition Metal Films Grown on Epitaxial Buffer Films on Semiconductor

1989 ◽  
Vol 151 ◽  
Author(s):  
R. F. C. Farrow ◽  
S. S. P. Parkin ◽  
V. S. Speriosu ◽  
A. Bezinge ◽  
A. P. Segmuller
Keyword(s):  
Rare Earth ◽  
Structural Characteristics ◽  
Metal Films ◽  
Epitaxial Films ◽  
Coherency Strain ◽  
Magnetic Data ◽  
Bulk Crystals ◽  
Structural Effects ◽  
X Ray

ABSTRACTStructural and magnetic data are presented and discussed for epitaxial films of rare earth metals ( Dy, Ho, Er) on LaF3 films on the GaAs(TTT) surface and Fe on Ag films on the GaAs(001) surface. Both systems exhibit unusual structural characteristics which influence the magnetic properties of the metal films. In the case of rare earth epitaxy on LaF3 we present evidence for epitaxy across an incommensurate or discommensurate interface. Coherency strain is not transmitted into the metal which behaves much like bulk crystals of the rare earths. In the case of Fe films , tilted epitaxy and long-range coherency strain are confirmed by X-ray diffractometry. Methods of controlling some of these structural effects by modifying the epitaxial structures are presented.

Dynamic piezoelectric response of relaxor single crystal under electrically driven inter-ferroelectric phase transformations

2020 ◽  
Vol 116 (22) ◽  
pp. 222903 ◽  
Author(s):  
E. A. Patterson ◽  
M. Staruch ◽  
B. R. Matis ◽  
S. Young ◽  
S. E. Lofland ◽  
...  
Keyword(s):  
Single Crystal ◽  
Phase Transformations ◽  
Ferroelectric Phase ◽  
Piezoelectric Response

Domain structures in PbZr0.95 Ti0.05O3

1983 ◽  
Vol 41 ◽  
pp. 60-61
Author(s):  
K. Kuroda ◽  
A. H. Heuer
Keyword(s):  
Phase Transformations ◽  
Ferroelectric Phase ◽  
Ion Beam ◽  
Lead Zirconate ◽  
Microscopical Study ◽  
Thin Sections ◽  
Practical Applications ◽  
Antiferroelectric Phase ◽  
Diamond Saw ◽  
Electron Microscopical

Lead zirconate titenate (Pb(Zr,Ti)O3, PZT) is a well known piezoelectric substance. Three phases have been reported in modified PbZr0.95Ti0.05O3 (PZT 95/5) bodies -- a low temperature rhombohedral ferroelectric phase (FR1), a high temperature rhombohedral ferroelectric phase (FR2) and a cubic paraelectric phase (PC). A pressure induced ferroelectric to antiferroelectric phase transformation has also been reported in modified PZT 95/5 ceramics. These phase transformations are of technological importance, as this ceramic has practical applications as a power source in which large quantities of charge are released by shock wave depolarization.Both as-fired and pressure de-poled samples of PZT 95/5 ceramics with 0.8% Nb were investigated by transmission electron microscopy. Specimens for electron microscopical study were prepared from thin sections, which had been sliced by diamond saw and then mechanically polished with 600 grit SiC paper followed by diamond polishing to about 100 μm thickness. These specimens were then argon ion milled to electron transparency; a liquid N2 cooled stage was used to try and prevent the occurrence of phase transformations due to heating during ion beam thinning. Special care was also taken to minimize beam heating during electron microscopical observation.

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