scholarly journals Dynamic response of polar nanoregions under an electric field in a paraelectric KTa0.61Nb0.39O3 single crystal near the para-ferroelectric phase boundary

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Hao Tian ◽  
Bo Yao ◽  
Lei Wang ◽  
Peng Tan ◽  
Xiangda Meng ◽  
...  
Keyword(s):  
Electric Field ◽  
Dynamic Response ◽  
Single Crystal ◽  
Phase Boundary ◽  
Ferroelectric Phase ◽  
Polar Nanoregions

Deuteron Magnetic Resonance (DMR) - Study on CD3NH3HgCl3

1989 ◽  
Vol 44 (12) ◽  
pp. 1177-1182
Author(s):  
Martin Körfer ◽  
Raymond Kind ◽  
Hartmut Fuess
Keyword(s):  
Magnetic Resonance ◽  
Electric Field ◽  
Single Crystal ◽  
Electric Field Gradient ◽  
Field Gradient ◽  
Ferroelectric Phase ◽  
Paraelectric Phase ◽  
Polar Axis ◽  
Precessional Motion

Abstract Deuteron magnetic resonance (DMR) spectroscopic was performed on a single crystal of CD3NH3HgCl3. The electric field gradient tensors of the independent CD3NH3+- groups were determined by quadrupole perturbed NMR. NMR-NQR-rotation patterns were recorded in the ferro- (T = 295 K) and paraelectric (F = 342 K) phases. In the ferroelectric phase a precessional motion of the CD3NH3+-group was detected. The angle %(T) between the axis of the molcculc and the precession-axis increases with temperature. In the paraelectric phase the precession of methylammonium is superimposed by an anisotropic 90° -flipping motion. The flipping planes are parallel to the polar axis.

Dielectric Properties and Phase Transition of [110]-Oriented 0.68PMN-0.32PT Single Crystals Induced by Temperature and DC Electric Field

2007 ◽  
Vol 336-338 ◽  
pp. 42-45
Author(s):  
Zhen Rong Li ◽  
Jun Jie Qian ◽  
Guo Qiang Zhang ◽  
Zeng Zhe Xi ◽  
Zhuo Xu ◽  
...  
Keyword(s):  
Phase Transition ◽  
Electric Field ◽  
Single Crystal ◽  
Single Crystals ◽  
Ferroelectric Phase ◽  
Orthorhombic Phase ◽  
Polarization Rotation ◽  
Dc Electric Field ◽  
T Phase ◽  
Oriented Single Crystal

The dielectric response of [110]-oriented 0.68PMN-0.32PT single crystal under dc electric field has been investigated. The characteristics of phase transition under temperature and dc electric field are provided. When electric field is above 2.3kV/cm, abnormal phase transition is induced by temperature and electric field, which corresponds to the phase transition from rhombohedral to orthorhombic ferroelectric phase. With increasing dc electric field, the stable temperature region of orthorhombic phase is expanded. The electric field-temperature (E-T) phase diagram of [110]-oriented 0.68PMN-0.32PT single crystals is presented. The polarization rotation in [110]-oriented single crystal is discussed.

Method to Achieve the Morphotropic Phase Boundary in HfxZr1−xO2 by Electric Field Cycling for DRAM Cell Capacitor Applications

2021 ◽  
Vol 42 (4) ◽  
pp. 517-520
Author(s):  
Seongho Kim ◽  
Seung Hwan Lee ◽  
Min Ju Kim ◽  
Wan Sik Hwang ◽  
Hyun Soo Jin ◽  
...  
Keyword(s):  
Electric Field ◽  
Phase Boundary ◽  
Morphotropic Phase Boundary ◽  
Field Cycling

High-performance near-infrared photodetectors based on C3N quantum dots integrated with single-crystal graphene

2021 ◽  
Author(s):  
Yun Zhao ◽  
Xiaoqiang Feng ◽  
Menghan Zhao ◽  
Xiaohu Zheng ◽  
Zhiduo Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Electric Field ◽  
Single Crystal ◽  
High Performance ◽  
Near Infrared ◽  
Fast Response ◽  
Local Electric Field ◽  
Infrared Photodetectors ◽  
Photocurrent Response

Employing C3N QD-integrated single-crystal graphene, photodetectors exhibited a distinct photocurrent response at 1550 nm. The photocurrent map revealed that the fast response derive from C3N QDs that enhanced the local electric field near graphene.

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