Dynamic Critical Behavior of Ferroelectric Triglycine Sulfate from Dielectric Loss Measurements

1983 ◽  
Vol 50 (19) ◽  
pp. 1501-1504 ◽  
Author(s):  
R. García ◽  
J. A. Gonzalo
Keyword(s):  
Dielectric Loss ◽  
Critical Behavior ◽  
Triglycine Sulfate

Critical Behavior of Ferroelectric Triglycine Sulfate

1966 ◽  
Vol 144 (2) ◽  
pp. 662-665 ◽  
Author(s):  
J. A. Gonzalo
Keyword(s):  
Critical Behavior ◽  
Triglycine Sulfate

scholarly journals Analyzing Frequency Spectra of Dielectric Loss to Clarify Influence of L,α-alanine Doping on Phase Transition in Triglycine Sulfate

2021 ◽  
Author(s):  
Bich Dung MAI
Keyword(s):  
Phase Transition ◽  
Transition Temperature ◽  
Dielectric Loss ◽  
Phase Transition Temperature ◽  
Physical Method ◽  
Ferroelectric Material ◽  
Triglycine Sulfate ◽  
Frequency Spectra ◽  
The Relationship ◽  
La Doped

As reported in the literature, the doping of L,α-alanine (LA) led to increasing the phase transition temperature in triglycine sulfate (TGS) – a bio-ferroelectric material that has been widely applied in industry. The nature of this anomaly is commonly investigated by considerably complicated theoretical and experimental techniques. Unlike previous studies, the present work proposes a simple physical method of analyzing frequency spectra for dielectric loss to clarify the relationship between the movement of phase transition positions and the shift of relaxation frequencies observed in the spectra. The experimental results obtained for LA-doped TGS samples synthesized at different LA contents (0, 5, 10, 20, and 30 wt.%) were used for the analysis. It was indicated that the increase in phase transition temperature was accompanied by the decrease in relaxation frequencies due to the enhanced viscosity created by strong hydrogen bonds formed between amino acids of alanine and TGS structure.

MECHANICAL AND DIELECTRIC LOSS SPECTRA OF AMBERS

1985 ◽  
Vol 46 (C10) ◽  
pp. C10-565-C10-568
Author(s):  
M. WELLER ◽  
C. A. WERT ◽  
D. SCHLEE
Keyword(s):  
Dielectric Loss

A Review of Conformal Field Theory in 2D

2014 ◽  
Vol 6 (2) ◽  
pp. 1079-1105
Author(s):  
Rahul Nigam
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Conformal Field Theory ◽  
Statistical Mechanics ◽  
Critical Behavior ◽  
Verma Module ◽  
Virasoro Algebra ◽  
Quantum Field ◽  
Conformal Field ◽  
Insight Into

In this review we study the elementary structure of Conformal Field Theory in which is a recipe for further studies of critical behavior of various systems in statistical mechanics and quantum field theory. We briefly review CFT in dimensions which plays a prominent role for example in the well-known duality AdS/CFT in string theory where the CFT lives on the AdS boundary. We also describe the mapping of the theory from the cylinder to a complex plane which will help us gain an insight into the process of radial quantization and radial ordering. Finally we will develop the representation of the Virasoro algebra which is the well-known "Verma module".  

Sparse Representation Based Dielectric Loss Angle Measurement

2015 ◽  
Vol 9 (1) ◽  
pp. 566-570
Author(s):  
Zhang Ji ◽  
Jianfeng Zheng
Keyword(s):  
Dielectric Loss ◽  
Power Systems ◽  
Sparse Representation ◽  
Precise Measurement ◽  
Angle Measurement ◽  
Measuring Error ◽  
Loss Angle ◽  
Analysis Method ◽  
Electric Capacity ◽  
Dielectric Loss Angle

Precise measurement of dielectric loss angle is very important for electric capacity equipment in recent power systems. When signal-to-noise is low and fundamental frequency is fluctuating, aiming at the measuring error of dielectric loss angle based on some recent Fourier transform and wavelet transform harmonics analysis method, we propose a novel algorithm based on sparse representation, and improved it to be more flexible for signal sampling. Comparison experiments describe the advantages of our method.

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