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Symbols
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- Time of issue:2021-11-23 10:20:03
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SYMBOL |
DEFINITION |
UNITS |
εT 33 , εT 11 |
Free Relative Dielectric Constant |
|
εS33 , εs 11 |
Clamping Relative Dielectric Constant |
|
tgδ |
Dissipation Factor at Low Field |
|
ρ |
Density |
g/cm 3 |
T c |
Curie Point |
ºC |
V |
Velocity |
m/s |
Z a |
Acoustic Impedance |
Mrayl |
K p, K 33, K t, K 31, K 15 |
Electromechanical Coupling Factors |
|
N p , N 33, N 31, N 15, N t, N c |
Frequency Constants |
Hz - m |
d 33, d 31, d 15 |
Piezoelectric Strain Constants |
10 -12 C/N |
d h |
Hydrostatic Piezoelectric Strain Constants |
10 -3 Vm/N |
Q pm |
Mechanical Quality Factor at Planar mode |
|
Y E11 , YE33 |
Young's Modulus under Short Circuit |
10 10 N/m 2 |
σ |
Poisson Ratio |
|
εT 33 (% Per Decade) |
Aging Rate of Free Relative Dielectric Constant |
|
K p (% Per Decade) |
Aging Rate of Planar Electromechanical Coupling Factor |
|
K t (% Per Decade) |
Aging Rate of Coupling Factor at Thickness mode |
|
N p (% Per Decade) |
Aging Rate of Frequency Constant of Planar Mode |
|
N t (% Per Decade) |
Aging Rate of Frequency Constant at Thickness Mode |
|
εT33 |
Thermal Stability of Free Relative Dielectric Constant |
|
GLOSSARY |
|
|
BT |
Barium Titanate |
|
Hard PZT |
Hard Lead Titanate Zirconate Compound |
|
Soft PZT |
Soft Lead Titanate Zirconate Compound |
|
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