BM532

BM532 - Lead Zirconate Titanate

Overview
BM532 is a modified version of BM500 and has a higher capacitance per unit volume. BM500 series ceramics are lead zirconate titanates with high coupling coefficients and piezoelectric charge coefficient. These materials find application in passive devices and low-power resonators.

Features

  • High coupling coefficient
  • High piezoelectric charge coefficient

Applications

  • Passive devices
  • Low power resonators
  • Hydrophones, • Communication
  • Sonobuoys, • Linear Arrays
  • Level, flow measurement
  • Flaw detection (NDE)
  • Accelerometers, • Actuators
  • Transducers


 

PROPERTY SYMBOL BM532 UNITS
Electrical1      
Relative Dielectric Constant   KT33 3250 —
Dissipation Factor   Tan d 2 %
Piezoelectric
Coupling Factor   kp 0.65 —
  k31 0.39 —
  k33 0.75 —
Charge Constant   d31 -270 10-12 C/N
  d33 590 10-12 C/N
Voltage Constant   g31 -9 10-3 Vm/N
  g33 20 10-3 Vm/N
Mechanical Quality Factor   QM 70 —
Frequency Constants 2   Np 2000 Hz.m
  N1 1425 Hz.m
  N4 1850 Hz.m
Elastic Modulus
Compliance   SE11 14 10-12 m2 /N
  SE33 20 10-12 m2 /N
Density   r 7.65 g/cm3
Curie Temperature   Tc 210 °C
Ageing Characteristics 3 (% change/time decade)
Coupling Factor   kp -1 —
Dielectric Constant   kT33 -1 —
Frequency Constant   Np

1

 Hz.m

BM532 - lead zirconate titanate

BM532 - lead zirconate titanate

Notes:
1  Low field parameters;
    measured at 1 KHz

2  NP - Planar
    N1 - Longtitudinal
    N4 - Thickness

3  Reference point of time;
    24 hours after polarization