PZT powder, Plumbum zirconate-titanate. Lead titanate zirconate, Lead zirconate titanate, Lead zirconium titanate, CAS# 12626-81-2, Lead zirconate titanate powder
PZT Powder (Lead Zirconate Titanate) Chemical Formula:
* Pb[ZrxTi1-x]O3 0<x<1)
PZT Powder (Lead Zirconate Titanate) Description:
a) Lead zirconate titanate (Pb[ZrxTi1-x]O3 0<x<1) is a ceramic perovskite material that shows a marked piezoelectric effect. PZT-based compounds are composed of the chemical elements lead and zirconium and the chemical compound titanate which are combined under extremely high temperatures. A mechanical filter is then used to filter out the particulates. PZT-based compounds are used in the manufacturing of ultrasound transducers, in the manufacturing of ceramic capacitors, STM/AFM actuators (tubes), and the like.
b) Also known as PZT, it was developed by Yutaka Takagi, Gen Shirane and Etsuro Sawaguchi, physicists at the Tokyo Institute of Technology, around 1952.
c) Being piezoelectric, it develops a voltage difference across two of its faces when compressed (useful for sensor applications), or physically changes shape when an external electric field is applied (useful for actuator applications).
d) Being pyroelectric, this material develops a voltage difference across two of its faces when it experiences a temperature change. As a result, it can be used as a sensor for detecting heat.
e) It is also ferroelectric, which means it has a spontaneous electric polarization (electric dipole) which can be reversed in the presence of an electric field.
f) The material features an extremely large dielectric constant at the morphotropic phase boundary (MPB) near x = 0.52. These properties make PZT-based compounds one of the most prominent and useful electroceramics. Commercially, it is usually not used in its pure form, rather it is doped with either acceptor dopants, which create oxygen (anion) vacancies, or donor dopants, which create metal (cation) vacancies and facilitate domain wall motion in the material. In general, acceptor doping creates hard PZT while donor doping creates soft PZT. Hard and soft PZT's generally differ in their piezoelectric constants. Piezoelectric constants are proportional to the polarization or to the electrical field generated per unit of mechanical stress, or alternatively is the mechanical strain produced by per unit of electric field applied. In general, soft PZT has a higher piezoelectric constant, but larger losses in the material due to internal friction. In hard PZT, domain wall motion is pinned by the impurities thereby lowering the losses in the material, but at the expense of a reduced piezoelectric constant. Source: Wikipedia
a) PZT is used to make ultrasound transducers both for loudspeakers and microphones and other sensors and actuators, as well as high-value ceramic capacitors and FRAM chips.
b) PZT is also used in the manufacture of ceramic resonators for reference timing in electronic circuitry.
PZT Powder (Lead Zirconate Titanate) Packaging:
a) Jars, pails, drums, multiply paper bags, bulk bags and fiberboard containers.
b) For further information on packaging options contact READE
PZT Powder (Lead Zirconate Titanate) TSCA (SARA Title III) Status:
a) Yes. For further information please call the E.P.A. at 1.202.554.1404
b) PZT is a hazardous material, registered as CAS registry number 12626-81-2 , EC-No 235-727-4, and PubChem 159452
Use an appropriate NIOSH-approved respirator if airborne concentrations exceed established exposure limits. Utilization of respiratory equipment should be in accordance with 29 CFR 1910.1025 and 29 CFR 1910.134
The International Agency for Research on Cancer (IARC) classifies Lead Compounds (not metallic lead) as a Category 2A (probably carcinogenic to humans). The National Toxicology Program (NTP) classifies Lead/Lead Compounds as reasonably anticipated to be a human carcinogen based on limited human evidence and laboratory testing of animals.
