Hydrogen Species Motion in Piezoelectrics: A Quasi-Elastic Neutron Scattering Study

Journal Article · Mon Mar 05 04:00:00 EST 2012 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3691114· OSTI ID:1037506

Alvine, Kyle J; Tyagi, Madhu; Brown, Craig; Udovic, Terrence J; Jenkins, T J; Pitman, Stan G

Hydrogen is known to damage or degrade piezoelectric materials, at low pressure for ferroelectric random access memory applications, and at high pressure for hydrogen powered vehicle applications. The piezoelectric degradation is in part governed by the motion of hydrogen species within the piezoelectric materials. We present here Quasi-Elastic Neutron Scattering (QENS) measurements of the local hydrogen species motion within lead zirconate titanate (PZT) and barium titanate (BTO) on samples charged by gaseous exposure to high-pressure gaseous hydrogen {approx}17 MPa. Filter Analyzed Neutron Spectroscopy (FANS) studies of the hydrogen enhanced vibrational modes are presented as well. Results are discussed in context of theoretically predicted interstitial hydrogen lattice sites and compared to comparable bulk diffusion studies of hydrogen diffusion in lead zirconate titanate.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1037506
• Report Number(s): PNNL-SA-83365; 19201; 43091; 37994; VT0504000
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 5 Vol. 111
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM
DIFFUSION
Environmental Molecular Sciences Laboratory
FERROELECTRIC MATERIALS
HYDROGEN
INTERSTITIALS
NEUTRON SPECTROSCOPY
PIEZOELECTRICITY
PZT
QUASI-ELASTIC SCATTERING
TITANATES
hydrogen
diffusion
quasi-elastic neutron
vibrational density of states