0

Full Content is available to subscribers

Subscribe/Learn More  >

Combining Experiments and Modeling to Characterize New Compositions of Relaxor Ferroelectric Single Crystals

[+] Author Affiliations
John A. Gallagher

Merrimack College, North Andover, MA

Paper No. SMASIS2015-9030, pp. V001T01A016; 7 pages
doi:10.1115/SMASIS2015-9030
From:
  • ASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
  • Volume 1: Development and Characterization of Multifunctional Materials; Mechanics and Behavior of Active Materials; Modeling, Simulation and Control of Adaptive Systems
  • Colorado Springs, Colorado, USA, September 21–23, 2015
  • Conference Sponsors: Aerospace Division
  • ISBN: 978-0-7918-5729-8
  • Copyright © 2015 by ASME

abstract

Field induced phase transformations in relaxor ferroelectric single crystals with compositions near the morphotropic phase boundary can be induced by electrical or mechanical loading above a certain threshold. Concurrent electrical and mechanical loading of [011]C cut and poled crystals drives the ferroelectric rhombohedral to ferroelectric orthorhombic phase transformation at lower threshold levels than either load alone. Likewise, electrical loading of [001]C cut and poled crystals hinders the mechanically driven ferroelectric rhombohedral to ferroelectric orthorhombic phase transformation. The current experimental technique for characterization of the large field behavior including the phase transformation requires an extensive set of measurements performed under electric field cycling at different stress preloads and stress cycling at different bias electric fields, repeated at multiple temperatures. This procedure requires specialized equipment and training, and is very time-consuming. In this work a mechanism based model is combined with a more limited set of experiments to obtain the same results. The model utilizes a work-energy criterion that calculates the work required to induce the transformation by overcoming an energy barrier. This approach reduces the number of required experiments while potentially eliminating the need of a load frame for mechanical loading of [011]C crystals. This decreases the time and resources required for characterization of new compositions. The results of the combined experiment / modeling approach are compared to the fully experimental approach and error is discussed.

Copyright © 2015 by ASME
Topics: Crystals , Modeling

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In