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Questions on ferroelectrics: why tetragonal ferroelectric ceramics are difficult to pole while rhombohedral ceramics easy to?

Submitted by Faxin Li on

 

It may be well known to researchers on ferroelectrics that tetragonal ferroelectric ceramics, such as BaTiO3, Ti-rich lead titanate zirconate (PZT), are difficult to pole even using a high DC field with long holding time. While the rhombohedral PZT or PZT near the morphotropic phase boundary (MPB) are easy to pole, especially the latter. Why?

 

Post doctoral position in geomechanics at CSIRO Petroleum, Melbourne, Australia

Submitted by Andrew Bunger on

https://recruitment.csiro.au/asp/job_details.asp?RefNo=2007%2F1216

The post doctoral fellow will be engaged in research on the mechanics of hydraulic fracturing of rock. The primary aim of this project is to investigate, using a novel approach for experimentation spanning laboratory and field scales, the effect of fracture size on the energy required for fracture extension in rock.

Call for IUTAM Symposia & Summer School Proposals

Submitted by Carl T. Herakovich on

ADVANCED CALL FOR PROPOSALS: IUTAM SYMPOSIUM and INSTRUCTIONAL SUMMER SCHOOLS for 2010 and 2011 (Proposals due no later than January 15, 2008)

The United States National Committee on Theoretical and Applied Mechanics (USNC/TAM) seeks proposals from U.S. authors and institutions to host IUTAM (International Union of Theoretical and Applied Mechanics) Symposia or IUTAM Instructional Summer Schools in 2010 or 2011.

First AAM 2008 Conference

Submitted by Anonymous (not verified) on

On June 17-20, 2008 the Inaugural Conference of the American Academy of Mechanics will be hosted in New Orleans, Louisiana. Following this conference this event will be hosted in the USA every four years to coincide with the ICTAM conference. This meeting will help the mechanics communities with applications in solids, fluids, bio, etc. to interact and set new challenging concepts and refinements in the existing areas of Mechanics.