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SUMMARY:In situ high-energy x-ray diffraction study on bulk bismuth ferrit
 e ceramic
DTSTART;VALUE=DATE-TIME:20141120T063000Z
DTEND;VALUE=DATE-TIME:20141120T080000Z
DTSTAMP;VALUE=DATE-TIME:20260711T050042Z
UID:indico-contribution-697@events01.synchrotron.org.au
DESCRIPTION:Speakers: Neamul Khansur (UNSW)\nBismuth ferrite\, BiFeO3  (BF
 ) is a multiferroic ceramic familiar for the existence of both strong ferr
 oelectric and magnetic ordering at room temperature. In addition to the mu
 ltiferroicity\, the remarkably high Curie temperature (Tc ) and spontaneou
 s polarization (Ps ) of BF has made it an attractive candidate to replace 
 lead-based Pb(Zr\,Ti)O3  for industrial applications. However\, the high c
 oercive field (> 10 kV.mm-1 ) and related poling inefficiency is the major
  issue for the application of BF as a piezoelectric material. To tailor th
 e actuator property of bulk BF ceramic\, it is essential to understand the
  structure-property relationship in the ceramic at field-on condition. In 
 situ high-energy x-ray diffraction measurements with a large area detector
  in transmission geometry can be utilized to quantify the structural varia
 tion with field in these materials. Here\, we used the high-energy x-ray d
 iffraction beamline I12-JEEP of the Diamond Light Source\, UK. Qualitative
  and quantitative analysis of diffraction patterns reveal that ferroelasti
 c domain switching is the primary mechanism for the strain response. Inter
 estingly\, a strain magnitude similar to thin film BF was observed\; howev
 er\, the origin of strain response is different.\n\nhttps://events01.synch
 rotron.org.au/event/3/contributions/697/
LOCATION: NCSS Exhibition Area
URL:https://events01.synchrotron.org.au/event/3/contributions/697/
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