First-Principles Determination of Chain-Structure Instability in KNbO$_3$

Physics – Condensed Matter – Materials Science

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

13 pages, latex, 3 uuencoded postscript figures

Scientific paper

10.1103/PhysRevLett.74.4067

A complete mapping in the Brillouin zone of the structural instability associated with the ferroelectric phase transitions of KNbO$_3$ has been obtained by first-principles calculations using an LAPW linear response approach. The wavevector dependence of the instability reveals pronounced two-dimensional character, which corresponds to chains oriented along $\left<100\right>$\ directions of displaced Nb atoms. The results are discussed in relation to models of the ferroelectric phase transitions.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

First-Principles Determination of Chain-Structure Instability in KNbO$_3$ does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with First-Principles Determination of Chain-Structure Instability in KNbO$_3$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and First-Principles Determination of Chain-Structure Instability in KNbO$_3$ will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-93352

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.