Relaxors is the name given to a group of ferroelectric materials which strongly change their shape in electric fields.
Examples include : lead magnesium niobate, lead magnesium niobate-lead titanate, lead lanthanum zirconate titanate, and lead scandium niobate. There are also examples based on barium.
They have been studied for more than 50 years, but the physics underlying their properties is unknown.
Relaxors are characterized by a frequency-dependent peak in the dielectric permittivity and are critical to modern technological applications because they exhibit large dielectric constants and unparalleled piezoelectric coefficients. Despite decades of study a fundamental understanding of the origin of relaxor behavior is lacking.
Proc Natl Acad Sci U S A. 111(5)
Ideas for new topics, and suggested additions / corrections for old ones, are always welcome.
If you have skills or interests in a particular field, and have suggestions for Wikenigma, get in touch !
Or, if you'd like to become a regular contributor . . . request a login password. Registered users can edit the entire content of the site, and also create new pages.
( The 'Notes for contributors' section in the main menu has further information and guidelines etc.)
You are currently viewing an auto-translated version of Wikenigma
Please be aware that no automatic translation engines are 100% accurate, and so the auto-translated content will very probably feature errors and omissions.
Nevertheless, Wikenigma hopes that the translated content will help to attract a wider global audience.