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Layered perovskites surprise scientists with disappearing polarity under strain

By April Gocha / July 28, 2016

A team of scientists at Northwestern University has discovered that some ferroelectric materials are hiding a surprise. Layered perovskites don’t conform to conventional wisdom—instead, these materials completely turn off polarization if enough strain is applied to them.

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Other materials stories that may be of interest

By April Gocha / June 8, 2016

Graphene electrodes for OLEDs, mantis shrimp inspires ultrastrong materials, and other materials stories that may be of interest for June 8, 2016.

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Giant electric field-induced strains in lead-free ceramics

By April Gocha / December 3, 2015

An Iowa State University research team led by Xiaoli Tan recently discovered that Sr and Nb co-doped polycrystalline ceramics can generate the highest reported electrostrain value to date in any lead-free polycrystalline ceramic and represents a 50% improvement over previous results.

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Other materials stories that may be of interest

By April Gocha / October 6, 2015

DIY spray-on solar cells, assessing silicon in next-gen batteries, and other materials stories that may be of interest for October 6, 2015.

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Reports suggest wrinkles are good, at least for thin film ceramic membranes

By April Gocha / June 23, 2015

Scientists at ETH Zurich have found that doping is not the only way to influence ion conductivity in ceramic membranes.

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Dislocations create traffic jams—not express lanes—for ionic transport in metal oxides

By April Gocha / April 3, 2015

New research from Massachusetts Institute of Technology adds another to the list of things that aren’t as they seem—the effect of dislocations on ionic transport within metal oxides.

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Making ceramics perfect—and perfectly bendable—with air

By April Gocha / September 16, 2014

Researchers from California Institute of Technology say that bendable ceramics are more than possible—they report the fabrication of alumina nanostructures that are 99.9% air and can bend and deform with the best of them, springing back to shape after compressions of over 50% strain.

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Building a better flight: Synchrotron’s X-rays probe the failure of thermal barrier coatings

By April Gocha / August 29, 2014

An international team of researchers recently got a rare glimpse into what happens in thermal barrier coatings as they operate—by using a custom-built furnace and some heavy-duty X-rays.

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Other materials stories that may be of interest (with video)

By April Gocha / April 8, 2014

Other materials stories that may be of interest on April 8, 2014.

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