IMAGE: (IMAGE) Science China Press Caption The change of polarization upon a strain in (a) perovskite ferroelectrics and (b) HP ferroelectrics, where the black/green curve represent the dependence of polarization on temperature before/after a tensile strain is applied. Red, white and grey spheres denote O, H and C atoms respectively. Credit ©Science China Press Usage Restrictions Use with credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.