@article{76d992c1608348f0abe0458dff1c8d3f,
title = "Giant polarization in super-tetragonal thin films through interphase strain",
abstract = "Strain engineering has emerged as a powerful tool to enhance the performance of known functional materials. Here we demonstrate a general and practical method to obtain super-tetragonality and giant polarization using interphase strain. We use this method to create an out-of-plane–to–in-plane lattice parameter ratio of 1.238 in epitaxial composite thin films of tetragonal lead titanate (PbTiO3), compared to 1.065 in bulk. These thin films with super-tetragonal structure possess a giant remanent polarization, 236.3 microcoulombs per square centimeter, which is almost twice the value of known ferroelectrics. The super-tetragonal phase is stable up to 725°C, compared to the bulk transition temperature of 490°C. The interphase-strain approach could enhance the physical properties of other functional materials.",
author = "Linxing Zhang and Jun Chen and Longlong Fan and Oswaldo Di{\'e}guez and Jiangli Cao and Zhao Pan and Yilin Wang and Jinguo Wang and Moon Kim and Shiqing Deng and Jiaou Wang and Huanhua Wang and Jinxia Deng and Ranbo Yu and Scott, {James F.} and Xianran Xing",
note = "Publisher Copyright: {\textcopyright} 2017 The Authors.",
year = "2018",
month = aug,
day = "3",
doi = "10.1126/science.aan2433",
language = "אנגלית",
volume = "361",
pages = "494--497",
journal = "Science",
issn = "0036-8075",
publisher = "American Association for the Advancement of Science",
number = "6401",
}