Large polarization gradients and temperature-stable responses in compositionally-graded ferroelectrics

Anoop R. Damodaran, Shishir Pandya, Yubo Qi, Shang-Lin Hsu, Shi Liu, Christopher Nelson, Arvind Dasgupta, Peter Ercius, Colin Ophus, Liv R. Dedon, Josh C. Agar, Hongling Lu, Jialan Zhang, Andrew M. Minor, Andrew M. Rappe and Lane W. Martin ()
Additional contact information
Anoop R. Damodaran: University of California
Shishir Pandya: University of California
Yubo Qi: The Makineni Theoretical Laboratories, University of Pennsylvania
Shang-Lin Hsu: University of California
Shi Liu: The Makineni Theoretical Laboratories, University of Pennsylvania
Christopher Nelson: University of California
Arvind Dasgupta: University of California
Peter Ercius: National Center for Electron Microscopy, The Molecular Foundry, Lawrence Berkeley National Laboratory
Colin Ophus: National Center for Electron Microscopy, The Molecular Foundry, Lawrence Berkeley National Laboratory
Liv R. Dedon: University of California
Josh C. Agar: University of California
Hongling Lu: University of California
Jialan Zhang: Rutgers University
Andrew M. Minor: University of California
Andrew M. Rappe: The Makineni Theoretical Laboratories, University of Pennsylvania
Lane W. Martin: University of California

Nature Communications, 2017, vol. 8, issue 1, 1-8

Abstract: Abstract A range of modern applications require large and tunable dielectric, piezoelectric or pyroelectric response of ferroelectrics. Such effects are intimately connected to the nature of polarization and how it responds to externally applied stimuli. Ferroelectric susceptibilities are, in general, strongly temperature dependent, diminishing rapidly as one transitions away from the ferroelectric phase transition (TC). In turn, researchers seek new routes to manipulate polarization to simultaneously enhance susceptibilities and broaden operational temperature ranges. Here, we demonstrate such a capability by creating composition and strain gradients in Ba1−xSrxTiO3 films which result in spatial polarization gradients as large as 35 μC cm−2 across a 150 nm thick film. These polarization gradients allow for large dielectric permittivity with low loss (ɛr≈775, tan δ

Date: 2017
References: Add references at CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.nature.com/articles/ncomms14961 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14961

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms14961

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().