Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 23, Issue 2, Pages 234-240Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201201467
Keywords
nanoscale twins; phase transitions; oxygen tilting; perovskites; BiFeO3
Categories
Funding
- ONR [N00014-11-1-0384, N00014-08-1-0915, N00014-07-1-0825]
- ARO [W911NF-12-1-0085]
- Department of Energy, Office of Basic Energy Sciences [ER-46612]
- NSF [DMR-1066158, DMR-0701558]
- National Natural Science Foundation of China [10904122]
- MINECO-Spain [MAT2010-18113, MAT2010-10093-E, CSD2007-00041]
- MRI from NSF [0722625]
- Department of Defense
- Direct For Computer & Info Scie & Enginr
- Division Of Computer and Network Systems [0959124] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1066158] Funding Source: National Science Foundation
- Office Of The Director
- EPSCoR [0918970] Funding Source: National Science Foundation
Ask authors/readers for more resources
Perovskite oxides form a fascinating class of materials because they possess many active degrees of freedom that result in a large variety of physical effects. One important structural parameter controlling the behavior of perovskites is the tilting of the oxygen octahedral. Among other properties, this tilting is coupled with the electric and magnetic orders, which leads to novel and potentially useful phenomena; recent examples include new mechanisms for improper and triggered ferroelectricity, rich phase diagrams, and novel chiral phases, counter-intuitive behaviors of ferroelectric and multiferroic films, and weak ferromagnetism in otherwise antiferromagnetic materials. Interestingly, most perovskites present the same tilted structures, which are few in number and fairly simple. In contrast, here we use different theoretical methods to show that a complete new family of stable phases, all displaying complex and nano-twinned tilting patterns (as well as other anomalous properties), exists in multiferroic BiFeO3 and related compounds.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available