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Phase separation and ferroelectric ordering in charge-frustrated
- Source :
-
Solid State Communications . Aug2010, Vol. 150 Issue 31/32, p1467-1472. 6p. - Publication Year :
- 2010
-
Abstract
- Abstract: The transmission electron microscopy observations of the charge ordering (CO) which governs the electronic polarization in clearly show the presence of a remarkable phase separation at low temperatures. Two CO ground states are found to adopt the charge modulations of and , respectively. Our structural study demonstrates that the incommensurately -modulated state is chiefly stable in samples with relatively lower oxygen contents. Data from theoretical simulations of the diffraction suggest that both - and -modulated phases have ferroelectric ordering. The effects of oxygen concentration on the phase separation and electric polarization in this layered system are discussed. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00381098
- Volume :
- 150
- Issue :
- 31/32
- Database :
- Academic Search Index
- Journal :
- Solid State Communications
- Publication Type :
- Academic Journal
- Accession number :
- 51990980
- Full Text :
- https://doi.org/10.1016/j.ssc.2010.05.032