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Effects of lattice polarity on interfacial space charges and defect disorder in ionically conducting AgI heterostructures.

Abstract:

Heterostructured (β/γ)-AgI exhibits a spontaneous lattice polarization not accounted for in standard space-charge models. This polarization field dominates the positional variation of energies of isolated defects, and Ag(+) vacancies and interstitials are stabilized at alternate [β/γ] interfaces. This suggests enhanced Frenkel pair separation, analogous to electronic charge separation in polar semiconductor heterostructures. Stoichiometric systems are, however, characterized by associated Fre...

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Publication status:
Published

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Authors


Morgan, BJ More by this author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Materials
Journal:
Physical review letters
Volume:
107
Issue:
20
Pages:
206102
Publication date:
2011-11-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:86843fb4-aa56-475f-b641-f7e543e5da1b
Source identifiers:
206449
Local pid:
pubs:206449
Language:
English

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