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Nature of the superionic transition in Ag+ and Cu+ halides

Abstract:

Silver and copper halides generally display an abrupt (first-order) transition to the superionic state. However, powder diffraction studies and molecular dynamics (MD) simulations of AgI under hydrostatic pressure both indicate that a continuous superionic transition occurs on heating. The gradual onset of the highly conducting state is accompanied by an increasing fraction of dynamic Frenkel defects, a peak in the specific heat and anomalous behavior of the lattice expansion. Similar methods...

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Publication status:
Published

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Publisher copy:
10.1103/PhysRevB.68.014117

Authors


Barnes, AC More by this author
Berastegui, P More by this author
Crichton, WA More by this author
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Journal:
PHYSICAL REVIEW B
Volume:
68
Issue:
1
Pages:
141171-1411711
Publication date:
2003-07-01
DOI:
EISSN:
1095-3795
ISSN:
1098-0121
URN:
uuid:8843bf23-8150-47df-be78-478349a1a60a
Source identifiers:
60125
Local pid:
pubs:60125
Language:
English

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