Structural phase transitions and electrical conductivity studies of (NH4)3H(SeO4)2 crystal

R. H. Chen; T. M. Chen; C. S. Shern

doi:10.1016/S0022-3697(98)00007-9

Structural phase transitions and electrical conductivity studies of (NH₄)₃H(SeO₄)₂ crystal

R. H. Chen^*, T. M. Chen, C. S. Shern

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

The electrical conductivity measurements were performed on single crystals of (NH₄)₃H(SeO₄)₂ in the temperature range of 25°C to 80°C along the c* axis. The crystal is found to be in a superionic state as it transforms to the high-temperature phase. The temperature dependence of the electrical conductivity of the sample crystal in the different phases follows the Arrhenius law. The increasing electrical conduction is due to the disorder of the oxygen atoms of the SeO₄ groups in the high-temperature phase. The proton ions can move among the sites which are the newly formed hydrogen bonds between the oxygen atoms of the nearest and next-nearest SeO₄ groups.

Original language	English
Pages (from-to)	1009-1013
Number of pages	5
Journal	Journal of Physics and Chemistry of Solids
Volume	59
Issue number	6-7
DOIs	https://doi.org/10.1016/S0022-3697(98)00007-9
Publication status	Published - 1998 Jun

Keywords

Electrical conductivity
Inorganic compound
Proton ionic conductor
Structural phase transition
Superionic

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

Access to Document

10.1016/S0022-3697(98)00007-9

Cite this

@article{0c2dab7b65914745832530497008d9a2,

title = "Structural phase transitions and electrical conductivity studies of (NH4)3H(SeO4)2 crystal",

abstract = "The electrical conductivity measurements were performed on single crystals of (NH4)3H(SeO4)2 in the temperature range of 25°C to 80°C along the c* axis. The crystal is found to be in a superionic state as it transforms to the high-temperature phase. The temperature dependence of the electrical conductivity of the sample crystal in the different phases follows the Arrhenius law. The increasing electrical conduction is due to the disorder of the oxygen atoms of the SeO4 groups in the high-temperature phase. The proton ions can move among the sites which are the newly formed hydrogen bonds between the oxygen atoms of the nearest and next-nearest SeO4 groups.",

keywords = "Electrical conductivity, Inorganic compound, Proton ionic conductor, Structural phase transition, Superionic",

author = "Chen, {R. H.} and Chen, {T. M.} and Shern, {C. S.}",

note = "Funding Information: Acknowledgemenls-This work was supported by the National Science Council, Republic of China (Project No. NSC 85-2 I l2-MOO3-009).",

year = "1998",

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doi = "10.1016/S0022-3697(98)00007-9",

language = "English",

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journal = "Journal of Physics and Chemistry of Solids",

issn = "0022-3697",

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T1 - Structural phase transitions and electrical conductivity studies of (NH4)3H(SeO4)2 crystal

AU - Chen, R. H.

AU - Chen, T. M.

AU - Shern, C. S.

N1 - Funding Information: Acknowledgemenls-This work was supported by the National Science Council, Republic of China (Project No. NSC 85-2 I l2-MOO3-009).

PY - 1998/6

Y1 - 1998/6

N2 - The electrical conductivity measurements were performed on single crystals of (NH4)3H(SeO4)2 in the temperature range of 25°C to 80°C along the c* axis. The crystal is found to be in a superionic state as it transforms to the high-temperature phase. The temperature dependence of the electrical conductivity of the sample crystal in the different phases follows the Arrhenius law. The increasing electrical conduction is due to the disorder of the oxygen atoms of the SeO4 groups in the high-temperature phase. The proton ions can move among the sites which are the newly formed hydrogen bonds between the oxygen atoms of the nearest and next-nearest SeO4 groups.

AB - The electrical conductivity measurements were performed on single crystals of (NH4)3H(SeO4)2 in the temperature range of 25°C to 80°C along the c* axis. The crystal is found to be in a superionic state as it transforms to the high-temperature phase. The temperature dependence of the electrical conductivity of the sample crystal in the different phases follows the Arrhenius law. The increasing electrical conduction is due to the disorder of the oxygen atoms of the SeO4 groups in the high-temperature phase. The proton ions can move among the sites which are the newly formed hydrogen bonds between the oxygen atoms of the nearest and next-nearest SeO4 groups.

KW - Electrical conductivity

KW - Inorganic compound

KW - Proton ionic conductor

KW - Structural phase transition

KW - Superionic

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