Electrical conduction behavior of layered perovskite La 1-xBa1+xGaO4-δ

Kyu Hyoung Lee; Jong Hwa Kim; Hye Lim Kim; Shin Kim; Hong Lim Lee

doi:10.1143/JJAP.44.254

Electrical conduction behavior of layered perovskite La _1-xBa_1+xGaO_4-δ

Kyu Hyoung Lee, Jong Hwa Kim, Hye Lim Kim, Shin Kim, Hong Lim Lee

Department of Materials Science and Engineering

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

2 Citations (Scopus)

Abstract

Layered perovskite oxides of the system La_1-xBa _1+xGaO_4-δ were synthesized and their electrical conduction behavior was studied. The oxides of the composition range 0 ≤ x ≤ 0.2 were analyzed as a single orthorhombic phase with a K ₂NiF₄-type structure. In the presence of water vapor, proton conduction was observed due to the incorporation of water into the oxygen vacancies for these oxides. Below 350°C, La_0.8Ba _1.2GaO_3.9 was considered to be a pure proton conductor and the activation energy for proton conduction was measured as 0.77 eV. In a dry atmosphere, it exhibited mixed conduction consisting of oxygen ions and holes at a high oxygen partial pressure, p(O₂), and showed only oxygen-ion conduction at an intermediate and low p(O₂).

Original language	English
Pages (from-to)	254-257
Number of pages	4
Journal	Japanese Journal of Applied Physics
Volume	44
Issue number	1 A
DOIs	https://doi.org/10.1143/JJAP.44.254
Publication status	Published - 2005 Jan

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.44.254

Cite this

@article{d6ee0def45a44936b7fd3bbd598c0a90,

title = "Electrical conduction behavior of layered perovskite La 1-xBa1+xGaO4-δ",

abstract = "Layered perovskite oxides of the system La1-xBa 1+xGaO4-δ were synthesized and their electrical conduction behavior was studied. The oxides of the composition range 0 ≤ x ≤ 0.2 were analyzed as a single orthorhombic phase with a K 2NiF4-type structure. In the presence of water vapor, proton conduction was observed due to the incorporation of water into the oxygen vacancies for these oxides. Below 350°C, La0.8Ba 1.2GaO3.9 was considered to be a pure proton conductor and the activation energy for proton conduction was measured as 0.77 eV. In a dry atmosphere, it exhibited mixed conduction consisting of oxygen ions and holes at a high oxygen partial pressure, p(O2), and showed only oxygen-ion conduction at an intermediate and low p(O2).",

author = "Lee, {Kyu Hyoung} and Kim, {Jong Hwa} and Kim, {Hye Lim} and Shin Kim and Lee, {Hong Lim}",

year = "2005",

month = jan,

doi = "10.1143/JJAP.44.254",

language = "English",

volume = "44",

pages = "254--257",

journal = "Japanese Journal of Applied Physics",

issn = "0021-4922",

number = "1 A",

}

TY - JOUR

T1 - Electrical conduction behavior of layered perovskite La 1-xBa1+xGaO4-δ

AU - Lee, Kyu Hyoung

AU - Kim, Jong Hwa

AU - Kim, Hye Lim

AU - Kim, Shin

AU - Lee, Hong Lim

PY - 2005/1

Y1 - 2005/1

N2 - Layered perovskite oxides of the system La1-xBa 1+xGaO4-δ were synthesized and their electrical conduction behavior was studied. The oxides of the composition range 0 ≤ x ≤ 0.2 were analyzed as a single orthorhombic phase with a K 2NiF4-type structure. In the presence of water vapor, proton conduction was observed due to the incorporation of water into the oxygen vacancies for these oxides. Below 350°C, La0.8Ba 1.2GaO3.9 was considered to be a pure proton conductor and the activation energy for proton conduction was measured as 0.77 eV. In a dry atmosphere, it exhibited mixed conduction consisting of oxygen ions and holes at a high oxygen partial pressure, p(O2), and showed only oxygen-ion conduction at an intermediate and low p(O2).

AB - Layered perovskite oxides of the system La1-xBa 1+xGaO4-δ were synthesized and their electrical conduction behavior was studied. The oxides of the composition range 0 ≤ x ≤ 0.2 were analyzed as a single orthorhombic phase with a K 2NiF4-type structure. In the presence of water vapor, proton conduction was observed due to the incorporation of water into the oxygen vacancies for these oxides. Below 350°C, La0.8Ba 1.2GaO3.9 was considered to be a pure proton conductor and the activation energy for proton conduction was measured as 0.77 eV. In a dry atmosphere, it exhibited mixed conduction consisting of oxygen ions and holes at a high oxygen partial pressure, p(O2), and showed only oxygen-ion conduction at an intermediate and low p(O2).

UR - http://www.scopus.com/inward/record.url?scp=15544375505&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=15544375505&partnerID=8YFLogxK

U2 - 10.1143/JJAP.44.254

DO - 10.1143/JJAP.44.254

M3 - Article

AN - SCOPUS:15544375505

SN - 0021-4922

VL - 44

SP - 254

EP - 257

JO - Japanese Journal of Applied Physics

JF - Japanese Journal of Applied Physics

IS - 1 A

ER -

Electrical conduction behavior of layered perovskite La _1-xBa_1+xGaO_4-δ

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this