Electrical conductivity and thermoelectric power of La2-xSr xNiO4+δ

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Electrical conductivity, Seebeck coefficient, and nonstoichiometric oxygen content of La2-xSrxNiO4+δ (x = 0, 0.2, 0.4) were measured as a function of Sr content, temperature, and oxygen partial pressure. At above around 873 K, mobility of hole decreases as temperature increases. The temperature dependence of hole mobility indicates large polaron conduction. The relationship between Seebeck coefficient and electrical conductivity is explained by metal like band conduction model. The behavior of electrical conductivity and Seebeck coefficient strongly suggests that electron (hole) is delocalized in La2-xSrxNiO4+δ at high temperatures.

Original languageEnglish
Title of host publicationECS Transactions - Solid State Ionic Devices 6 - Nanoionics - 214th ECS Meeting
Pages317-325
Number of pages9
Edition51
DOIs
Publication statusPublished - 2008 Dec 1
EventSolid State Ionic Devices 6 - Nanoionics - 214th ECS Meeting - Honolulu, HI, United States
Duration: 2008 Oct 122008 Oct 17

Publication series

NameECS Transactions
Number51
Volume16
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

OtherSolid State Ionic Devices 6 - Nanoionics - 214th ECS Meeting
CountryUnited States
CityHonolulu, HI
Period08/10/1208/10/17

ASJC Scopus subject areas

  • Engineering(all)

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