Electrical properties of the ferrite SrFeOy at high temperatures

V. L. Kozhevnikov; I. A. Leonidov; M. V. Patrakeev; E. B. Mitberg; Kenneth R Poeppelmeier

doi:10.1006/jssc.2001.9120

Electrical properties of the ferrite SrFeO_y at high temperatures

V. L. Kozhevnikov, I. A. Leonidov, M. V. Patrakeev, E. B. Mitberg, Kenneth R Poeppelmeier

Northwestern University

Research output: Contribution to journal › Article

93 Citations (Scopus)

Abstract

The electrical properties of the strontium ferrite are reported within the temperature range 700 to 950°C and the oxygen partial pressure range between 10^-18 and 0.3 atm. The observed pressure and temperature dependencies of the conductivity in the brownmillerite form of the ferrite are related to the transition of the electron conductivity from the intrinsic regime, which is governed by the band gap of about 2 eV, to the extrinsic regime, which is controlled by the extrastoichiometric oxygen in the brownmillerite phase. The brownmillerite phase is shown to be a mixed conductor with the oxygen conductivity rising to about 0.1 S/cm at 850-900°C and P_o2>10^-17 atm. The perovskite-like layers in the brownmillerite structure provide a possible pathway for the ion migration.

Original language	English
Pages (from-to)	320-326
Number of pages	7
Journal	Journal of Solid State Chemistry
Volume	158
Issue number	2
DOIs	https://doi.org/10.1006/jssc.2001.9120
Publication status	Published - 2001

Keywords

Brownmillerite
Conductivity
Oxygen transfer
Perovskite
Strontium ferrite
Thermopower

ASJC Scopus subject areas

Inorganic Chemistry
Physical and Theoretical Chemistry
Materials Chemistry

Access to Document

10.1006/jssc.2001.9120

Fingerprint Dive into the research topics of 'Electrical properties of the ferrite SrFeO<sub>y</sub> at high temperatures'. Together they form a unique fingerprint.

Cite this

Kozhevnikov, V. L., Leonidov, I. A., Patrakeev, M. V., Mitberg, E. B., & Poeppelmeier, K. R. (2001). Electrical properties of the ferrite SrFeO_y at high temperatures. Journal of Solid State Chemistry, 158(2), 320-326. https://doi.org/10.1006/jssc.2001.9120

@article{060252c53c87489890dbfb72f3830581,

title = "Electrical properties of the ferrite SrFeOy at high temperatures",

abstract = "The electrical properties of the strontium ferrite are reported within the temperature range 700 to 950°C and the oxygen partial pressure range between 10-18 and 0.3 atm. The observed pressure and temperature dependencies of the conductivity in the brownmillerite form of the ferrite are related to the transition of the electron conductivity from the intrinsic regime, which is governed by the band gap of about 2 eV, to the extrinsic regime, which is controlled by the extrastoichiometric oxygen in the brownmillerite phase. The brownmillerite phase is shown to be a mixed conductor with the oxygen conductivity rising to about 0.1 S/cm at 850-900°C and Po2>10-17 atm. The perovskite-like layers in the brownmillerite structure provide a possible pathway for the ion migration.",

keywords = "Brownmillerite, Conductivity, Oxygen transfer, Perovskite, Strontium ferrite, Thermopower",

author = "Kozhevnikov, {V. L.} and Leonidov, {I. A.} and Patrakeev, {M. V.} and Mitberg, {E. B.} and Poeppelmeier, {Kenneth R}",

year = "2001",

doi = "10.1006/jssc.2001.9120",

language = "English",

volume = "158",

pages = "320--326",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

number = "2",

}

TY - JOUR

T1 - Electrical properties of the ferrite SrFeOy at high temperatures

AU - Kozhevnikov, V. L.

AU - Leonidov, I. A.

AU - Patrakeev, M. V.

AU - Mitberg, E. B.

AU - Poeppelmeier, Kenneth R

PY - 2001

Y1 - 2001

N2 - The electrical properties of the strontium ferrite are reported within the temperature range 700 to 950°C and the oxygen partial pressure range between 10-18 and 0.3 atm. The observed pressure and temperature dependencies of the conductivity in the brownmillerite form of the ferrite are related to the transition of the electron conductivity from the intrinsic regime, which is governed by the band gap of about 2 eV, to the extrinsic regime, which is controlled by the extrastoichiometric oxygen in the brownmillerite phase. The brownmillerite phase is shown to be a mixed conductor with the oxygen conductivity rising to about 0.1 S/cm at 850-900°C and Po2>10-17 atm. The perovskite-like layers in the brownmillerite structure provide a possible pathway for the ion migration.

AB - The electrical properties of the strontium ferrite are reported within the temperature range 700 to 950°C and the oxygen partial pressure range between 10-18 and 0.3 atm. The observed pressure and temperature dependencies of the conductivity in the brownmillerite form of the ferrite are related to the transition of the electron conductivity from the intrinsic regime, which is governed by the band gap of about 2 eV, to the extrinsic regime, which is controlled by the extrastoichiometric oxygen in the brownmillerite phase. The brownmillerite phase is shown to be a mixed conductor with the oxygen conductivity rising to about 0.1 S/cm at 850-900°C and Po2>10-17 atm. The perovskite-like layers in the brownmillerite structure provide a possible pathway for the ion migration.

KW - Brownmillerite

KW - Conductivity

KW - Oxygen transfer

KW - Perovskite

KW - Strontium ferrite

KW - Thermopower

UR - http://www.scopus.com/inward/record.url?scp=0034806464&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034806464&partnerID=8YFLogxK

U2 - 10.1006/jssc.2001.9120

DO - 10.1006/jssc.2001.9120

M3 - Article

AN - SCOPUS:0034806464

VL - 158

SP - 320

EP - 326

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

SN - 0022-4596

IS - 2

ER -