Coupled Electrical and Magnetic Properties in (La,Sr)FeO_3-δ

Author

X.-D. Zhou, Missouri University of Science and TechnologyFollow
Qingsheng Cai
Jinbo Yang
M. S. Kim
William B. Yelon, Missouri University of Science and TechnologyFollow
William Joseph James, Missouri University of Science and TechnologyFollow
Y.-W. Shin
B. J. Scarfino
Harlan U. Anderson, Missouri University of Science and TechnologyFollow

Abstract

This article is aimed at studying the temperature dependence oxygen nonstoichiometry, magnetic moments, Fe³⁺ fraction, Néel temperature and conductivity of (La,Sr)FeO_3-δ. It is found that the magnetic properties in La_0.60 Sr_0.40 Fe_3-δ is determined by Fe³⁺ and its concentration, and the conductance is resulted from Fe⁴⁺ ions, which act as electron holes. Both of magnetic and electrical properties were directly governed by oxygen nonstoichiometry (δ). when δ=0.2, the compound has maximum Fe³⁺, the saturation magnetic moments and Néel temperature are 3.8 µB and 410 °C, both at the highest level, whereas the total carrier concentration is at the minimum.

Recommended Citation

X. Zhou et al., "Coupled Electrical and Magnetic Properties in (La,Sr)FeO_3-δ," Journal of Applied Physics, American Institute of Physics (AIP), Jan 2005.

The definitive version is available at https://doi.org/10.1063/1.1860911

Department(s)

Materials Science and Engineering

Second Department

Physics

Third Department

Chemistry

Sponsor(s)

United States. Department of Energy

Keywords and Phrases

Antiferromagnetic Materials; Electron Density; Hole Density; Lanthanum Compounds; Magnetic Moments; Neel Temperature; Seebeck Effect; Stoichiometry; Strontium Compounds; Superexchange Interactions

International Standard Serial Number (ISSN)

0021-8979

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2005 American Institute of Physics (AIP), All rights reserved.

Publication Date

01 Jan 2005