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Related Experiment Video

Updated: Mar 11, 2026

Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing

Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing

Published on: June 9, 2023

Electronic conduction in La-based perovskite-type oxides.

Hisashi Kozuka¹, Kazushige Ohbayashi¹, Kunihito Koumoto²

¹NGK Spark Plug Co., Ltd, 2808, Iwasaki, Komaki-shi, Aichi 485-8510, Japan.

Science and Technology of Advanced Materials

|November 24, 2016

Summary

Lanthanum cobalt nickelate (LaCo_0.5Ni_0.5O_3±) shows excellent electrical conductivity and stability at high temperatures. This makes it a superior material for oxide electrodes and wiring, outperforming other lanthanum-based perovskites.

Keywords:

carrier concentration carrier mobility effective mass electrical conductivity electronic conduction relaxation time

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Area of Science:

Materials Science
Solid-State Chemistry
Electrochemistry

Background:

Research focuses on developing advanced materials for high-temperature applications.
Standard metallic conductors face limitations in extreme environments.
Lanthanum-based perovskite oxides are explored for their electronic properties.

Approach:

Systematic investigation of La-based perovskite-type oxides.
Evaluation of electronic conduction properties.
Analysis of electrical conductivity and thermal stability up to 1173 K in air.

Key Points:

LaCo_0.5Ni_0.5O_3± exhibits high electrical conductivity (1.9 × 10³ S cm^-1 at R.T.) due to high carrier concentration and low effective mass.
This material maintains high conductivity from room temperature to 1173 K with minimal oxygen content change.
LaCo_0.5Ni_0.5O_3± demonstrates superior stability and conductivity compared to La_1-xSr_xCoO_3± and La_1-xSr_xMnO_3± at elevated temperatures.

Conclusions:

LaCo_0.5Ni_0.5O_3± is a highly promising candidate for oxide electrodes and wiring operating at high temperatures.
Its stability and electrical properties surpass those of other investigated lanthanum-based perovskites.
This material offers a viable alternative to traditional metallic conductors in demanding environments.