Phase relation and thermoelectric property of Ca1-xBixMn1-yNiyO3 (0 ≤ x, y ≤ 0.1). Issue 26 (3rd March 2016)

• Record Type: Journal Article
• Authors: Fujimoto, Kenjiro; Gibu, Minoru; Yamaguchi, Yuki; Nishio, Keishi
• Is Part Of: MRS advances. Volume 1:Issue 26(2016)
• Page Start: 1941
• Page End: 1946
• Publication Date: 2016-03-03
• Subjects: combinatorial synthesis, -- cold isostatic pressing (CIP), -- thermoelectric; Electrical engineering -- Congresses; Physics -- Congresses; Materials -- Research -- Congresses; Materials science -- Congresses; 620.11
• DOI: 10.1557/adv.2016.173
• Languages: English
• ISSNs: 2059-8521

Abstract

ABSTRACT: We established a Ca1- x Bi x Mn1- y Ni y O3 (0 ≤ x, y ≤ 0.1) powder library using a combinatorial system based on the electrostatic spray deposition method. Single phase perovskite-type structures were identified in all of the powders. To measure electrical conductivity, the powder library was subjected to high-pressure (200 MPa) and heat-treated at 950°C for 1 hour in an oxygen atmosphere. As a representative example, the electrical conductivity of 5%-Bi-substituted CaMnO3-δ showed a higher value (63 S·cm -1 ) than an unsubstituted powder (13 S·cm -1 ). The improved electrical conductivity, on the other hand, was still very far from the ideal result (167 S·cm -1 ).