Electrical properties of pyrochlore-type silver tantalate and fluorite-type silver niobate

被引：3

作者：

Withanage, Withanage Isuru Udakara ^{[1
]}

Kumada, Nobuhiro ^{[1
]}

Takei, Takahiro ^{[1
]}

Yanagida, Sayaka ^{[1
]}

Tadanaga, Kiyoharu ^{[2
]}

Miura, Akira ^{[2
]}

Rosero-Navarro, Nataly Carolina ^{[2
]}

Azuma, Masaki ^{[3
]}

机构：

[1] Univ Yamanashi, Ctr Crystal Sci & Technol, 7-32 Miyamae, Kofu, Yamanashi 4008511, Japan

[2] Hokkaido Univ, Fac Engn, Div Appl Chem, Sapporo, Hokkaido 0608628, Japan

[3] Tokyo Inst Technol, Lab Mat & Struct, Midori Ku, 4259 Nagatsuta, Yokohama, Kanagawa 2268503, Japan

来源：

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2020年 / 128卷 / 01期

关键词：

Pyrochlore-type; Ionic conductivity; fluorite-type; IONIC-CONDUCTIVITY; ROOM-TEMPERATURE; STABILIZATION; DISORDER; TA; NB;

D O I：

10.2109/jcersj2.19139

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Pyrochlore-type silver tantalate, Ag0.93TaO2.97 center dot 0.94H(2)O (AT), and fluorite-type silver niobate Ag0.41Nb0.59O1.68 (AN), were prepared by ion-exchange reactions and their ion conductivities were measured from 25 to 240 degrees C. The total conductivities (ionic + electrical) at 240 degrees C of AT and AN reached 4.00 x 10(-3) and 9.03 x 10(-4)S/cm, respectively. The activation energy of AT was 0.61 eV and AN showed non-linear behavior with activation energies of 0.52 eV at temperatures less than 120 degrees C and 0.33 eV at temperatures greater than 120 degrees C. The crystal structures of AT and AN were maintained from 25 to 240 degrees C. (C) 2020 The Ceramic Society of Japan. All rights reserved.

引用

页码：46 / 50

页数：5

共 50 条

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