Exploring the polyvinyl alcohol method for preparing cuprates and manganites

被引：10

作者：

Calleja, A ^{[1
]}

Segarra, M ^{[1
]}

Serradilla, IG ^{[1
]}

Capdevila, XG ^{[1
]}

Fernández, AT ^{[1
]}

Espiell, F ^{[1
]}

机构：

[1] Univ Barcelona, Dept Engn Quim & Met, E-08028 Barcelona, Spain

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2003年 / 23卷 / 09期

关键词：

calcination; (La; Ca); MnO3; oxide superconductors; polyvinyl alcohol; powders : chemical preparation; transition metal oxides; YBCO;

D O I：

10.1016/S0955-2219(02)00362-X

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：

The polyvinyl alcohol route is investigated in the formation of cuprate and manganite ceramics. By evaporation of the nitrate solution containing the stoichiometric quantities of the cations and the PVA, a spongy mass is produced, which upon a single calcination converts into the desired phases. We chose YBa2Cu3Oy, a high temperature superconductor, and La2/3Ca1/3MnO3, a perovskite manganite showing colossal magnetoresistance as case studies for the preparation of technological interesting ceramic powders. XRD is employed to monitor the phase transformation leading to the single phases. Moreover, carbon content in the final powders is measured to assure complete elimination of carbonaceous species. This preliminar study shows that the PVA solution can be a potentially interesting technique to prepare these advanced ceramic powders as compared to classical ceramic methods. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：1369 / 1373

页数：5

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