PALS study on the defect structure of yttria-stabilized zirconia

被引：18

作者：

Damonte, L. C.

Taylor, M. A.

Desimoni, J.

Runco, J.

机构：

[1] Natl Univ La Plata, Fac Ciencias Exactas, Dept Fis, RA-1900 La Plata, Argentina

[2] Consejo Nacl Invest Cient & Tecn, IFLP, RA-1900 La Plata, Argentina

来源：

RADIATION PHYSICS AND CHEMISTRY | 2007年 / 76卷 / 02期

关键词：

D O I：

10.1016/j.radphyschem.2006.03.046

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Powders of stabilized ZrO2-8 mol% Y2O3 (YSZ) have been obtained by mechanical milling in zirconia vials. The samples were characterized by X-ray diffraction (XRD). Positron annihilation lifetime (PALS) measurements were performed to investigate the lattice defects originated by the incorporation of yttria and those mechanically induced. The XRD results indicate the formation of tetragonal YSZ solid solution. PALS results indicate that positron trapping occurs at different kinds of defects such as vacancy-like defects, grain boundary and associated defects. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：248 / 251

页数：4

共 20 条

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Brandt W., 1983, POSITRON SOLID STATE

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