Positron annihilation studies of zirconia doped with metal cations of different valence

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10189493" target="_blank" >RIV/00216208:11320/13:10189493 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1088/1742-6596/443/1/012026" target="_blank" >http://dx.doi.org/10.1088/1742-6596/443/1/012026</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/443/1/012026" target="_blank" >10.1088/1742-6596/443/1/012026</a>

Result language

angličtina

Original language name

Positron annihilation studies of zirconia doped with metal cations of different valence

Original language description

New results obtained by applying positron annihilation spectroscopy to the investigation of zirconia-based nanomaterials doped with metal cations of different valence are reported. The slow-positron implantation spectroscopy combined with Doppler broadening measurements was employed to study the sintering of pressure-compacted nanopowders of tetragonal yttria-stabilised zirconia (t-YSZ) and t-YSZ with chromia additive. Positronium (Ps) formation in t-YSZ was proven by detecting 3 gamma-annihilations ofortho-Ps and was found to gradually decrease with increasing sintering temperature. A subsurface layer with enhanced 3 gamma-annihilations, compared to the deeper regions, could be identified. Addition of chromia was found to inhibit Ps formation. In addition, first results of positron lifetime measurements on nanopowders of zirconia phase-stabilised with MgO and CeO2 are presented.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JH - Ceramics, fire-proof materials and glass

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Journal of Physics: Conference Series

ISBN

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ISSN

1742-6588

e-ISSN

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Number of pages

4

Pages from-to

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Publisher name

IOP PUBLISHING LTD

Place of publication

BRISTOL

Event location

Bristol

Event date

Aug 19, 2012

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000321739400026