Defects in Zirconia Nanomaterials Doped with Rare-Earth Oxides

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10288510" target="_blank" >RIV/00216208:11320/14:10288510 - isvavai.cz</a>

Result on the web

<a href="http://przyrbwn.icm.edu.pl/APP/PDF/125/a125z3p21.pdf" target="_blank" >http://przyrbwn.icm.edu.pl/APP/PDF/125/a125z3p21.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.12693/APhysPolA.125.760" target="_blank" >10.12693/APhysPolA.125.760</a>

Result language

angličtina

Original language name

Defects in Zirconia Nanomaterials Doped with Rare-Earth Oxides

Original language description

Positron lifetime and coincidence Doppler broadening measurements on ZrO2+3 mol.% RE2O3 (RE = Eu, Gd, Lu) nanopowders and ceramics obtained by sintering these nanopowders are reported. The initial nanopowders were prepared by a co-precipitation techniqueand exhibited a mean particle size of approximate to 15 nm. The nanopowders were calcined and pressure-compacted. All compacted nanopowders exhibited the prevailing tetragonal phase with at most 15% of the monoclinic admixture. Positrons in compacted nanopowders were found to annihilate almost exclusively at grain boundaries: (i) vacancy-like misfit defects along grain boundaries and (ii) larger defects situated at intersections of grain boundaries (triple points). In nanopowders, a small portion of positrons formed positronium in pores between crystallites. Sintering of nanopowders at 1500 degrees C caused a substantial grain growth and formation of ceramics. Sintering-induced grain growth led to a disappearance of the triple points a

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

—

Project

<a href="/en/project/GAP108%2F11%2F1396" target="_blank" >GAP108/11/1396: Effect of substitutional elements and grain boundaries on properties of nanocrystalline zirconia-based materials</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

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

Name of the periodical

Acta Physica Polonica A

ISSN

0587-4246

e-ISSN

—

Volume of the periodical

125

Issue of the periodical within the volume

3

Country of publishing house

PL - POLAND

Number of pages

4

Pages from-to

760-763

UT code for WoS article

000339826300022

EID of the result in the Scopus database

—