Jump to ContentJump to Main Navigation
Show Summary Details

Zeitschrift für Kristallographie - Crystalline Materials

Editor-in-Chief: Pöttgen, Rainer

Ed. by Antipov, Evgeny / Bismayer, Ulrich / Boldyreva, Elena V. / Huppertz, Hubert / Petrícek, Václav / Tiekink, E. R. T.

12 Issues per year

IMPACT FACTOR increased in 2015: 2.560
Rank 8 out of 26 in category Cristallography in the 2015 Thomson Reuters Journal Citation Report/Science Edition

SCImago Journal Rank (SJR) 2015: 0.827
Source Normalized Impact per Paper (SNIP) 2015: 1.198
Impact per Publication (IPP) 2015: 1.834

See all formats and pricing


Select Volume and Issue


30,00 € / $42.00 / £23.00

Get Access to Full Text

On the nanostructure of radiation-amorphized zircon and pyrochlores: a small-angle x-ray scattering study

Susana Ríos / Christopher M. Martin / Karl R. Whittle
Published Online: 2009-09-25 | DOI: https://doi.org/10.1524/zkri.220.8.748.67082


Nanoscale structural features of amorphous zircon and pyrochlore produced by self-irradiation induced amorphization have been characterized by small-angle X-ray scattering (SAXS). Electron density fluctuations were observed in the untreated samples and studied as a function of annealing temperature (up to 1300 °C). In untreated zircon, density fluctuations were found to have a characteristic length-scale of approximately 1 nanometer diameter. A clear scattering maximum develops at ∼3 nm–1 as a function of the degree of damage, but only for amorphous fractions higher than 70%. For the untreated pyrochlore sample such a strong signal was not observed in the scattering function. As annealing temperature increases, phase segregation is observed in zircon with a clear nucleation at 850 °C of zirconia grains. The SAXS contribution, however, points towards a lower nucleation temperature, ca. 700 °C. In the pyrochlore structure, at temperatures as low as 300 °C the appearance of a first crystalline phase, Ca2Nb2O7, is observed, with the subsequent crystallization of TiO2 at 800 °C. Observed electron density variations are compared between the two structures and discussed in terms of nanoscale phase segregation phenomena.

Received: June 30, 2004

Accepted: September 15, 2004

Published Online: 2009-09-25

Published in Print: 2005-08-01

Citation Information: Zeitschrift für Kristallographie - Crystalline Materials. Volume 220, Issue 8, Pages 748–755, ISSN (Online) 2196-7105, ISSN (Print) 2194-4946, DOI: https://doi.org/10.1524/zkri.220.8.748.67082, September 2009

Comments (0)

Please log in or register to comment.