Next Article in Journal
Hybrid Disila-Crown Ethers as Hosts for Ammonium Cations: The O–Si–Si–O Linkage as an Acceptor for Hydrogen Bonding
Previous Article in Journal
Interface Enthalpy-Entropy Competition in Nanoscale Metal Hydrides
Article Menu
Issue 1 (March) cover image

Export Article

Open AccessArticle
Inorganics 2018, 6(1), 14; doi:10.3390/inorganics6010014

96Zr Tracer Diffusion in AZrO3 (A = Ca, Sr, Ba)

Department of Materials Science and Engineering, NTNU Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
Research Center for Functional Materials, National Institute for Materials Science, Tsukuba 305-0044, Japan
Author to whom correspondence should be addressed.
Received: 30 November 2017 / Revised: 30 December 2017 / Accepted: 9 January 2018 / Published: 15 January 2018
View Full-Text   |   Download PDF [2394 KB, uploaded 16 January 2018]   |  


Cation tracer diffusion in polycrystalline AZrO3 (A = Ca, Sr, Ba) perovskites was studied at 1300–1500 °C in air using the stable isotope 96Zr. Thin films of 96ZrO2 were deposited on polished ceramic pellets by drop casting of an aqueous precursor solution containing the tracer. The pellets were subjected to thermal annealing, and the isotope depth profiles were measured by secondary ion mass spectrometry. Two distinct regions with different slopes in the profiles enabled to assess separately the lattice and grain boundary diffusion coefficients using Fick’s second law and Whipple–Le Clair’s equation. The cation diffusion along grain boundaries was 4–5 orders of magnitude faster than the corresponding lattice diffusion. The magnitude of the diffusivity of Zr4+ was observed to increase with decreasing size of the A-cation in AZrO3, while the activation energy for the diffusion was comparable 435 ± 67, 505 ± 56, and 445 ± 45 and kJ·mol−1 for BaZrO3, SrZrO3, and CaZrO3, respectively. Several diffusion mechanisms for Zr4+ were considered, including paths via Zr- and A-site vacancies. The Zr4+ diffusion coefficients reported here were compared to previous data reported on B-site diffusion in perovskites, and Zr4+ diffusion in fluorite-type compounds. View Full-Text
Keywords: cation diffusion; perovskite oxides; Zr tracer diffusion cation diffusion; perovskite oxides; Zr tracer diffusion

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Supplementary material

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Sažinas, R.; Sakaguchi, I.; Einarsrud, M.-A.; Grande, T. 96Zr Tracer Diffusion in AZrO3 (A = Ca, Sr, Ba). Inorganics 2018, 6, 14.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Inorganics EISSN 2304-6740 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top