Directly Imaging Interstitial Oxygen in Silicate Apatite

Yaoqing Zhang, Zixue Su, Abul K. Azad, Wuzong Zhou, John Thomas Sirr Irvine

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


Oxygen interstitial defects in silicate apatite have been imaged directly using high-resolution transmission electron microscopy. The accommodation of interstitial oxygen anions in the host lattice network gives rise to larger defective areas than a single oxygen atom, which enables imaging of the extended defect. A new model is proposed to account for excess oxygen and its solubility in apatite that is consistent with neutron diffraction data.
Original languageEnglish
Pages (from-to)316-321
Number of pages6
JournalAdvanced Energy Materials
Issue number3
Publication statusPublished - Mar 2012


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