Lookup NU author(s): Dr Stevin Pramana
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The crystal chemistry of the cuprate apatites AI 4AII 6(PO4)6Cu xOy(H)z (A = Ca, Sr and Ba) was investigated by powder X-ray (PXRD) and neutron diffraction (PND) and X-ray photoelectron spectroscopy (XPS). The refined crystal structures confirmed earlier X-ray diffraction studies that showed copper resides in the apatite channels and additionally, located hydrogen. For all materials copper is primarily divalent (Cu2+) but in the calcium and strontium analogues co-exists with minor Cu3+. This is in contrast with a previous work where Cu 1+ and Cu2+ were reported. © The Royal Society of Chemistry 2009.
Author(s): Baikie T, Ng GMH, Madhavi S, Pramana SS, Blake K, Elcombe M, White TJ
Publication type: Article
Publication status: Published
Journal: Dalton Transactions
Print publication date: 14/09/2009
Online publication date: 17/06/2009
ISSN (print): 1477-9226
ISSN (electronic): 1477-9234
Publisher: Royal Society of Chemistry
PubMed id: 19690682
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