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Isomorphous substitutions of rare earth elements for calcium in synthetic hydroxyapatites.

Inorganic chemistry

Ardanova LI, Get'man EI, Loboda SN, Prisedsky VV, Tkachenko TV, Marchenko VI, Antonovich VP, Chivireva NA, Chebishev KA, Lyashenko AS.
PMID: 20957990
Inorg Chem. 2010 Nov 15;49(22):10687-93. doi: 10.1021/ic1015127. Epub 2010 Oct 19.

Polycrystalline hydroxyapatites Ca(10-x)REE(x)(PO(4))(6)(OH)(2-x)O(x) were synthesized and studied by X-ray powder diffraction, infrared absorption, diffuse-reflectance spectroscopy, and thermogravimetry. The solubility limits x(max) of rare earth elements (REE) in Ca hydroxyapatites decreases with an increasing REE atomic number from x(max) =...

Isomorphous Substitution of Rare-Earth Elements in Lacunary Apatite Pb8Na2(PO4)6.

Inorganic chemistry

Get'man EI, Loboda SN, Ignatov AV, Prisedsky VV, Abdul Jabar MA, Ardanova LI.
PMID: 26871754
Inorg Chem. 2016 Mar 07;55(5):2165-73. doi: 10.1021/acs.inorgchem.5b02571. Epub 2016 Feb 12.

The substitution of rare-earth elements (REEs) for Pb in the lacunary apatite Pb8Na2(PO4)6 with void structural channels was studied by means of powder X-ray diffraction (including the Rietveld refinement), scanning electron microscopy, energy-dispersive X-ray microanalysis, and IR spectroscopy and...

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