Details

Autor(en) / Beteiligte

• Asabina, E A
• Shatunov, V E
• Pet'kov, VI
• Borovikova, EYu
• Kovalskii, A M

Titel

Synthesis and study of Cd sub(0.5 + x) M sub(x)Zr sub(2-x) (PO sub(4)) sub(3) (M = Mg, Co, Mn) phosphates

Ist Teil von

• Russian journal of inorganic chemistry, 2016-07, Vol.61 (7), p.811-816

Erscheinungsjahr

2016

Link zum Volltext

Quelle

SpringerLink (Online service)

Beschreibungen/Notizen

• New phosphates Cd sub(0.5 + x )M sub( x )Zr sub(2-x )(PO sub(4)) sub(3) (M = Mg, Co, Mn) have been prepared by sol-gel method. The formation of limited solid solutions Cd sub(0.5 + x )M sub( x )Zr sub(2-x )(PO sub(4)) sub(3) of the NaZr sub(2)(PO sub(4)) sub(3) (NZP) structural type, 0 less than or equal to x less than or equal to 0.6 for М = Mg and 0 less than or equal to х less than or equal to 0.3 for M = Co and Mn, has been found using X-ray diffraction, IR spectroscopy, and electron microprobe analysis. The distribution of cations in the 2+ oxidation state over crystallographic positions of the NZP structure has been shown in the phosphate CdMg sub(0.5)Zr sub(1.5)(PO sub(4)) sub(3). It has been found that half of framework-forming octahedral positions in the structure of the latter are occupied by Zr4+ cations and the other half are randomly occupied by Zr super(4+) and Cd super(2+) ions. The Cd super(2+) and Mg super(2+) ions alternately occupy the positions of structure cavities. The thermal expansion of CdMg sub(0.5)Zr sub(1.5)(PO sub(4)) sub(3) in a temperature range of 25-800 degree C has been studied. The phosphate is found to be among the medium expanding substances.