V. MaisonneuveEvelyne LeducO. BohnkéM. Leblanc
In Na4/3Ln26/3(SiO4)6(F1/3O2/3)2 (Ln = La, Ce, Gd) apatites, synthesized by hydrothermal and ceramic methods, Na+ and Ce3+ cations are disordered on 4f sites while O2- and F- anions are disordered in the "apatite" channels. The high U33 value of these anions suggests the onset of conductivity at high temperature.
Martin P. HilbersMargita MeiwaldRainer Mattes
A. MommertzaK. DehnickeaJörg Magull
Hisanori YamaneTôru NagasawaMasahiko ShimadaTakumi Endo
R.E. MarshF. Albert CottonWilli Schwotzer