Isovalent and aliovalent cation substitutions in the anion sublattice of whitlockite-type ferroelectrics Ca9RE(VO4)7 with RE =Y and Yb
Vladimir V. Titkov, Sergey Yu. Stefanovich, Dina V. Deyneko, Yury Yu. Dikhtyar, Sergey M. Aksenov, Oksana V. Baryshnikova, Alexey A. Belik, Bogdan I. Lazoryak.