M Josse, O Bidault, F Roulland, E Castel, A Simon… - Solid state sciences, 2009 - Elsevier
Several Niobium oxides of formula Ba2LnFeNb4O15 (Ln= La, Pr, Nd, Sm, Eu, Gd) with the
“tetragonal tungsten bronze”(TTB) structure have been synthesised by conventional solid …