Details

Autor(en) / Beteiligte

• Howard, Christopher J.
• Zhang, Zhaoming

Titel

Structure for perovskites with layered ordering of A-site cations

Ist Teil von

• Acta crystallographica. Section B, Structural science, 2004-04, Vol.60 (2), p.249-251

Ort / Verlag

5 Abbey Square, Chester, Cheshire CH1 2HU, England: Munksgaard International Publishers

Erscheinungsjahr

2004

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The structure of La1/3NbO3 is that of a perovskite with La3+ cations ordered into alternate layers of perovskite A‐sites. This is the description of a tetragonal structure and yet the room‐temperature structure shows an orthorhombic distortion. The structure of La2/3TiO3 shows similar features. It has been recognized only very recently that the ortho­rhombic distortion in both these compounds is due to octahedral tilting. It seems clear from the literature that Ce2/3TiO3, Pr2/3TiO3, Nd2/3TiO3 and Ce1/3NbO3 adopt the same structure. Structures of other perovskites, such as Ln2/3TiO3, Ln1/3NbO3 and Ln1/3TaO3 (Ln = lanthanoid), when orthorhombically distorted, may be similar.