Twin model for orthorhombic perovskites

Bas B. Van Aken, Auke Meetsma, Thomas T. M. Palstra

We present a detailed single crystal x-ray diffraction study of twinned orthorhombic perovskites. The diffraction pattern can be indexed on a $2a_p$x$2a_p$x$2a_p$ lattice, but does…