Representative samples were characterized by XRD with Cu Kα
radiation on a Bruker D8 Advance Diffractometer with Bragg–
Brentano geometry. The XRD patterns were analyzed and refined
by means of the TOPAS 3 software (provided by Bruker), applying
the fundamental parameter approach for peak profile modeling. In
order to check the calculated compositions selected samples were
analyzed by scanning electron microscopy (SEM; Zeiss Supra
55 VP) using energy dispersive X-ray spectroscopy (EDS).