1. Laboratorio de Estudios Crystalográficos, IACT (CSIC-UGR), Avenida de las Palmeras, 4. 18100
Armilla, Granada, Spain
2. Institute of Science and Technology for Ceramics (ISTEC), National Research
Council (CNR), Via Granarolo 64, 48018 Faenza (RA), Italy
3. Dipartimento di Scienze della
Salute, Università del Piemonte Orientale “A.Avogadro”, Via Solaroli 17, 28100 Novara, Italy