Template-free hydrothermal preparation of IR-blue light upconverting NaYF4: Yb, Eu phosphors Cristina Ruiz-Santaquiteria; David G. Calatayud; Kevin Gutiérrez; Marina Villegas; Marco Peiteado; Teresa Jardiel;

Two-step doping approach releasing the piezoelectric response of BiFeO3 bulk ceramics co-doped with titanium and samarium Carlos Gumiel; Mara S. Bernardo; Pablo G. Villanueva; David G. Calatayud; Marco Peiteado; Teresa Jardiel;

Thin film processing of multiferroic BiFeO3: From sophistication to simplicity. A review Carlos Gumiel; David G. Calatayud;