In memoriam. Orlando Zelaya-Angel’s contributions in Superficies y Vacío

Abstract

Professor Orlando Zelaya Angel was an outstanding member of the research community on Solid State Physics. He served as President to the Sociedad Mexicana de Ciencia de Superficies y Vacío (SMCSyV; currently Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales – SMCTSM), for the period 1995-1996. Professor Zelaya formed many researchers in Mexico, who continue developing research, either in Mexico, in their countries of origin, or abroad.
 Throughout the evolution of Superficies y Vacío, Professor Zelaya, contributed with sixteen articles on subjects ranging from thin films for optoelectronic applications, through hard coatings and studies on the process for production of Tortillas; covering most of his research areas of interest. Here is a subject-chronological compilation of the abstracts to his articles in Superficies y Vacío, after a year of his departure.

Effects of thermal annealing on analog resistive switching behavior in bilayer HfO2/ZnO synaptic devices: the role of ZnO grain boundaries

“…The primary growth direction of ZnO is generally known as the (0001) direction in the hexagonal prism crystal structure because the (0001) plane has the lowest surface free energy. 43 The crystal orientation of the ZnO film was favored in the Z -axis direction and appeared in the (002) crystal plane. The diffraction peaks of the HfO 2 /3 nm ZnO films on annealing temperature were not observed in the XRD results (see Fig.…”