Gómez-Pérez, AlejandroPrado Gonjal, Jesús De La PazMuñoz Gil, DanielAndrada Chacón, AdriánSánchez Benítez, Francisco JavierMorán Miguélez, EmilioAzcondo, MaríaTeresaAmador, UlisesSchmidt, Rainer2024-01-222024-01-222015Gómez-Pérez, Alejandro, et al. «Anti-Site Disorder and Physical Properties in Microwave Synthesized RE 2 Ti 2 O 7 (RE = Gd, Ho) Pyrochlores». RSC Advances, vol. 5, n.o 104, 2015, pp. 85229-41. https://doi.org/10.1039/C5RA07796F.10.1039/c5ra07796fhttps://hdl.handle.net/20.500.14352/94361In this work we report on the microwave assisted synthesis of nano-sized Gd2Ti2O7 (GTO) and Ho2Ti2O7 (HTO) powders from the RE2Ti2O7 pyrochlore family (RE ¼ rare earth). Synchrotron X-ray powder diffraction was used to study RE–Ti cationic anti-site defects with concentrations that decrease in both samples with increasing temperature starting from 1100 C, and the defects disappear at 1400 ºC. SQUID magnetometry measurements revealed that GTO shows a predominantly anti-ferromagnetic structure, whereas HTO exhibits magnetic saturation and a ferromagnetic component at low temperature. Impedance spectroscopy data revealed strongly increased ionic oxygen vacancy conduction in HTO ceramic pellets as compared to GTO, which may be associated with a higher degree of oxygen vacancy disorder. This argument was supported by Raman spectroscopy data.engjournal article2046-2069https://doi.org/10.1039/C5RA07796Fmetadata only access546Química inorgánica (Química)23 Química