Ion irradiation of ternary pyrochlores

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Materials Research Society
Synthetic pyrochlore samples Y2Ti2-xSnxO7 (x=0.4, 0.8, 1.2, 1.6), Nd2Zr2O7, Nd2Zr1.2Ti0.8O7, and La1.6Y0.4Hf2O7, were irradiated in-situ using the IVEM-TANDEM microscope facility at the Argonne National Laboratory. The critical temperatures for amorphisation have revealed a dramatic increase in tolerance with increasing Sn content for the Y2Ti2-xSnxO7 series. This change has also found to be linear with increasing Sn content. Nd2Zr1.2Ti0.8O7 and La1.6Y0.4Hf2O7 were both found to amorphise, while Nd2Zr2O7 was found to be stable to high doses (2.5x10^15 ions cm-2). The observed results are presented with respect to previously published results for irradiation stability predictions and structural disorder. © Materials Research Society 2009
Pyrochlore, Irradiation, Ions, Zirconium, Hafnium, Neodymium
Whittle, K. R., Smith, K. L., Blackford, M. G., Redfern, S. A. T., Harvey, E. J., Zaluzec, N. J., & Lumpkin, G. R. (2008). Ion irradiation of ternary pyrochlores. Paper presented to the 2008 MRS Fall Meeting, 1st – 5th December 2008. Boston, Massachusetts, United States of America: Hynes Convention Center. In K. E. Sickafus, A. Navrotsky, S.R. Phillpot (Eds.), Structure/property relationships in fluorite-derivative compound, December 1-5, 2008, Boston, Massachusetts, USA, (Vol. 1122, pp. 48-53). doi:10.1557/PROC-1122-O08-03