Amorphization in Gd2Ti2O7 and CaZrTi2O7 irradiated with 3 MeV argon ions

Weber, W. J.; Hess, N. J.; Maupin, G. D.

doi:10.1016/0168-583x(92)95021-i

Amorphization in Gd₂Ti₂O₇ and CaZrTi₂O₇ irradiated with 3 MeV argon ions

Conference · Mon Jun 24 04:00:00 EDT 1991 · Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms

DOI:https://doi.org/10.1016/0168-583x(92)95021-i· OSTI ID:5748395

Weber, W. J. ^[1]; Hess, N. J. ^[1]; Maupin, G. D. ^[1]

Pacific Northwest Laboratory (PNL), Richland, WA (United States)

Irradiation of Gd₂Ti₂O₇ and CaZrTi₂O₇ with 3 MeV Ar⁺ ions results in the simultaneous expansion of the unit-cell volume and radiation-induced amorphization. The damage cross sections for amorphization, which were determined hy X-ray diffraction, are 0.023 nm² and 0.014 nm², respectively. These damage cross sections are relatively low and suggest some inherent resistance of these structures to amorphization, in agreement with previous studies. Transmission electron microscopy and electron diffraction confirmed the amorphous character of both materials at high fluences. Raman spectroscopy indicated a decrease in scattered intensity with ion fluence for the Raman-active vibrational modes of Gd₂Ti₂O₇ and CaZrTi₂O₇. In the case of Gd₂Ti₂O₇, increases in both linewidth and wavenumher with ion fluence also were observed.

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Research Organization:: Pacific Northwest Laboratory (PNL), Richland, WA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

DOE Contract Number:: AC06-76RL01830

OSTI ID:: 5748395

Report Number(s):: PNL-SA--19422; CONF-910646--1; ON: DE91014857

Conference Information:: Journal Name: Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms Journal Issue: 1-4 Journal Volume: 65

Country of Publication:: United States

Language:: English

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Amorphization in Gd2Ti2O7 and CaZrTi2O7 irradiated with 3 MeV argon ions

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Amorphization in Gd₂Ti₂O₇ and CaZrTi₂O₇ irradiated with 3 MeV argon ions