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Title: Accumulation and Recovery of Disorder in Au2+-Irradiated Cd2Nb2O7

Abstract

Cadmium niobate pyrochlore (Cd2Nb2O7) single crystals have been irradiated at 150, 300, 450 and 600 K using 1.0 MeV Au2+ ions over fluences ranging from 0.01 to 3.5 ions/nm2. The relative disorder on the Cd sublattice in the as-irradiated Cd2Nb2O7 has been analyzed based on in-situ 3.0 MeV He+ Rutherford backscattering spectrometry along the <100>-axial channeling direction. The results show that the crystal can be readily amorphized under the Au2+ irradiation at or below 450 K; however, the relative Cd disorder tends to saturate at 600 K, and full amorphization does not occur at doses up to 5 dpa. Isochronal annealing (20 min) also has been performed at temperatures from 180 to 295 K for samples irradiated at 150 K. Thermal recovery of the disorder has been observed below room temperature.

Authors:
; ;
Publication Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
876882
Report Number(s):
PNNL-SA-42976
3448; KC0201020; TRN: US0601428
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms; Journal Volume: 241; Journal Issue: 1-4
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CADMIUM OXIDES; NIOBIUM OXIDES; GOLD IONS; IRRADIATION; PYROCHLORE; RUTHERFORD BACKSCATTERING SPECTROSCOPY; THERMAL RECOVERY; ORDER-DISORDER TRANSFORMATIONS; Ion irradiation; lattice disorder; ion channeling; pyrochlores; Environmental Molecular Sciences Laboratory

Citation Formats

Jiang, Weilin, Weber, William J., and Boatner, Lynn A. Accumulation and Recovery of Disorder in Au2+-Irradiated Cd2Nb2O7. United States: N. p., 2005. Web. doi:10.1016/j.nimb.2005.07.046.
Jiang, Weilin, Weber, William J., & Boatner, Lynn A. Accumulation and Recovery of Disorder in Au2+-Irradiated Cd2Nb2O7. United States. doi:10.1016/j.nimb.2005.07.046.
Jiang, Weilin, Weber, William J., and Boatner, Lynn A. Thu . "Accumulation and Recovery of Disorder in Au2+-Irradiated Cd2Nb2O7". United States. doi:10.1016/j.nimb.2005.07.046.
@article{osti_876882,
title = {Accumulation and Recovery of Disorder in Au2+-Irradiated Cd2Nb2O7},
author = {Jiang, Weilin and Weber, William J. and Boatner, Lynn A.},
abstractNote = {Cadmium niobate pyrochlore (Cd2Nb2O7) single crystals have been irradiated at 150, 300, 450 and 600 K using 1.0 MeV Au2+ ions over fluences ranging from 0.01 to 3.5 ions/nm2. The relative disorder on the Cd sublattice in the as-irradiated Cd2Nb2O7 has been analyzed based on in-situ 3.0 MeV He+ Rutherford backscattering spectrometry along the <100>-axial channeling direction. The results show that the crystal can be readily amorphized under the Au2+ irradiation at or below 450 K; however, the relative Cd disorder tends to saturate at 600 K, and full amorphization does not occur at doses up to 5 dpa. Isochronal annealing (20 min) also has been performed at temperatures from 180 to 295 K for samples irradiated at 150 K. Thermal recovery of the disorder has been observed below room temperature.},
doi = {10.1016/j.nimb.2005.07.046},
journal = {Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms},
number = 1-4,
volume = 241,
place = {United States},
year = {Thu Dec 01 00:00:00 EST 2005},
month = {Thu Dec 01 00:00:00 EST 2005}
}