Swift-heavy ion irradiation response and annealing behavior of A2TiO5 (A = Nd, Gd, and Yb)

Park, Sulgiye; Tracy, Cameron L.; Zhang, Fuxiang; Palomares, Raul I.; Park, Changyong; Trautmann, Christina; Lang, Maik; Mao, Wendy L.; Ewing, Rodney C.

doi:10.1016/j.jssc.2017.09.028

Title: Swift-heavy ion irradiation response and annealing behavior of A₂TiO₅ (A = Nd, Gd, and Yb)

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Abstract

The structural responses of A₂BO₅ (A = Nd, Gd, and Yb; B = Ti) compositions irradiated by high-energy Au ions (2.2 GeV) were investigated using transmission electron microscopy, synchrotron X-ray diffraction and Raman spectroscopy. The extent of irradiation-induced amorphization depends on the size of the A-site cation, with smaller lanthanides having less susceptibility to the accumulation of radiation damage. In the track-overlapping regime, complete amorphization is observed in all three compounds, despite the ability of Yb₂TiO₅ to incorporate a great deal of structural disorder into its initial defect-fluorite structure (Fm-3m). This is attributed to the high cation radius ratio (A:B = 2:1), which reduces the stability of the structure upon ion irradiation. The fully-amorphized samples were subsequently isochronally heated at temperature intervals from 100 °C to 850 °C. X-ray diffraction analysis indicated a similar damage recovery process in Nd₂TiO₅ and Gd₂TiO₅, where both compositions recover their original structures (Pnma) at 850 °C. In contrast, Yb2TiO5 exhibited recrystallization of a metastable, non-equilibrium orthorhombic phase at ~ 550 °C, prior to a transformation to the stable defect-fluorite phase (Fm-3m) at 625 °C. In conclusion, these compositional variations in radiation tolerance and thermal recovery processes are described in terms of the energetics ofmore »« less

Authors:

Park, Sulgiye ^[1]; Tracy, Cameron L. ^[1]; Zhang, Fuxiang ^[2]; Palomares, Raul I. ^[3]; Park, Changyong ^[4]; Trautmann, Christina ^[5]; Lang, Maik ^[3]; Mao, Wendy L. ^[6]; Ewing, Rodney C. ^[1]

Stanford Univ., CA (United States). Dept. of Geological Sciences
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
Univ. of Tennessee, Knoxville, TN (United States). Dept. of Nuclear Engineering
Carnegie Inst. of Washington, Argonne, IL (United States). Geophysical Lab., High Pressure Collaborative Access Team (HPCAT)
GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany); Technische Univ. Darmstadt (Germany)
Stanford Univ., CA (United States). Dept. of Geological Sciences; SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES)

Publication Date:: 2017-09-28

Research Org.:: Energy Frontier Research Centers (EFRC) (United States). Materials Science of Actinides (MSA); SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1426170

Alternate Identifier(s):: OSTI ID: 1549229

Grant/Contract Number:: AC02-76SF00515; SC0001089; AC02-06CH1135; NA0001974; FG02-99ER45775; FC03-03NA00144

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Solid State Chemistry

Additional Journal Information:: Journal Volume: 258; Journal Issue: C; Journal ID: ISSN 0022-4596

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Ion irradiation; High temperature; Radiation response; Ion tracks

Citation Formats


                    Park, Sulgiye, Tracy, Cameron L., Zhang, Fuxiang, Palomares, Raul I., Park, Changyong, Trautmann, Christina, Lang, Maik, Mao, Wendy L., and Ewing, Rodney C. Swift-heavy ion irradiation response and annealing behavior of A2TiO5 (A = Nd, Gd, and Yb).  United States: N. p., 2017. 
Web.  doi:10.1016/j.jssc.2017.09.028.

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                    Park, Sulgiye, Tracy, Cameron L., Zhang, Fuxiang, Palomares, Raul I., Park, Changyong, Trautmann, Christina, Lang, Maik, Mao, Wendy L., & Ewing, Rodney C. Swift-heavy ion irradiation response and annealing behavior of A2TiO5 (A = Nd, Gd, and Yb).  United States.  https://doi.org/10.1016/j.jssc.2017.09.028

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                    Park, Sulgiye, Tracy, Cameron L., Zhang, Fuxiang, Palomares, Raul I., Park, Changyong, Trautmann, Christina, Lang, Maik, Mao, Wendy L., and Ewing, Rodney C. Thu .  
"Swift-heavy ion irradiation response and annealing behavior of A2TiO5 (A = Nd, Gd, and Yb)".  United States.  https://doi.org/10.1016/j.jssc.2017.09.028.  https://www.osti.gov/servlets/purl/1426170.

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@article{osti_1426170,

  title        = {Swift-heavy ion irradiation response and annealing behavior of A2TiO5 (A = Nd, Gd, and Yb)},

  author       = {Park, Sulgiye and Tracy, Cameron L. and Zhang, Fuxiang and Palomares, Raul I. and Park, Changyong and Trautmann, Christina and Lang, Maik and Mao, Wendy L. and Ewing, Rodney C.},

  abstractNote = {The structural responses of A2BO5 (A = Nd, Gd, and Yb; B = Ti) compositions irradiated by high-energy Au ions (2.2 GeV) were investigated using transmission electron microscopy, synchrotron X-ray diffraction and Raman spectroscopy. The extent of irradiation-induced amorphization depends on the size of the A-site cation, with smaller lanthanides having less susceptibility to the accumulation of radiation damage. In the track-overlapping regime, complete amorphization is observed in all three compounds, despite the ability of Yb2TiO5 to incorporate a great deal of structural disorder into its initial defect-fluorite structure (Fm-3m). This is attributed to the high cation radius ratio (A:B = 2:1), which reduces the stability of the structure upon ion irradiation. The fully-amorphized samples were subsequently isochronally heated at temperature intervals from 100 °C to 850 °C. X-ray diffraction analysis indicated a similar damage recovery process in Nd2TiO5 and Gd2TiO5, where both compositions recover their original structures (Pnma) at 850 °C. In contrast, Yb2TiO5 exhibited recrystallization of a metastable, non-equilibrium orthorhombic phase at ~ 550 °C, prior to a transformation to the stable defect-fluorite phase (Fm-3m) at 625 °C. In conclusion, these compositional variations in radiation tolerance and thermal recovery processes are described in terms of the energetics of disordering during the damage and recrystallization processes.},

  doi          = {10.1016/j.jssc.2017.09.028},

  journal      = {Journal of Solid State Chemistry},

  number       = C,

  volume       = 258,

  place        = {United States},

  year         = {2017},

  month        = {9}

}

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Title: Swift-heavy ion irradiation response and annealing behavior of A2TiO5 (A = Nd, Gd, and Yb)

Abstract

Citation Formats

Title: Swift-heavy ion irradiation response and annealing behavior of A₂TiO₅ (A = Nd, Gd, and Yb)