TY - JOUR
T1 - Probing the effect of radiation damage on the structure of rare-earth phosphates
AU - Rafiuddin, Mohamed Ruwaid
AU - Grosvenor, Andrew P.
N1 - Funding Information:
The Natural Sciences and Engineering Research Council (NSERC) of Canada funded this project through a discovery grant awarded to APG. MRR thanks the University of Saskatchewan for financial support. The Canadian Foundation for Innovation (CFI) is thanked for providing funds to purchase the PANalytical Empyrean powder X-ray diffractometer that was used in this project. Mr. Jack Hendriks is thanked for carrying out the ion-implantation studies using the Tandetron accelerator located at Interface Science Western, University of Western Ontario. J.R. Hayes and E.R. Aluri from the Department of Chemistry, University of Saskatchewan are thanked for help in the collection of the XANES spectra presented in this study. Dr. Yongfeng Hu, Ms. Aimee MacLennan, and Dr. Lucia Zuin of the CLS are thanked for their support in carrying out XANES experiments at beamlines 06B1-1 and 11ID-2. The CLS is supported by NSERC, the National Research Council of Canada, the Canadian Institutes of Health Research, the Province of Saskatchewan, Western Economic Diversification Canada, and the University of Saskatchewan.
Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.
Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2015/12/25
Y1 - 2015/12/25
N2 - Synthetic analogues of naturally occurring monazite (REPO4; RE = La to Gd) and xenotime (RE′PO4; RE′ = Tb to Lu and Y) minerals have been identified as potential wasteforms for nuclear waste. High energy ion-implantation of crystalline materials simulates radiation-induced structural damage and allows for the radiation resistance of a crystal structure to be probed. The structural stability of Au- ion-implanted La1-xYbxPO4 materials was investigated using micro-X-ray diffraction (μ-XRD) and glancing angle X-ray absorption near-edge spectroscopy (GA-XANES) in this study. The long- and short-range order of La1-xYbxPO4 (x = 0, 0.3, 0.7, 1.0) is affected by ion-implantation and, thus, the materials are prone to structural damage. The structures of some members of the La1-xYbxPO4 series (x = 0.7 and 1.0) were observed to partially recover after being implanted with Au- ions to a high dose. The structures of all members of the La1-xYbxPO4 series were observed to recover from damage resulting from ion-implantation after annealing the materials at temperatures ≥300 °C.
AB - Synthetic analogues of naturally occurring monazite (REPO4; RE = La to Gd) and xenotime (RE′PO4; RE′ = Tb to Lu and Y) minerals have been identified as potential wasteforms for nuclear waste. High energy ion-implantation of crystalline materials simulates radiation-induced structural damage and allows for the radiation resistance of a crystal structure to be probed. The structural stability of Au- ion-implanted La1-xYbxPO4 materials was investigated using micro-X-ray diffraction (μ-XRD) and glancing angle X-ray absorption near-edge spectroscopy (GA-XANES) in this study. The long- and short-range order of La1-xYbxPO4 (x = 0, 0.3, 0.7, 1.0) is affected by ion-implantation and, thus, the materials are prone to structural damage. The structures of some members of the La1-xYbxPO4 series (x = 0.7 and 1.0) were observed to partially recover after being implanted with Au- ions to a high dose. The structures of all members of the La1-xYbxPO4 series were observed to recover from damage resulting from ion-implantation after annealing the materials at temperatures ≥300 °C.
KW - Glancing angle XANES
KW - Micro-XRD
KW - Monazite
KW - Radiation-induced structural damage
KW - Wasteform
KW - Xenotime
UR - http://www.scopus.com/inward/record.url?scp=84941774447&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2015.08.276
DO - 10.1016/j.jallcom.2015.08.276
M3 - Article
AN - SCOPUS:84941774447
VL - 653
SP - 279
EP - 289
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
ER -