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Radiation Damage of LaMgAl 11 O 19 and CeMgAl 11 O 19 Magnetoplumbite
Author(s) -
Men Danju,
Patel Maulik K.,
Usov Igor O.,
Pivin J. C.,
Porter John R.,
Mecartney Martha L.
Publication year - 2013
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.12503
Subject(s) - irradiation , ion , transmission electron microscopy , analytical chemistry (journal) , materials science , chemistry , nuclear chemistry , physics , nanotechnology , chromatography , nuclear physics , organic chemistry
Studies of radiation damage in magnetoplumbite‐type LaMgAl 11 O 19 and CeMgAl 11 O 19 are reported. Ion irradiation was conducted on ceramic composites containing a LaMgAl 11 O 19 phase at 500°C with 10 MeV Au + ions and on ceramic composites containing CeMgAl 11 O 19 phase at 800°C with 92 MeV Xe + ions. The radiation response of these similar LnMgAl 11 O 19 (Ln = La and Ce) hexaaluminate magnetoplumbite phases was evaluated using transmission electron microscopy ( TEM ) and X ‐ray diffraction ( XRD ). LaMgAl 11 O 19 was amorphized by 10 MeV Au ions with swelling of the structure within an approximate 2 μm radiation depth from the irradiation surface. CeMgAl 11 O 19 did not amorphize after 92 MeV Xe ‐ion irradiation, but ion track damage contrast is seen in approximately 5 μm of the irradiated depth. SRIM Monte‐Carlo simulations of nuclear displacements correlate with the experimental results.