Published 1980 | Version v1
Journal article Metadata-only

Faulted defect aggregates in neutron-irradiated MgAl2O4 spinel

Creators

  • 1. Case Western Reserve Univ., Cleveland, OH (USA)
  • 2. Los Alamos Scientific Lab., NM (USA)

Description

Single crystals of stoichiometric MgAl2O4 spinel were neutron-irradiated to fluences (> 0.1 MeV) of 2.8 x 1025 n m-2 (approximately 1.5 dpa) at 1015 K and approximately 1.9 x 1026 n m-2 (approximately 10 dpa) at 925 K and 1100 K. The resulting point defect aggregates were investigated using bright-field and weak-beam dark-field transmission electron microscopy. For the higher dose, faulted interstitial Frank dislocation loops were found on (110) and (111) planes with b = 1/4 < 110 > (cation fault) and b = 1/6 < 111 > (anion + cation fault) respectively. The latter preserves stoichiometry only for a randomized cation distribution

Additional details

Publishing Information

Journal Title
J. Phys. (Paris), Colloq.
Journal Issue
no.C-6
Series
J. Phys. (Paris), Colloq.
ISSN
0449-1947

Conference

Title
3. Europhysics topical conference on lattice defects in ionic crystals.
Dates
17 - 21 Sep 1979.
Place
Canterbury, UK.

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
12575248
Subject category
S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
HIGH TEMPERATURE; NEUTRONS; PHYSICAL RADIATION EFFECTS; SCREW DISLOCATIONS; SPINELS; VERY HIGH TEMPERATURE
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; ALUMINIUM COMPOUNDS; ALUMINIUM OXIDES; BARYONS; CHALCOGENIDES; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; DISLOCATIONS; ELEMENTARY PARTICLES; FERMIONS; HADRONS; LINE DEFECTS; MAGNESIUM COMPOUNDS; MAGNESIUM OXIDES; MINERALS; NUCLEONS; OXIDES; OXYGEN COMPOUNDS; RADIATION EFFECTS