Cation disorder determined by MAS {sup 27}Al NMR in high dose neutron irradiated spinel

Conference · Sun Dec 31 00:00:00 EST 1995

OSTI ID:10103271

Cooper, E A; Sickafus, K E; Hughes, C D; Earl, W L ^[1]; Hollenberg, G W; Garner, F A ^[2]; Bradt, R C ^[3]

---

1. Los Alamos National Lab., NM (United States)
2. Pacific Northwest Labs., Richland, WA (United States)
3. Univ. of Alabama, Tuscaloosa, AL (United States). Dept. of Metallurgical and Materials Engineering

Spinel (MgAl{sub 2}O{sub 4}) single crystals which had been neutron irradiated to high doses (53-250 dpa) were examined using {sup 27}Al magic angle spinning (MAS) nuclear magnetic resonance (NMR). The sensitivity of this procedure to a specific cation (Al) residing in different crystallographic environments allowed one to determine the distribution of the Al between the two cation sites in the spinel structure. The samples were irradiated at two different temperatures (400 and 750{degrees}C) and various doses. These results indicate that the Al was nearly fully disordered over the two lattice sites after irradiation.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 10103271
• Report Number(s): LA-UR-94-4071; CONF-941144-4; ON: DE95003681; TRN: 95:000371
• Resource Relation: Conference: Fall meeting of the Materials Research Society (MRS),Boston, MA (United States),28 Nov - 9 Dec 1994; Other Information: PBD: [1995]
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
36 MATERIALS SCIENCE
SPINELS
NUCLEAR MAGNETIC RESONANCE
PHYSICAL RADIATION EFFECTS
ALUMINIUM 27
NEUTRON BEAMS
IRRADIATION
CATIONS
MONOCRYSTALS
400600
360605
RADIATION CHEMISTRY
RADIATION EFFECTS