Abstract
The radiation susceptibility of garnet structure types (A3B2(XO4)3, Ia3d, Z = 8) has been examined by 1.0 MeV Kr2+ irradiation with in situ transmission electron microscopy over the temperature range of 50-1070 K. The target garnets included five natural garnets: almandine, andradite, pyrope, grossular and spessartine, and five synthetic garnets incorporating various contents of actinides. The synthetic garnets were silicates (N-series) and ferrate-aluminates (G-series). The critical amorphization temperature (Tc), above which amorphization does not occur, were determined to be 1050 K for N77, 1130 K for N56, 1100 K for G3, 890 K for G4 and 1030 K for andradite. Tc of the synthetic garnets increased with increasing mass density of the target and as the electronic-to-nuclear stopping power ratio decreased. During ion irradiation of the G3 garnet at a temperature of 1023 K near the Tc, nano-crystals were produced in which the unit-cell parameter of the original garnet was halved (∼0.64 nm) as a result of a radiation-induced recrystallization process, without evidence for ordering of the cations.
| Original language | English |
|---|---|
| Pages (from-to) | 177-187 |
| Number of pages | 11 |
| Journal | Journal of Nuclear Materials |
| Volume | 303 |
| Issue number | 2-3 |
| DOIs | |
| Publication status | Published - Jun 1 2002 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Materials Science(all)
- Nuclear Energy and Engineering
Cite this
Ion irradiation-induced amorphization and nano-crystal formation in garnets. / Utsunomiya, S.; Wang, L. M.; Yudintsev, S.; Ewing, R. C.
In: Journal of Nuclear Materials, Vol. 303, No. 2-3, 01.06.2002, p. 177-187.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Ion irradiation-induced amorphization and nano-crystal formation in garnets
AU - Utsunomiya, S.
AU - Wang, L. M.
AU - Yudintsev, S.
AU - Ewing, R. C.
PY - 2002/6/1
Y1 - 2002/6/1
N2 - The radiation susceptibility of garnet structure types (A3B2(XO4)3, Ia3d, Z = 8) has been examined by 1.0 MeV Kr2+ irradiation with in situ transmission electron microscopy over the temperature range of 50-1070 K. The target garnets included five natural garnets: almandine, andradite, pyrope, grossular and spessartine, and five synthetic garnets incorporating various contents of actinides. The synthetic garnets were silicates (N-series) and ferrate-aluminates (G-series). The critical amorphization temperature (Tc), above which amorphization does not occur, were determined to be 1050 K for N77, 1130 K for N56, 1100 K for G3, 890 K for G4 and 1030 K for andradite. Tc of the synthetic garnets increased with increasing mass density of the target and as the electronic-to-nuclear stopping power ratio decreased. During ion irradiation of the G3 garnet at a temperature of 1023 K near the Tc, nano-crystals were produced in which the unit-cell parameter of the original garnet was halved (∼0.64 nm) as a result of a radiation-induced recrystallization process, without evidence for ordering of the cations.
AB - The radiation susceptibility of garnet structure types (A3B2(XO4)3, Ia3d, Z = 8) has been examined by 1.0 MeV Kr2+ irradiation with in situ transmission electron microscopy over the temperature range of 50-1070 K. The target garnets included five natural garnets: almandine, andradite, pyrope, grossular and spessartine, and five synthetic garnets incorporating various contents of actinides. The synthetic garnets were silicates (N-series) and ferrate-aluminates (G-series). The critical amorphization temperature (Tc), above which amorphization does not occur, were determined to be 1050 K for N77, 1130 K for N56, 1100 K for G3, 890 K for G4 and 1030 K for andradite. Tc of the synthetic garnets increased with increasing mass density of the target and as the electronic-to-nuclear stopping power ratio decreased. During ion irradiation of the G3 garnet at a temperature of 1023 K near the Tc, nano-crystals were produced in which the unit-cell parameter of the original garnet was halved (∼0.64 nm) as a result of a radiation-induced recrystallization process, without evidence for ordering of the cations.
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UR - http://www.scopus.com/inward/citedby.url?scp=0036608597&partnerID=8YFLogxK
U2 - 10.1016/S0022-3115(02)00802-4
DO - 10.1016/S0022-3115(02)00802-4
M3 - Article
AN - SCOPUS:0036608597
VL - 303
SP - 177
EP - 187
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
IS - 2-3
ER -