Abstract
EPR measurements have been made on Ag2+ in sodium beta -alumina single crystals. Silver is introduced into the conduction plane as Ag + by exchange with Na+ in amounts varying from 5 to 26%: Ag2+ is produced by X-ray irradiation at 300K. EPR results indicate that the Ag2+ occupies two sites of orthorhombic symmetry in the conduction plane. The measured g-values are gx=2.0230(2), g y=2.0678(15), gz=2.2730(5) and gx=2.015(4), gy=2.0580(15), gz=2.2335(4) where x, y, z are parallel to a*, c, a axes respectively. The hyperfine interaction with the 107Ag nuclei is unresolved and estimated to be less than 1 mT. No motional effects are observed. Models are discussed for the two sites which involve an excess of O2- ions in the conduction plane.
| Original language | English |
|---|---|
| Article number | 023 |
| Pages (from-to) | 3881-3887 |
| Number of pages | 7 |
| Journal | Journal of Physics C: Solid State Physics |
| Volume | 11 |
| Issue number | 18 |
| DOIs | |
| Publication status | Published - 1 Dec 1978 |
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Keywords
- sodium beta -alumina
- EPR measurements
- silver
- X-ray irradiation
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EPR of Ag2+ in β-alumina. / Barklie, R. C.; O'Donnell, K.; Henderson, B.
In: Journal of Physics C: Solid State Physics, Vol. 11, No. 18, 023, 01.12.1978, p. 3881-3887.Research output: Contribution to journal › Article
TY - JOUR
T1 - EPR of Ag2+ in β-alumina
AU - Barklie, R. C.
AU - O'Donnell, K.
AU - Henderson, B.
PY - 1978/12/1
Y1 - 1978/12/1
N2 - EPR measurements have been made on Ag2+ in sodium beta -alumina single crystals. Silver is introduced into the conduction plane as Ag + by exchange with Na+ in amounts varying from 5 to 26%: Ag2+ is produced by X-ray irradiation at 300K. EPR results indicate that the Ag2+ occupies two sites of orthorhombic symmetry in the conduction plane. The measured g-values are gx=2.0230(2), g y=2.0678(15), gz=2.2730(5) and gx=2.015(4), gy=2.0580(15), gz=2.2335(4) where x, y, z are parallel to a*, c, a axes respectively. The hyperfine interaction with the 107Ag nuclei is unresolved and estimated to be less than 1 mT. No motional effects are observed. Models are discussed for the two sites which involve an excess of O2- ions in the conduction plane.
AB - EPR measurements have been made on Ag2+ in sodium beta -alumina single crystals. Silver is introduced into the conduction plane as Ag + by exchange with Na+ in amounts varying from 5 to 26%: Ag2+ is produced by X-ray irradiation at 300K. EPR results indicate that the Ag2+ occupies two sites of orthorhombic symmetry in the conduction plane. The measured g-values are gx=2.0230(2), g y=2.0678(15), gz=2.2730(5) and gx=2.015(4), gy=2.0580(15), gz=2.2335(4) where x, y, z are parallel to a*, c, a axes respectively. The hyperfine interaction with the 107Ag nuclei is unresolved and estimated to be less than 1 mT. No motional effects are observed. Models are discussed for the two sites which involve an excess of O2- ions in the conduction plane.
KW - sodium beta -alumina
KW - EPR measurements
KW - silver
KW - X-ray irradiation
UR - http://www.scopus.com/inward/record.url?scp=0242602601&partnerID=8YFLogxK
U2 - 10.1088/0022-3719/11/18/023
DO - 10.1088/0022-3719/11/18/023
M3 - Article
VL - 11
SP - 3881
EP - 3887
JO - Journal of Physics C: Solid State Physics
JF - Journal of Physics C: Solid State Physics
SN - 0022-3719
IS - 18
M1 - 023
ER -