- Library Home /
- Search Collections /
- Open Collections /
- Browse Collections /
- UBC Theses and Dissertations /
- NMR-ON studies of europium vanadate and hcp cobalt
Open Collections
UBC Theses and Dissertations
UBC Theses and Dissertations
NMR-ON studies of europium vanadate and hcp cobalt Willetts, Martin
Abstract
The quadrupole interaction on Eu³⁺ in EuVO₄ was investigated using low temperature nuclear orientation. The interaction strength, P, on the ¹⁵²Eu nuclei was measured as 1±4 MHz, with a total cooling time of 24 hours. This low value is attributed to either the high symmetry of the europium lattice postion, or a very long (greater than one day) spin lattice relaxation time. The NMR frequency of ⁵⁹Co was measured at low temperature, using the first observation of thermometric NMR in a conductor. The motive was to measure the frequency pulling in cobalt metal, and the resonance was observed to be 218.4(4) MHz at 70mK, which is 1.5 MHz below the 1 K value. The frequency pulling effect on the nuclear resonance is due to the Suhl-Nakamura interaction between the nuclear spins.
Item Metadata
| Title |
NMR-ON studies of europium vanadate and hcp cobalt
|
| Creator | |
| Publisher |
University of British Columbia
|
| Date Issued |
1995
|
| Description |
The quadrupole interaction on Eu³⁺ in EuVO₄ was investigated using low temperature
nuclear orientation. The interaction strength, P, on the ¹⁵²Eu nuclei was measured as
1±4 MHz, with a total cooling time of 24 hours. This low value is attributed to either
the high symmetry of the europium lattice postion, or a very long (greater than one day)
spin lattice relaxation time.
The NMR frequency of ⁵⁹Co was measured at low temperature, using the first observation
of thermometric NMR in a conductor. The motive was to measure the frequency
pulling in cobalt metal, and the resonance was observed to be 218.4(4) MHz at 70mK,
which is 1.5 MHz below the 1 K value. The frequency pulling effect on the nuclear
resonance is due to the Suhl-Nakamura interaction between the nuclear spins.
|
| Extent |
2833019 bytes
|
| Genre | |
| Type | |
| File Format |
application/pdf
|
| Language |
eng
|
| Date Available |
2009-01-24
|
| Provider |
Vancouver : University of British Columbia Library
|
| Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
|
| DOI |
10.14288/1.0085123
|
| URI | |
| Degree | |
| Program | |
| Affiliation | |
| Degree Grantor |
University of British Columbia
|
| Graduation Date |
1995-11
|
| Campus | |
| Scholarly Level |
Graduate
|
| Aggregated Source Repository |
DSpace
|
Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.