EPR spectra of Fe³⁺ in a natural crystal of brookite have been investigated at X- and Q-band frequencies at room temperature and 573°K. Part of the paramagnetic resonance spectrum observed has been interpreted on the assumption that Fe³⁺occupies eight equivalent Ti⁴⁺ sites in brookite, with four inequivalent orientations..
The spectra show an "intermediate" zero-field splitting at X-band and a "normal" zero field splitting at Q-band frequencies.
The spin Hamiltonian parameters which fit the spectra are the following:
g = 2.002 ± 0.005 .
D = (1170 ± 30) x 10⁻⁴cm⁻¹
E = (330 ± 20) x 10⁻⁴cm⁻¹
[pa + (l/l2)qF]₀₁₀ = (13±10) x 10⁻⁴cm⁻¹
[pa + (l/l2)qF]₁₀₀ = (-13±15) x l0⁻⁴cm⁻¹
[pa + (l/l2)qF]₀₀₁ = (-66±4) x l0⁻⁴cm⁻¹ / Science, Faculty of / Physics and Astronomy, Department of / Graduate
| Identifer | oai:union.ndltd.org:UBC/oai:circle.library.ubc.ca:2429/33269 |
| Date | January 1972 |
| Creators | Rostworowski, Juan Adalberto |
| Publisher | University of British Columbia |
| Source Sets | University of British Columbia |
| Language | English |
| Detected Language | English |
| Type | Text, Thesis/Dissertation |
| 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. |
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