Orthorhombic electron-paramagnetic-resonance spectrum of U3+ in SrF2

E. D. Dahlberg, T. D. Black

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An EPR spectrum with orthorhombic symmetry of U3+ in SrF2 has been investigated. The principal axes and characteristic values of the g-tensor ellipsoid were determined. Twelve equivalent, yet distinguishable, spectra were resolved. The 12X axes lie in {110} planes and are 15° from <110> directions. The Y axes lie in the same {110} planes 90° from the corresponding X axes (i.e., ± 15° from <100> directions). The 12Z axes were found to be in the <110> directions perpendicular to the {110} plane which contains the corresponding X and Y axes. These principal axes were determined to within ± 0.5°. The principal g values are gx=1.3276±0.0005, gy=2.88±0.01, and gz=3.183±0.002. A rotating sample holder which facilitated this investigation will be discussed briefly.

Original languageEnglish (US)
Pages (from-to)3756-3759
Number of pages4
JournalPhysical Review B
Issue number9
StatePublished - Jan 1 1974


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