The magnetism of the uranium chalcogenides

Holden, T. M.; Jackman, J.A.; Buyers, W. J. L.; Hughes, K.M.; Collins, M. F.; DuPlessis, P. de V.; Vogt, O.

doi:10.1016/0304-8853(87)90550-6

Cited by 14 publications

(2 citation statements)

References 6 publications

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“…The complex electronic structure of uranium leads to a wide variety of unusual and diverse behavior in the uranium salts UX (X = C, N, P, S, As, Se, Sb, Te, Bi), and therefore the materials in this family have been the subject of many past investigations characterizing their magnetic and vibrational properties [1][2][3][4][5][6][7][8][9][10]. The phonon spectra in the UX systems have been comprehensively studied, however there has been renewed interest in more detailed calculations of their vibrational properties as certain members of the family, including UN and UC, are under active consideration for next generation nuclear fuels [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…The complex electronic structure of uranium leads to a wide variety of unusual and diverse behaviors in the uranium salts UX (X = C, N, P, S, As, Se, Sb, Te, and Bi), and therefore the materials in this family have been the subject of many past investigations characterizing their magnetic and vibrational properties [1][2][3][4][5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Light atom quantum oscillations in UC and US

et al. 2016

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High-energy vibrational scattering in the binary systems UC and US is measured using time-of-flight inelastic neutron scattering. A clear set of well-defined peaks equally separated in energy is observed in UC, corresponding to harmonic oscillations of the light C atoms in a cage of heavy U atoms. The scattering is much weaker in US and only a few oscillator peaks are visible. We show how the difference between the materials can be understood by considering the neutron scattering lengths and masses of the lighter atoms. Monte Carlo ray tracing is used to simulate the scattering, with near quantitative agreement with the data in UC, and some differences with US. The possibility of observing anharmonicity and anisotropy in the potentials of the light atoms is investigated in UC. Overall, the observed data is well accounted for by considering each light atom as a single atom isotropic quantum harmonic oscillator.

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