Actinide monochalcogenides

O. Vogt and K. Mattenberger, Magnetic measurements on rare earth and actinide monopnictides and monochalcogenides 301... 

Haessler, M., De Novion, C.-H., Damien, D., Electronic stracture of mixed uranium-thorium monochalcogenides, Plutonium 1975 and other actinides, Proc. Symp. Baden Baden, Germany, Sept. 10-13, 1975, pp.649-657, (1976). Cited on page 306. 

Fig. 2. Lattice parameters of Bl-type lanthanide and actinide compounds at ambient conditions, (a) Actinide monocarbides. Monocarbides are not known for the heavier actinides and for the lanthanides, (b) Monopnictides. Note the regular decrease with Z for lanthanide compounds (exception CeN). The lattice parameters of actinide compounds, in contrast, go through a minimum in the region Pa to Pu. See also sect. 4. (c) Monochalcogenides. Note the regular decrease with Z for lanthanide compounds (exception divalent lanthanides). The lattice parameters of actinide compounds, in contrast, %o through a minimum in the region Pa to Pu. See also sect. 4. ( ) monoxides of actinides only observed as surface layers or stabilized by impurities.

Fig. 18. Isothermal bulk moduli of Bl-type compounds of the lanthanides and actinides, (a) Monopnictides with P, As, Sb, and Bi. (b) Monochalcogenides with S, Se, and Te.

Fig. 20. Pressure of upstroke transition versus Z for Bl-type phases of lanthanide and actinide compounds, (a) Monopnictides. (b) Monochalcogenides. Mononitrides and monoxides are not included because only isolated data are available. Indications of crystal structures in the graphs mark transitions to structures other than B2. Downward arrows for ThBi and ThTe indicate theoretical transition to B2 at negative...

Figures 20 and 21 compare the transition pressures of AnX compounds and of some LnX compounds. In particular, fig. 21 gives the dependence of the transition pressures on the cation-anion radius ratio at ambient pressure. This ratio is in general between 0.41 and 0.73 for Bl-type compounds. In the actinide monopnictides and monochalcogenides, as well as in the lanthanide monotellurides, the transition pressure is seen to increase with decreasing rdv/. This even includes a few of the...

MAGNETIC MEASUREMENTS ON RARE EARTH AND ACTINIDE MONOPNICTIDES AND MONOCHALCOGENIDES... 

RARE EARTH AND ACTINIDE MONOPNICTIDES AND MONOCHALCOGENIDES 313 and Tf are known. For a ferromagnet all we know is ... 

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