Physics and Astronomy
American Association for the Advancement of Science
Curium lies at the center of the actinide series and has a half-filled shell with seven 5f electrons spatially residing inside its radon core. As a function of pressure, curium exhibits five different crystallographic phases up to 100 gigapascals, of which all but one are also found in the preceding element, americium. We describe here a structure in curium, Cm III, with monoclinic symmetry, space group C2/c, found at intermediate pressures (between 37 and 56 gigapascals). Ab initio electronic structure calculations agree with the observed sequence of structures and establish that it is the spin polarization of curium’s 5f electrons that stabilizes Cm III. The results reveal that curium is one of a few elements that has a lattice structure stabilized by magnetism.
Carleton College does not own the copyright to this work and the work is available through the Carleton College Library following the original publisher's policies regarding self-archiving. For more information on the copyright status of this work, refer to the current copyright holder.
Publisher PDF Archiving
Weisberg, Joel M., Simon Johnston, Barbel Koribalski, and Snezana Stanimirovic., "Discovery of pulsed OH emission stimulated by a pulsar". Science, vol. 309, no. , 2005. Available at: https://doi.org/10.1126/science.1112494. . [Online]. Accessed via Faculty Work. Physics and Astronomy. Carleton Digital Commons. https://digitalcommons.carleton.edu/phys_faculty/7
The definitive version is available at https://doi.org/10.1126/science.1112494