ADVANCES IN THE PREPARATION OF SAMPLES FOR ACTINIDE SOLID STATE RESEARCH
Since Actinide 81 the main progress in the preparation of samples for solid state actinide research was realized in the growth of single crystals of plutonium compounds. Plutonium metal is obtained by the metallothermic reduction of the oxide or of the carbide. It is refined by selective evaporation and vacuum melting. The plutonium compounds are prepared by direct synthesis from the elements using non contaminating techniques. Single crystals of plutonium monopnictides and monochalcogenides are grown using the mineralization technique. Pulling from the melt by the Czochralski technique is used to grow single crystals of congruently melting compounds (Laves phases). Single crystals of PuAs, PuSb, PuBi, PuS, PuSe, PuTe, Pu-xY-(1-x)Sb, PuSb-(1-x)Te-x, as large as 1 cm**3 can be obtained. The crystals are cleaved, oriented and encapsulated for physical property measurements. Specific heat, resistivity, magnetization, elastic, polarized and inelastic neutron scattering measurement are made in different laboratories of the European Communities on the prepared single crystals.
Bibliographic Reference: ACTINIDES '85, AIX-EN-PROVENCE (FRANCE), SEPT. 2-6, 1985 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 32435 ORA
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Record Number: 1989124044800 / Last updated on: 1987-01-01
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