论文信息 - The crystal structure of A-Ce2O3☆

The crystal structure of A-Ce2O3☆

Abstract A single-crystal structure determination of Ce2O3 has been carried out (two-circle diffractometer, Mo Kα radiation, R value 2.9% for 614 unique reflections). The results are in perfect agreement with Pauling's model of the A-type sesquioxides and with the neutron powder diffraction data known for La2O3 and Nd2O3. There is no indication of the so-called micro-twinning which was found 20 years ago by means of single crystals of La2O3 and Nd2O3.

H. Bärnighausen | G. Schiller | H. Bärnighausen | G. Schiller

[1] H. Müller-Buschbaum,et al. Zur Struktur der A‐Form der Sesquioxide der Seltenen Erden. Strukturuntersuchungen an La2O3 , 1965 .

[2] R. D. Shannon. Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides , 1976 .

[3] P. Aldebert,et al. Etude par diffraction neutronique des structures de haute temperature de La2O3 et Nd2O3 , 1979 .

[4] P. Caro. OM4 Tetrahedra linkages and the cationic group (M0)nn+ in rare earth oxides and oxysalts , 1968 .

[5] J. Boucherle,et al. Refinement of the Nd2O3 structure and determination of the neutron scattering length of neodymium , 1975 .