排序方式: 共有68条查询结果,搜索用时 31 毫秒
11.
A. Boeuf R. Caciuffo J.M. Fournier L. Manes J. Rebizant E. Roudaut F. Rustichelli 《Solid State Communications》1984,52(4):451-453
A powder neutron diffraction study has been carried out on 239PuN, which was reported to be antiferromagnetic below T = 13 K. No magnetic ordering has been detected at 4K, the limit of the magnetic ordering which could be detected being μord = 0.25μB per Pu atom. Moreover a neutron scattering length determination of 239Pu was performed which gave a value of b239Pu = (0.81 ± 0.05) × 10-12 cm at neutron wavelength . 相似文献
12.
13.
Abstract Neptunium and plutonium monosulfides were studied under high pressure up to ~60 GPa using a diamond anvil cell in an energy dispersive X-ray diffraction facility. The compounds, of cubic rock salt structure type at ambient pressure, do not show any crystallographic phase transition in the domain of investigation. From the pressure-volume relationship, we determined bulk moduli of 92 and 120 GPa with pressure derivatives of 4.6 and 4.1 for NpS and PUS respectively. 相似文献
14.
Hiess A Stunault A Colineau E Rebizant J Wastin F Caciuffo R Lander GH 《Physical review letters》2008,100(7):076403
By using single crystals and polarized neutrons, we have measured the orbital and spin components of the microscopic magnetization in the paramagnetic state of NpCoGa(5) and PuCoGa(5). The microscopic magnetization of NpCoGa(5) agrees with that observed in bulk susceptibility measurements and the magnetic moment has spin and orbital contributions as expected for intermediate coupling. In contrast, for PuCoGa(5), which is a superconductor with a high transition temperature, the microscopic magnetization in the paramagnetic state is small, temperature-independent, and significantly below the value found with bulk techniques at low temperatures. The orbital moment dominates the magnetization. 相似文献
15.
16.
17.
J. Rebizant M. R. Spirlet P. P. Barthélemy J. F. Desreux 《Journal of inclusion phenomena and macrocyclic chemistry》1987,5(4):505-513
A dimeric lanthanide cryptate was obtained by the addition of an excess of cryptand (2.2.1) to a slightly hydrated solution of the monomeric praseodymium (2.2.1) perchlorate complex in acetonitrile. This new lanthanide compound is centrosymmetric and displays the space groupP21/n. The encryptated metal ions are nine-coordinated, they are bonded to all the heteroatoms of a (2.2.1) ligand and they are linked to each other by two -hydroxo bridges. The hydroxyl groups are relegating the cryptands to both end of the dimer and the praseodymium ions are less effectively accomodated in the macrocylic internal cavities than in the case of the monomeric Pr(2.2.1) complex. The formation of both the monomeric and the dimeric lanthanide complexes is readily observed by proton NMR.
Supplementary data relevant to this article are deposited with the British Library Lending Division as Supplementary Publication No. 82050 (24 pages).Presented at the Fourth International Symposium on Inclusion Phenomena and the Third International Symposium on Cyclodextrins, Lancaster, U.K., 20–25 July 1986. 相似文献
18.
Christos Apostolidis Dr. Bernd Schimmelpfennig Dr. Nicola Magnani Dr. Patric Lindqvist‐Reis Dr. Olaf Walter Dr. Richard Sykora Dr. Alfred Morgenstern Dr. Eric Colineau Dr. Roberto Caciuffo Prof. Dr. Reinhardt Klenze Dr. Richard G. Haire Dr. Jean Rebizant Dr. Frank Bruchertseifer Dr. Thomas Fanghänel Prof. Dr. 《Angewandte Chemie (International ed. in English)》2010,49(36):6343-6347
19.
20.