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| 2. |
- Kienzler, B., et al.
(författare)
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Swedish-German actinide migration experiment at ASPO hard rock laboratory
- 2003
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Ingår i: Journal of Contaminant Hydrology. - 0169-7722 .- 1873-6009. ; 61:04-jan, s. 219-233
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Tidskriftsartikel (refereegranskat)abstract
- Within the scope of a bilateral cooperation between Svensk Karnbranslehantering (SKB) and Forschungszentrum Karlsruhe, Institut fur Nukleare Entsorgung (FZK-INE), an actinide migration experiment is currently being performed at the Aspo Hard Rock Laboratory (HRL) in Sweden. This paper covers laboratory and in situ investigations on actinide migration in single-fractured granite core samples. For the in situ experiment, the CHEMLAB 2 probe developed by SKB was used. The experimental setup as well as the breakthrough of inert tracers and of the actinides Am, Np and Pu are presented. The breakthrough curves of inert tracers were analyzed to determine hydraulic properties of the fractured samples. Postmortem analyses of the solid samples were performed to characterize the flow path and the sorbed actinides. After cutting the cores, the abraded material was analyzed with respect to sorbed actinides. The slices were scanned optically to visualize the flow path. Effective volumes and inner surface areas were measured. In the experiments, only breakthrough of Np(V) was observed. In each experiment, the recovery of Np(V) was less than or equal to40%. Breakthrough of Am(III) and Pu(IV) as well as of Np(IV) was not observed.
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| 3. |
- Azad, A.K., Eriksson, S.-G., Ivanov, S.A., Rundlöf, H., Eriksen, J. Mathieu, R., Svedlindh, P.
(författare)
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Structural and magnetic characterization of the double perovskites AA´MnWO6 (AA´= Ba2, SrBa, Sr2, SrCa and Ca2)
- 2002
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Ingår i: Ferroelectrics. ; 269, s. 105-110
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Tidskriftsartikel (refereegranskat)
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| 4. |
- Azad, A. K., S.- G. Eriksson, S. A. Ivanov, H. Rundlöf, J. Eriksen, R. Mathieu, and P. Svedlindh
(författare)
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Synthesis, Structure and Magnetic properties of Ca2-xSrxMnWO6 (x = 0.0, 0.5, 1.0, 1.5, 2.0)
- 2003
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Ingår i: Materials Science Forum. ; , s. 375-
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Konferensbidrag (refereegranskat)
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| 5. |
- Azad, A.K., S.-G. Eriksson, S.A. Ivanov, R. Mathieu, P. Svedlindh, J. Eriksen, H. Rundlöf
(författare)
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Synthesis, structural and magnetic characterisation of the double perovskite A2MnMoO6 (A=Ba, Sr)
- 2003
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Ingår i: Materials Research Bulletin. ; 37, s. 1797-
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Tidskriftsartikel (refereegranskat)
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| 6. |
- Azad, Abul Kalam, 1966, et al.
(författare)
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Synthesis, structural and magnetic characterisation of the double perovskite A(2)MnMoO(6) (A = Ba, Sr)
- 2004
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Ingår i: Journal of Alloys and Compounds. - 0925-8388. ; 364:1-2, s. 77-82
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Tidskriftsartikel (refereegranskat)abstract
- A study of the crystallographic structure and magnetic properties of the double perovskites Ba2MnMoO6 and Sr2MnMoO6 in polycrystalline form has been carried out by means of neutron powder diffraction (NPD) and magnetization measurements. The Rietveld analysis of room temperature data shows that the Mn2+ and Mo6+ ions are B-site ordered, i.e. the structure is a NaCl-type ordered double perovskite. Ba2MnMoO6 crystallizes in the cubic space group Full-size image (<1 K) (a=8.1680(1)) and Sr2MnMoO6 crystallizes in the space group P42/n (a=7.9575(5), c=7.9583(9)). Bond valence sum (BVS) calculation revealed that these compounds have the valency pair of {Mn2+(3d5;t32ge2g), Mo6+(4d0)}. The magnetic measurements suggest that these compounds transform to an antiferromagnetic state below 10 K.
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| 7. |
- Azad, AK, et al.
(författare)
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Nuclear and magnetic structure of Ca2MnWO6: A neutron powder diffraction study
- 2001
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Ingår i: MATERIALS RESEARCH BULLETIN. - 0025-5408. ; 36:13-14, s. 2485-2496
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Tidskriftsartikel (refereegranskat)abstract
- The nuclear and magnetic structures of the double provskite compound Ca2MnWO6 have been determined by neutron powder diffraction. Rietveld refinement shows that the compound adopts a monoclinic crystal structure with P2(1)/n symmetry. Magnetic refinement
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| 8. |
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| 9. |
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| 10. |
- Azad, AK, et al.
(författare)
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Synthesis, crystal structure, and magnetic characterization of the double perovskite Ba2MnWO6
- 2001
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Ingår i: MATERIALS RESEARCH BULLETIN. - 0025-5408. ; 36:12, s. 2215-2228
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Tidskriftsartikel (refereegranskat)abstract
- The double perovskite Ba2MnWO6 has been prepared as a pure powder by a conventional solid-state reaction process and studied by X-ray, neutron powder diffraction (NPD), magnetization, and AC susceptibility measurements. NPD, magnetization, and AC suscepti
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