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- 저자 : X.F. Bian (검색결과 4 건)
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Variation of magnetic properties with different annealed temperatures in the Ni_3[Fe(CN)_6]_2ㆍXH_2O
M. Liu,X.F. Bian,Y.F. Xia,Z. Bao,H.S. Wu,M.X. Xu 한국물리학회 2011 Current Applied Physics Vol.11 No.3
Molecular magnet nickel(II) hexacyanoferrate(III) powder Ni_3[Fe(CN)_6]_2ㆍXH_2O was prepared by coprecipitation method. The coprecipitated powder was annealed in vacuum at different temperatures of 140,and 160 ℃. Water molecules contained in Prussian blue analogues were removed by heating. The annealing of Ni^II ferricyanide induced an inner charge transfer from Ni^II towards Fe^III to form the mixed valence system Ni(II) Ni(III) ferri-ferro-cyanide. Variation of magnetic properties with different annealed temperatures was studied by elemental analysis, powder X-ray diffraction, transmission electron microscopy, Fourier transform infrared, and Mössbauer and magnetization measurements. The differences in magnetic phase transition temperature, coercivity, remanence and effective magnetization are studied. Differences in magnetic properties may be attributed to a partial charge transfer from Ni^II to Fe^III.
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Radiative decay of theψ(2S)into two pseudoscalar mesons
Bai, J. Z.,Ban, Y.,Bian, J. G.,Blum, I.,Chen, A. D.,Chen, G. P.,Chen, H. F.,Chen, H. S.,Chen, J.,Chen, J. C.,Chen, X. D.,Chen, Y.,Chen, Y. B.,Cheng, B. S.,Choi, J. B.,Cui, X. Z.,Ding, H. L.,Dong, L. Y American Physical Society 2003 Physical review. D, Particles and fields Vol.67 No.3
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Effect of Cd-phosphonate complex on the self-assembly structure of colloidal nanorods
Qiao, F.,Xu, W.,Liu, M.,Yang, J.,Cui, X.,Wang, Q.,Bian, J.,Kim, D.H. North-Holland 2016 Materials Letters Vol.180 No.-
A simple approach for finely ordered self-assembling CdSe/CdS nanorods (NRs) on a solid substrate by annealing is introduced. With appropriate Cd-phosphonate complex, NRs align into either parallel arrays or vertical ones depending on the concentration of NRs. The analysis of self-assembled NRs arrays in response to changes in NR concentration showed that the presence of Cd-phosphonate complex does influence the resulting self-assembled nanostructures. The melted Cd-phosphonate complex surrounding NRs during thermal annealing process serves as a media for NRs to self-assemble into an ordered structure. The surface photovoltage (SPV) spectra of vertically aligned NRs shows much stronger response compared to that of parallel aligned ones, which is caused by the direct pathways for charge transport and more effective photo-induced charge transport in the vertically aligned NRs structure. The result suggests that assembly direction and structure of CdSe/CdS NRs can be achieved by selecting the appropriate Cd-phosphonate complex in the synthesis and purification process.
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