The Experts below are selected from a list of 168 Experts worldwide ranked by ideXlab platform
M. L. Liu - One of the best experts on this subject based on the ideXlab platform.
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synthesis crystal structure Mossbauer Spectrum and magnetic susceptibility of new pyrochlore compound candfe1 2nb3 2o7
Journal of Solid State Chemistry, 2000Co-Authors: X.h. Zhao, S.k. Ruan, M. L. Liu, Hui Xiong, Y.w Song, Ming Jin, Y.q. JiaAbstract:Abstract A new pyrochlore compound CaNdFe1/2Nb3/2O7 was synthesized by a wet chemical method. The Rietveld method is used to determine the crystal structure of the compound. The crystal structure of CaNdFe1/2Nb3/2O7 belongs to cubic system with a cubic face-centered cell and a=1.04138 nm. Mossbauer Spectrum of the 57Fe nucleus in the compound shows the absence of the internal magnetic field in the compound and the low spin state of the trivalent iron ion. The temperature dependence of the magnetic susceptibility indicates the paramagnetic property of CaNdFe1/2Nb3/2O7. There may be translation from the FeIII ion in a low spin state to the Fe3+ ion in a high spin state in the compound when the temperature is higher.
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Synthesis, Crystal Structure, Mossbauer Spectrum, and Magnetic Susceptibility of New Pyrochlore Compound CaNdFe1/2Nb3/2O7
Journal of Solid State Chemistry, 2000Co-Authors: X.h. Zhao, S.k. Ruan, M. L. Liu, M.z. Jin, Hui Xiong, Y.w Song, Y.q. JiaAbstract:Abstract A new pyrochlore compound CaNdFe1/2Nb3/2O7 was synthesized by a wet chemical method. The Rietveld method is used to determine the crystal structure of the compound. The crystal structure of CaNdFe1/2Nb3/2O7 belongs to cubic system with a cubic face-centered cell and a=1.04138 nm. Mossbauer Spectrum of the 57Fe nucleus in the compound shows the absence of the internal magnetic field in the compound and the low spin state of the trivalent iron ion. The temperature dependence of the magnetic susceptibility indicates the paramagnetic property of CaNdFe1/2Nb3/2O7. There may be translation from the FeIII ion in a low spin state to the Fe3+ ion in a high spin state in the compound when the temperature is higher.
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151Eu and57Fe Mössbauer effect studies of magnetic interactions in europium transition element oxides solution
Hyperfine Interactions, 1992Co-Authors: Xuewu Liu, Mingzhi Jin, Weixing Zhan, M. L. LiuAbstract:The solid state solutions of europium transition element oxides Eu (Fe0.8M0.2)O3 (M=Sc,Cr,Mn,Co) are synthesized. The X-ray diffraction of the compound shows that all the compounds possess the perovskite structures. Both the151Eu Mossbauer spectra and the57Fe Mossbauer spectra are measured. The hyperfine magnetic field and non-axisymmetric electric field gradient are observed in the151Eu Mossbauer Spectrum. The57Fe Mossbauer Spectrum shows that there are four components of hyperfine fields corresponding to four kinds of different neighbours of the Fe ion.
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Mössbauer spectra of gadolinite and aeschynite
Hyperfine Interactions, 1992Co-Authors: Mingzhi Jin, M. L. Liu, Xuewu Liu, Keja TaoAbstract:The Mossbauer spectra of the Natural gadolinite and aeschynite at 297K and 81K were measured. The Mossbauer Spectrum of the gadolinite consists of one Fe3+ doublet and two Fe2+ doublets, and the multiple Fe2+ doublets in the Spectrum of the gadolinite were relating to the next nearest neighbour effect. The Mossbauer Spectrum of the aeschynite is composed of one Fe3+ doublet and one Fe2+ doublet, and this result is in agreement with crystal structure determination.
Y.q. Jia - One of the best experts on this subject based on the ideXlab platform.
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synthesis crystal structure Mossbauer Spectrum and magnetic susceptibility of new pyrochlore compound candfe1 2nb3 2o7
Journal of Solid State Chemistry, 2000Co-Authors: X.h. Zhao, S.k. Ruan, M. L. Liu, Hui Xiong, Y.w Song, Ming Jin, Y.q. JiaAbstract:Abstract A new pyrochlore compound CaNdFe1/2Nb3/2O7 was synthesized by a wet chemical method. The Rietveld method is used to determine the crystal structure of the compound. The crystal structure of CaNdFe1/2Nb3/2O7 belongs to cubic system with a cubic face-centered cell and a=1.04138 nm. Mossbauer Spectrum of the 57Fe nucleus in the compound shows the absence of the internal magnetic field in the compound and the low spin state of the trivalent iron ion. The temperature dependence of the magnetic susceptibility indicates the paramagnetic property of CaNdFe1/2Nb3/2O7. There may be translation from the FeIII ion in a low spin state to the Fe3+ ion in a high spin state in the compound when the temperature is higher.
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Synthesis, Crystal Structure, Mossbauer Spectrum, and Magnetic Susceptibility of New Pyrochlore Compound CaNdFe1/2Nb3/2O7
Journal of Solid State Chemistry, 2000Co-Authors: X.h. Zhao, S.k. Ruan, M. L. Liu, M.z. Jin, Hui Xiong, Y.w Song, Y.q. JiaAbstract:Abstract A new pyrochlore compound CaNdFe1/2Nb3/2O7 was synthesized by a wet chemical method. The Rietveld method is used to determine the crystal structure of the compound. The crystal structure of CaNdFe1/2Nb3/2O7 belongs to cubic system with a cubic face-centered cell and a=1.04138 nm. Mossbauer Spectrum of the 57Fe nucleus in the compound shows the absence of the internal magnetic field in the compound and the low spin state of the trivalent iron ion. The temperature dependence of the magnetic susceptibility indicates the paramagnetic property of CaNdFe1/2Nb3/2O7. There may be translation from the FeIII ion in a low spin state to the Fe3+ ion in a high spin state in the compound when the temperature is higher.
Peter B Hitchcock - One of the best experts on this subject based on the ideXlab platform.
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studies of the 24 electron nido 5 vertex clusters m η4 p2c2but2 m ge pb sn synthesis and characterization of m η4 p2c2but2 m ge pb sn η4 p2c2but2 w co 5 n n 1 2 and i2gep2c2but2 and the Mossbauer Spectrum of sn η4 p2c2but2
Organometallics, 2003Co-Authors: Matthew D Francis, Peter B HitchcockAbstract:The group 14 1,3-diphosphacyclobutadienyl complexes [M(η 4 -P 2 C 2 Bu t 2)] (M = Ge, Pb) have been synthesized by the reaction of [Zr(η 5 -C 5 H 5 ) 2 (PCBu t ) 2 ] with GeCl 2 .(dioxanel or PbI 2 and fully characterized by multinuclear NMR spectroscopy and single-crystal X-ray diffraction studies. Structurally they can be viewed as 24-electron nido-5-vertex clusters. The significant solvent dependence of the 2 0 7 Pb chemical shift of [Pb(η 4 -P 2 C 2 Bu t 2)] suggests the possibility of formation of an adduct with Lewis bases. The oxidative addition of [Ge(η 4 -P 2 C 2 Bu t 2)] with I 2 has been studied as well as the reactivity of the previously reported tin analogue [Sn(η 4 -P 2 C 2 Bu t 2)] with [W(CO) 5 (THF)] in which it coordinates via its P lone pairs. The Mossbauer Spectrum of [Sn(η 4 -P 2 C 2 Bu t 2)] is reported and shows an isomer shift consistent with it being an organo tin(II) complex.
X.h. Zhao - One of the best experts on this subject based on the ideXlab platform.
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synthesis crystal structure Mossbauer Spectrum and magnetic susceptibility of new pyrochlore compound candfe1 2nb3 2o7
Journal of Solid State Chemistry, 2000Co-Authors: X.h. Zhao, S.k. Ruan, M. L. Liu, Hui Xiong, Y.w Song, Ming Jin, Y.q. JiaAbstract:Abstract A new pyrochlore compound CaNdFe1/2Nb3/2O7 was synthesized by a wet chemical method. The Rietveld method is used to determine the crystal structure of the compound. The crystal structure of CaNdFe1/2Nb3/2O7 belongs to cubic system with a cubic face-centered cell and a=1.04138 nm. Mossbauer Spectrum of the 57Fe nucleus in the compound shows the absence of the internal magnetic field in the compound and the low spin state of the trivalent iron ion. The temperature dependence of the magnetic susceptibility indicates the paramagnetic property of CaNdFe1/2Nb3/2O7. There may be translation from the FeIII ion in a low spin state to the Fe3+ ion in a high spin state in the compound when the temperature is higher.
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Synthesis, Crystal Structure, Mossbauer Spectrum, and Magnetic Susceptibility of New Pyrochlore Compound CaNdFe1/2Nb3/2O7
Journal of Solid State Chemistry, 2000Co-Authors: X.h. Zhao, S.k. Ruan, M. L. Liu, M.z. Jin, Hui Xiong, Y.w Song, Y.q. JiaAbstract:Abstract A new pyrochlore compound CaNdFe1/2Nb3/2O7 was synthesized by a wet chemical method. The Rietveld method is used to determine the crystal structure of the compound. The crystal structure of CaNdFe1/2Nb3/2O7 belongs to cubic system with a cubic face-centered cell and a=1.04138 nm. Mossbauer Spectrum of the 57Fe nucleus in the compound shows the absence of the internal magnetic field in the compound and the low spin state of the trivalent iron ion. The temperature dependence of the magnetic susceptibility indicates the paramagnetic property of CaNdFe1/2Nb3/2O7. There may be translation from the FeIII ion in a low spin state to the Fe3+ ion in a high spin state in the compound when the temperature is higher.
Matthew D Francis - One of the best experts on this subject based on the ideXlab platform.
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studies of the 24 electron nido 5 vertex clusters m η4 p2c2but2 m ge pb sn synthesis and characterization of m η4 p2c2but2 m ge pb sn η4 p2c2but2 w co 5 n n 1 2 and i2gep2c2but2 and the Mossbauer Spectrum of sn η4 p2c2but2
Organometallics, 2003Co-Authors: Matthew D Francis, Peter B HitchcockAbstract:The group 14 1,3-diphosphacyclobutadienyl complexes [M(η 4 -P 2 C 2 Bu t 2)] (M = Ge, Pb) have been synthesized by the reaction of [Zr(η 5 -C 5 H 5 ) 2 (PCBu t ) 2 ] with GeCl 2 .(dioxanel or PbI 2 and fully characterized by multinuclear NMR spectroscopy and single-crystal X-ray diffraction studies. Structurally they can be viewed as 24-electron nido-5-vertex clusters. The significant solvent dependence of the 2 0 7 Pb chemical shift of [Pb(η 4 -P 2 C 2 Bu t 2)] suggests the possibility of formation of an adduct with Lewis bases. The oxidative addition of [Ge(η 4 -P 2 C 2 Bu t 2)] with I 2 has been studied as well as the reactivity of the previously reported tin analogue [Sn(η 4 -P 2 C 2 Bu t 2)] with [W(CO) 5 (THF)] in which it coordinates via its P lone pairs. The Mossbauer Spectrum of [Sn(η 4 -P 2 C 2 Bu t 2)] is reported and shows an isomer shift consistent with it being an organo tin(II) complex.