The Experts below are selected from a list of 195 Experts worldwide ranked by ideXlab platform
T.t. Sasaki - One of the best experts on this subject based on the ideXlab platform.
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synthesis crystal structure and property of the iron rich Tantalum Compounds fe ta 5x8 with x s se
Journal of Alloys and Compounds, 2004Co-Authors: Hiroaki Wada, Hiroshi Nozaki, Akira Sato, K. Takada, T.t. SasakiAbstract:Abstract The phase relations of the Fe–Ta–S system at 1223 K have been examined by sealed silica tube methods and its isothermal section of the phase diagram has been constructed tentatively on the basis of X-ray results. The novel ternary sulfide (Fe,Ta)5S8 (iron-rich intercalation phase Fe0.25(Ta0.5Fe0.5)S2) was found to exist in the iron-rich upper portion of the phase diagram. It crystallizes in the trigonal structures with space group P 3 m1 and the lattice constants of a=3.3656(9) A, c=5.8140(11) A. This compound exhibits a weak ferrimagnetic property with the Curie temperature Tc of 600 K and a semiconducting behaviour with an electric resistivity of 0.135 Ω cm at room temperature. The isomorphous selenide (Fe,Ta)5Se8 gave similar results.
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Synthesis, crystal structure and property of the iron-rich Tantalum Compounds (Fe,Ta)5X8 with X = S, Se
Journal of Alloys and Compounds, 2004Co-Authors: Hiroaki Wada, Hiroshi Nozaki, Akira Sato, K. Takada, T.t. SasakiAbstract:Abstract The phase relations of the Fe–Ta–S system at 1223 K have been examined by sealed silica tube methods and its isothermal section of the phase diagram has been constructed tentatively on the basis of X-ray results. The novel ternary sulfide (Fe,Ta)5S8 (iron-rich intercalation phase Fe0.25(Ta0.5Fe0.5)S2) was found to exist in the iron-rich upper portion of the phase diagram. It crystallizes in the trigonal structures with space group P 3 m1 and the lattice constants of a=3.3656(9) A, c=5.8140(11) A. This compound exhibits a weak ferrimagnetic property with the Curie temperature Tc of 600 K and a semiconducting behaviour with an electric resistivity of 0.135 Ω cm at room temperature. The isomorphous selenide (Fe,Ta)5Se8 gave similar results.
Hiroaki Wada - One of the best experts on this subject based on the ideXlab platform.
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synthesis crystal structure and property of the iron rich Tantalum Compounds fe ta 5x8 with x s se
Journal of Alloys and Compounds, 2004Co-Authors: Hiroaki Wada, Hiroshi Nozaki, Akira Sato, K. Takada, T.t. SasakiAbstract:Abstract The phase relations of the Fe–Ta–S system at 1223 K have been examined by sealed silica tube methods and its isothermal section of the phase diagram has been constructed tentatively on the basis of X-ray results. The novel ternary sulfide (Fe,Ta)5S8 (iron-rich intercalation phase Fe0.25(Ta0.5Fe0.5)S2) was found to exist in the iron-rich upper portion of the phase diagram. It crystallizes in the trigonal structures with space group P 3 m1 and the lattice constants of a=3.3656(9) A, c=5.8140(11) A. This compound exhibits a weak ferrimagnetic property with the Curie temperature Tc of 600 K and a semiconducting behaviour with an electric resistivity of 0.135 Ω cm at room temperature. The isomorphous selenide (Fe,Ta)5Se8 gave similar results.
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Synthesis, crystal structure and property of the iron-rich Tantalum Compounds (Fe,Ta)5X8 with X = S, Se
Journal of Alloys and Compounds, 2004Co-Authors: Hiroaki Wada, Hiroshi Nozaki, Akira Sato, K. Takada, T.t. SasakiAbstract:Abstract The phase relations of the Fe–Ta–S system at 1223 K have been examined by sealed silica tube methods and its isothermal section of the phase diagram has been constructed tentatively on the basis of X-ray results. The novel ternary sulfide (Fe,Ta)5S8 (iron-rich intercalation phase Fe0.25(Ta0.5Fe0.5)S2) was found to exist in the iron-rich upper portion of the phase diagram. It crystallizes in the trigonal structures with space group P 3 m1 and the lattice constants of a=3.3656(9) A, c=5.8140(11) A. This compound exhibits a weak ferrimagnetic property with the Curie temperature Tc of 600 K and a semiconducting behaviour with an electric resistivity of 0.135 Ω cm at room temperature. The isomorphous selenide (Fe,Ta)5Se8 gave similar results.
Taek-mo Chung - One of the best experts on this subject based on the ideXlab platform.
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Synthesis and Characterization of Novel Volatile Imido-Aminoalkoxide Tantalum Compounds
2016Co-Authors: Bo Keun Park, Hyo-suk Kim, Su Jung Shin, Jae Ki Min, Kang Mun Lee, Chang Gyoun Kim, Taek-mo ChungAbstract:A novel Ta(V) tBu-imido/aminoalkoxide complex, Ta(NtBu)(dmamp)2Cl (1), was synthesized by metathesis reaction between Ta(NtBu)Cl3(py)2 and 2 equiv of Na(dmamp), and subsequent reaction of 1 with 1 equiv of MeLi gave a new Tantalum complex, Ta(NtBu)(dmamp)2Me (2). Compounds 1 and 2 have been characterized by IR, 1H and 13C NMR spectroscopy, and microanalytical data. The molecular structure of 1, determined by X-ray single crystallography, revealed distorted octahedral geometry. The behavior of compound 1 in solution was studied by variable-temperature 1H NMR spectra. Thermogravimetric analysis revealed superior thermal properties of 2 as compared to those of 1
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Synthesis and Characterization of Novel Volatile Imido-Aminoalkoxide Tantalum Compounds
Organometallics, 2012Co-Authors: Bo Keun Park, Hyo-suk Kim, Su Jung Shin, Jae Ki Min, Kang Mun Lee, Chang Gyoun Kim, Taek-mo ChungAbstract:A novel Ta(V) tBu-imido/aminoalkoxide complex, Ta(NtBu)(dmamp)2Cl (1), was synthesized by metathesis reaction between Ta(NtBu)Cl3(py)2 and 2 equiv of Na(dmamp), and subsequent reaction of 1 with 1 equiv of MeLi gave a new Tantalum complex, Ta(NtBu)(dmamp)2Me (2). Compounds 1 and 2 have been characterized by IR, 1H and 13C NMR spectroscopy, and microanalytical data. The molecular structure of 1, determined by X-ray single crystallography, revealed distorted octahedral geometry. The behavior of compound 1 in solution was studied by variable-temperature 1H NMR spectra. Thermogravimetric analysis revealed superior thermal properties of 2 as compared to those of 1.
Akira Sato - One of the best experts on this subject based on the ideXlab platform.
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synthesis crystal structure and property of the iron rich Tantalum Compounds fe ta 5x8 with x s se
Journal of Alloys and Compounds, 2004Co-Authors: Hiroaki Wada, Hiroshi Nozaki, Akira Sato, K. Takada, T.t. SasakiAbstract:Abstract The phase relations of the Fe–Ta–S system at 1223 K have been examined by sealed silica tube methods and its isothermal section of the phase diagram has been constructed tentatively on the basis of X-ray results. The novel ternary sulfide (Fe,Ta)5S8 (iron-rich intercalation phase Fe0.25(Ta0.5Fe0.5)S2) was found to exist in the iron-rich upper portion of the phase diagram. It crystallizes in the trigonal structures with space group P 3 m1 and the lattice constants of a=3.3656(9) A, c=5.8140(11) A. This compound exhibits a weak ferrimagnetic property with the Curie temperature Tc of 600 K and a semiconducting behaviour with an electric resistivity of 0.135 Ω cm at room temperature. The isomorphous selenide (Fe,Ta)5Se8 gave similar results.
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Synthesis, crystal structure and property of the iron-rich Tantalum Compounds (Fe,Ta)5X8 with X = S, Se
Journal of Alloys and Compounds, 2004Co-Authors: Hiroaki Wada, Hiroshi Nozaki, Akira Sato, K. Takada, T.t. SasakiAbstract:Abstract The phase relations of the Fe–Ta–S system at 1223 K have been examined by sealed silica tube methods and its isothermal section of the phase diagram has been constructed tentatively on the basis of X-ray results. The novel ternary sulfide (Fe,Ta)5S8 (iron-rich intercalation phase Fe0.25(Ta0.5Fe0.5)S2) was found to exist in the iron-rich upper portion of the phase diagram. It crystallizes in the trigonal structures with space group P 3 m1 and the lattice constants of a=3.3656(9) A, c=5.8140(11) A. This compound exhibits a weak ferrimagnetic property with the Curie temperature Tc of 600 K and a semiconducting behaviour with an electric resistivity of 0.135 Ω cm at room temperature. The isomorphous selenide (Fe,Ta)5Se8 gave similar results.
Hiroshi Nozaki - One of the best experts on this subject based on the ideXlab platform.
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synthesis crystal structure and property of the iron rich Tantalum Compounds fe ta 5x8 with x s se
Journal of Alloys and Compounds, 2004Co-Authors: Hiroaki Wada, Hiroshi Nozaki, Akira Sato, K. Takada, T.t. SasakiAbstract:Abstract The phase relations of the Fe–Ta–S system at 1223 K have been examined by sealed silica tube methods and its isothermal section of the phase diagram has been constructed tentatively on the basis of X-ray results. The novel ternary sulfide (Fe,Ta)5S8 (iron-rich intercalation phase Fe0.25(Ta0.5Fe0.5)S2) was found to exist in the iron-rich upper portion of the phase diagram. It crystallizes in the trigonal structures with space group P 3 m1 and the lattice constants of a=3.3656(9) A, c=5.8140(11) A. This compound exhibits a weak ferrimagnetic property with the Curie temperature Tc of 600 K and a semiconducting behaviour with an electric resistivity of 0.135 Ω cm at room temperature. The isomorphous selenide (Fe,Ta)5Se8 gave similar results.
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Synthesis, crystal structure and property of the iron-rich Tantalum Compounds (Fe,Ta)5X8 with X = S, Se
Journal of Alloys and Compounds, 2004Co-Authors: Hiroaki Wada, Hiroshi Nozaki, Akira Sato, K. Takada, T.t. SasakiAbstract:Abstract The phase relations of the Fe–Ta–S system at 1223 K have been examined by sealed silica tube methods and its isothermal section of the phase diagram has been constructed tentatively on the basis of X-ray results. The novel ternary sulfide (Fe,Ta)5S8 (iron-rich intercalation phase Fe0.25(Ta0.5Fe0.5)S2) was found to exist in the iron-rich upper portion of the phase diagram. It crystallizes in the trigonal structures with space group P 3 m1 and the lattice constants of a=3.3656(9) A, c=5.8140(11) A. This compound exhibits a weak ferrimagnetic property with the Curie temperature Tc of 600 K and a semiconducting behaviour with an electric resistivity of 0.135 Ω cm at room temperature. The isomorphous selenide (Fe,Ta)5Se8 gave similar results.
