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Your search keyword '"Fokwa, Boniface P. T."' showing total 15 results
Start Over Author "Fokwa, Boniface P. T." Language english Journal cheminform
15 results on '"Fokwa, Boniface P. T."'

1. ChemInform Abstract: Experimental and First-Principles Studies of the Ternary Borides Ta3Ru5B2 and M3-xRu5+xB2 (M: Zr, Hf).

Author

Hermus, Martin and Fokwa, Boniface P. T.

Subjects
*BORIDES, *BORON compounds, *ORGANIC compounds, *CHEMICAL equations, *ORGANIC synthesis
Abstract

The ternary borides Ta3Ru5B2, Zr2.86Ru5.14B2, and Hf2.83Ru5.17B2 are synthesized by arc-melting of stoichiometric mixtures of the elements (Ar, Cu crucibles). [ABSTRACT FROM AUTHOR]

Published
2014
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2. ChemInform Abstract: V1+xNb1-xIrB2 (x ≈ 0.1), the First Quaternary Metal-Rich Boride Adopting the Mo2IrB2-Type Structure: Synthesis, Crystal and Electronic Structure and Bonding Analysis.

Author

Goerens, Christian and Fokwa, Boniface P. T.

Abstract

The polycrystalline title compound and single crystals thereof are prepared by arc-melting of a stoichiometric pelletized mixture of the elements (Cu crucible under Ar) and characterized by XRD and EDX. [ABSTRACT FROM AUTHOR]

Published
2013
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4. ChemInform Abstract: Unexpected Synergy Between Magnetic Iron Chains and Stacked B6 Rings in Nb6Fe1-xIr6+xB8.

Author

Mbarki, Mohammed, Touzani, Rachid St., and Fokwa, Boniface P. T.

Subjects
*MAGNETISM, *NIOBIUM compounds, *METAL quenching, *SINGLE crystals, *X-ray diffraction
Abstract

Highly crystalline Nb6Fe1-xIr6+xB8 (68% yield) is prepared from the elements in the molar ratio of Nb:Fe:Ir:B = 6:1:6:9 by rapid arc melting and quenching. [ABSTRACT FROM AUTHOR]

Published
2015
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5. ChemInform Abstract: Nb2OsB2, with a New Twofold Superstructure of the U3Si2 Type: Synthesis, Crystal Chemistry and Chemical Bonding.

Author

Mbarki, Mohammed, Touzani, Rachid St., and Fokwa, Boniface P. T.

Subjects
*CHEMICAL synthesis, *CHEMICAL bonds, *X-ray diffraction, *NIOBIUM compounds, *STRUCTURAL stability, *ELECTRONIC structure
Abstract

The new title compound is synthesized by arc melting of the elements in a water-cooled Cu crucible under argon (ratio 7:6:8 for Nb:Os:B, 80% yield). [ABSTRACT FROM AUTHOR]

Published
2013
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8. ChemInform Abstract: EuAu3Al2: Crystal and Electronic Structures and Spectroscopic, Magnetic, and Magnetocaloric Properties.

Author

Schmiegel, Jan‐Patrick, Block, Theresa, Gerke, Birgit, Fickenscher, Thomas, Touzani, Rachid St., Fokwa, Boniface P. T., and Janka, Oliver

Subjects
*CHEMICAL synthesis, *ELECTRONIC structure
Abstract

The title compound is synthesized from the elements (Ta ampule, 1300 K for 10 min and 825 K for 2-8 h) and characterized by single crystal XRD, Moessbauer spectroscopy, magnetic measurements, and DFT calculations. [ABSTRACT FROM AUTHOR]

Published
2016
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10. ChemInform Abstract: Ba3Pt4Al4 - Structure, Properties, and Theoretical and NMR Spectroscopic Investigations of a Complex Platinide Featuring Heterocubane [Pt4Al4] Units.

Author

Stegemann, Frank, Benndorf, Christopher, Bartsch, Timo, Touzani, Rachid St., Bartsch, Manfred, Zacharias, Helmut, Fokwa, Boniface P. T., Eckert, Hellmut, and Janka, Oliver

Subjects
*X-ray diffraction, *ELECTRONIC band structure, *DENSITY functional theory
Abstract

The title compound is prepared from the elements (Nb tube, 1073 K, 7 d) and characterized by powder XRD, XPS, 27Al MAS NMR spectroscopy, magnetic measurements, and DFT band structure calculations. [ABSTRACT FROM AUTHOR]

Published
2016
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11. Electronic Pseudogap-Driven Formation of New Double-Perovskite-Like Borides within the Sc2Ir6--xTxB (T: Pd, Ni; x: 0--6) Series.

Author

Hermus, Martin, Scheifers, Jan P., Touzani, Rachid, and Fokwa, Boniface P. T.

Subjects
*PEROVSKITE, *BORIDES, *ELECTRONIC structure
Abstract

DFT calculations for the ternary phases Sc2M6B (M: Ir, Pd, Ni) reveal the presence of pseudogaps near their Fermi levels between 61 and 68 valence electrons leading to the prediction of new phases Sc2Ir6‐xPdxB and Sc2Ir6‐xNixB (x = 0—6) in the double‐perovskite‐like Ti2Rh6B‐type structure. [ABSTRACT FROM AUTHOR]

Published
2015
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12. ChemInform Abstract: Three Structure Types and Intermediate Cerium Valence in the Solid Solution CeRu1-xNixSn.

Author

Niehaus, Oliver, Abdala, Paula M., Touzani, Rachid St., Fokwa, Boniface P. T., and Poettgen, Rainer

Subjects
*CERIUM, *SOLID solutions, *CRYSTALLIZATION, *HEAT transfer, *SOLIDIFICATION
Abstract

Single crystals of the solid solutions CeRu1-xNixSn (x = 0.12-1) are obtained by melting stoichiometric mixtures of the elements (arc welded Nb ampoules, 1670 K, 5 min; controlled cooling). [ABSTRACT FROM AUTHOR]

Published
2015
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13. ChemInform Abstract: Drastic Change of Magnetic Interactions and Hysteresis Through Site-Preferential Ru/Ir Substitution in Sc2FeRu5-xIrB2.

Author

Hermus, Martin, Yang, Minghui, Gruener, Daniel, DiSalvo, Francis J., and Fokwa, Boniface P. T.

Subjects
*RUTHENIUM compounds, *HYSTERESIS, *SUBSTITUTION reactions, *MAGNETIC properties of metals, *MELTING, *CHEMICAL sample preparation, *CHEMICAL structure
Abstract

Sc2FeRu5-xIrxB2 (x: 1, 2, 3, 4) are prepared by arc melting of the elements several times under Ar (20 s, 40 A). [ABSTRACT FROM AUTHOR]

Published
2014
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14. ChemInform Abstract: Scaffolds of Magnetically Active 3d Metals in the Valence Electron Controlled Borides Ti9-xM2+xRu18B8 (M: Cr-Ni; x = 0.5-1): Structural, Electronic and Magnetic Properties.

Author

Goerens, Christian, Brgoch, Jakoah, Miller, Gordon J., and Fokwa, Boniface P. T.

Subjects
*CONDUCTION electrons, *BORIDES
Abstract

Polycrystalline samples of the boride series Ti9-xM2+xRu18B8 (M: Cr, Co, Mn, Ni) and single crystals of Ti8Co3Ru18B8 are prepared by arc melting of the elements. [ABSTRACT FROM AUTHOR]

Published
2013
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