Zerr, Andreas ; Miehe, Gerhard ; Riedel, Ralf (2003)
Synthesis of cubic Zirconium and Hafnium nitride having Th3P4 structure.
In: Nature materials, 2
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
High-pressure synthesis is a powerful method for the preparation of novel materials with high elastic moduli and hardness. Additionally, such materials may exhibit interesting thermal, optoelectronic, semiconductuing, magnetic or superconducting properties. Here, we report on the high-pressure synthesis of zirconium and hafnium nitrides with the stoichiometry M3N4, where M = Zr, Hf. Synthesis experiments were performed in a laser-heated diamond anvil cell at pressures up to 18 GPa and temperatures up to 3,000 K. We observed formation of cubic Zr3N4 and Hf3N4 (c-M3N4) with a Th3P4-structure, where M-cations are eightfold coordinated by N anions. The c-M3N4 phases are the first binary nitrides with such a high coordination number. Both compounds exhibit high bulk moduli around 250 GPa, which indicates high hardness. Moreover, the new nitrides, c-Zr3N4 and c-Hf3N4, may be the first members of a larger group of transition metal and/or lanthanide nitrides with interesting ferromagnetic or superconducting behaviour.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2003 |
| Autor(en): | Zerr, Andreas ; Miehe, Gerhard ; Riedel, Ralf |
| Art des Eintrags: | Bibliographie |
| Titel: | Synthesis of cubic Zirconium and Hafnium nitride having Th3P4 structure |
| Sprache: | Englisch |
| Publikationsjahr: | 2003 |
| Verlag: | Nature Publishing Group |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Nature materials |
| Jahrgang/Volume einer Zeitschrift: | 2 |
| Kurzbeschreibung (Abstract): | High-pressure synthesis is a powerful method for the preparation of novel materials with high elastic moduli and hardness. Additionally, such materials may exhibit interesting thermal, optoelectronic, semiconductuing, magnetic or superconducting properties. Here, we report on the high-pressure synthesis of zirconium and hafnium nitrides with the stoichiometry M3N4, where M = Zr, Hf. Synthesis experiments were performed in a laser-heated diamond anvil cell at pressures up to 18 GPa and temperatures up to 3,000 K. We observed formation of cubic Zr3N4 and Hf3N4 (c-M3N4) with a Th3P4-structure, where M-cations are eightfold coordinated by N anions. The c-M3N4 phases are the first binary nitrides with such a high coordination number. Both compounds exhibit high bulk moduli around 250 GPa, which indicates high hardness. Moreover, the new nitrides, c-Zr3N4 and c-Hf3N4, may be the first members of a larger group of transition metal and/or lanthanide nitrides with interesting ferromagnetic or superconducting behaviour. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Strukturforschung |
| Hinterlegungsdatum: | 20 Nov 2008 08:16 |
| Letzte Änderung: | 20 Feb 2020 13:26 |
| PPN: | |
| Sponsoren: | The work was financially supported by the Deutsche Forschungsgemeinschaft (Bonn, Germany) and by the Fonds der Chemischen Industrie (Frankfurt, Germany). |
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