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High-Pressure High-Temperature Synthesis of ϵ-Fe2IrN0.24

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/persons/resource/persons126634

Guo,  Kai
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126838

Schnelle,  Walter
Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126556

Burkhardt,  Ulrich
Ulrich Burkhardt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126841

Schwarz,  Ulrich
Ulrich Schwarz, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Guo, K., Rau, D., Schnelle, W., Burkhardt, U., Niewa, R., & Schwarz, U. (2014). High-Pressure High-Temperature Synthesis of ϵ-Fe2IrN0.24. Zeitschrift für anorganische und allgemeine Chemie, 640(5), 814-818. doi:10.1002/zaac.201300609.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-1668-B
Abstract
A high-pressure high-temperature synthesis involving initial reaction, nitrogen depletion and annealing yields a new E-type iron iridium nitride. Energy dispersive X-ray spectroscopy of metallographic samples evidence a main phase having a molar metal ratio of Fe:Ir = 2:1 within experimental error. Chemical analyses and thermogravimetric measurements quantify the nitrogen content to 1.07 wt% (x = 0.24) and 1.2 wt% (x = 0.27), respectively. Above 750 K, the phase Fe2IrN0.24 decomposes into solid solutions E-Fe(Ir) and -Fe(Ir) involving the release of N-2 at ambient pressure. Magnetic susceptibility data suggest long-range antiferromagnetic ordering at T-N = 27 K.