High‐Pressure High‐Temperature Synthesis of ϵ‐Fe2IrN0.2412. Issue 5 (23rd January 2014)

• Record Type: Journal Article
• Authors: Guo, Kai; Rau, Dieter; Schnelle, Walter; Burkhardt, Ulrich; Niewa, Rainer; Schwarz, Ulrich
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 640:Issue 5(2014)
• Page Start: 814
• Page End: 818
• Publication Date: 2014-01-23
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.201300609
• Languages: English
• ISSNs: 0044-2313

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A high‐pressure high‐temperature synthesis involving initial reaction, nitrogen depletion and annealing yields a new ϵ‐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 % (<italic>x</italic> = 0.24) and 1.2 wt % (<italic>x</italic> = 0.27), respectively. Above 750 K, the phase Fe₂IrN_0.24 decomposes into solid solutions ϵ‐Fe(Ir) and γ‐Fe(Ir) involving the release of N₂ at ambient pressure. Magnetic susceptibility data suggest long‐range antiferromagnetic ordering at <italic>T</italic>_N = 27 K.</p> </abstract>