Revisiting a rare intermetallic ternary nitride, Ni{sub 2}Mo{sub 3}N: Crystal structure and property measurements

Journal Article · Sun Aug 01 04:00:00 EDT 1999 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1006/jssc.1999.8296· OSTI ID:679254

Weil, K S; Kumta, P N ^[1]; Grins, J ^[2]

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1. Carnegie Mellon Univ., Pittsburgh, PA (United States). Dept. of Materials Science and Engineering
2. Stockholm Univ. (Sweden). Dept. of Inorganic Chemistry

The intermetallic ternary nitride, Ni{sub 2}Mo{sub 3}N, has been synthesized by the ammonolysis of a complexed mixed-metal chloride precursor. This compound crystallizes in the cubic space group P4{sub 1}32 [213] with Z = 4 and a lattice parameter of a = 6.6340(2) {angstrom}, as determined from powder X-ray and neutron diffraction experiments and the Rietveld refinement of the neutron data collected at room temperature. The refinement converged with R{sub wp} = 0.032, R{sub p} = 0.025, R{sub I} = 0.059, and {chi}{sup 2} = 1.48. Ni{sub 2}Mo{sub 3}N assumes a filled {beta}-manganese structure, ideally consisting of a lattice of corner-sharing Mo{sub 6}N octahedra in a five-membered ring arrangement and an interpenetrating net-like lattice of nickel atoms which occupy the pentagonal holes formed by the molybdenum nitride polyhedral rings. Electrical and magnetic characterization of Ni{sub 2}Mo{sub 3}N indicate that it is a metallic conductor which antiferromagnetically orders at 14.7 K. Neutron diffraction conducted at 10 K suggests that the size of the magnetic unit cell matches that of the crystallographic unit cell. A version of this nitride phase which is substoichiometric in nitrogen and therefore has a smaller lattice parameter also displays antiferromagnetic ordering, but with a much higher ordering temperature of 68.7 K.

• OSTI ID: 679254
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 146; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANTIFERROMAGNETISM
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
EXPERIMENTAL DATA
LATTICE PARAMETERS
MAGNETIC PROPERTIES
MOLYBDENUM NITRIDES
NEUTRON DIFFRACTION
NICKEL NITRIDES
X-RAY DIFFRACTION