Synthesis, structure and properties of the oxynitrides SrWO{sub 2}N and SrMoO{sub 2.5}N{sub 0.5}
Journal Article
·
· Materials Research Bulletin
- Rutgers-The State Univ. of New Jersey, Piscataway, NJ (United States). Dept. of Chemistry
Two oxynitrides, SrWO{sub 2}N and SrMoO{sub 2.5}N{sub 0.5}, were synthesized by the ammonolysis of SrMO{sub 4} (M = W, Mo) at 900 and 800 C, respectively. Both oxynitrides adopt the cubic perovskite structure (space group Pm3m) with a = 3.97951(9) {angstrom} for SrWO{sub 2}N and a = 3.9773(1) {angstrom} for a SrMoO{sub 2.5}N{sub 0.5}. The M-(O,N) and Sr-(O,N) bond lengths, determined form the Rietveld refinement of the powder X-ray diffraction data, are in good agreement with those reported for other oxynitrides with the perovskite structure. Nearly temperature independent electrical resistivities were observed for both compounds. The magnetic susceptibility measurements indicated Pauli-paramagnetic behavior in both cases. A sharp anomaly observed in the magnetization data of SrMoO{sub 2.5}N{sub 0.5} at {approximately} 50 K has been attributed to a spin-glass-like transition.
- OSTI ID:
- 561894
- Journal Information:
- Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 11 Vol. 32; ISSN MRBUAC; ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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