Synthesis, structure and properties of the oxynitrides SrWO2N AND SrMoO2.5N0.5

Ian D. Fawcett; K. V. Ramanujachary; Martha Greenblatt

doi:10.1016/S0025-5408(97)00138-4

Synthesis, structure and properties of the oxynitrides SrWO₂N AND SrMoO_2.5N_0.5

Ian D. Fawcett
, K. V. Ramanujachary
, Martha Greenblatt

Chemistry

Research output: Contribution to journal › Article › peer-review

41 Scopus citations

Abstract

Two oxynitrides, SrWO₂N and SrMoO_2.5N_0.5, were synthesized by the ammonolysis of SrMO₄ (M = W, Mo) at 900 and 800°C, respectively. Both oxynitrides adopt the cubic perovskite structure (space group Pm3m) with a = 3.97951(9) Å for SrWO₂N and a = 3.9773(1) Å for SrMoO_2.5N_0.5. The M-(O,N) and Sr-(O,N) bond lengths, determined from 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_2.5N_0.5 at ∼50 K has been attributed to a spin-glass-like transition.

Original language	English (US)
Pages (from-to)	1565-1570
Number of pages	6
Journal	Materials Research Bulletin
Volume	32
Issue number	11
DOIs	https://doi.org/10.1016/S0025-5408(97)00138-4
State	Published - Nov 1997

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/S0025-5408(97)00138-4

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@article{f6fe5b2d1444482bb0287a62c31b2640,

title = "Synthesis, structure and properties of the oxynitrides SrWO2N AND SrMoO2.5N0.5",

abstract = "Two oxynitrides, SrWO2N and SrMoO2.5N0.5, were synthesized by the ammonolysis of SrMO4 (M = W, Mo) at 900 and 800°C, respectively. Both oxynitrides adopt the cubic perovskite structure (space group Pm3m) with a = 3.97951(9) {\AA} for SrWO2N and a = 3.9773(1) {\AA} for SrMoO2.5N0.5. The M-(O,N) and Sr-(O,N) bond lengths, determined from 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 SrMoO2.5N0.5 at ∼50 K has been attributed to a spin-glass-like transition.",

author = "Fawcett, \{Ian D.\} and Ramanujachary, \{K. V.\} and Martha Greenblatt",

note = "Funding Information: This work was supportedb y the American Chemical Society, Petroleum Research Fund 30224-AC3-SF96. One of us (K.V.R) would like to thank Rowan University for a Rowan SBR releaset ime award.",

year = "1997",

month = nov,

doi = "10.1016/S0025-5408(97)00138-4",

language = "English (US)",

volume = "32",

pages = "1565--1570",

journal = "Materials Research Bulletin",

issn = "0025-5408",

publisher = "Elsevier Ltd",

number = "11",

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TY - JOUR

T1 - Synthesis, structure and properties of the oxynitrides SrWO2N AND SrMoO2.5N0.5

AU - Fawcett, Ian D.

AU - Ramanujachary, K. V.

AU - Greenblatt, Martha

N1 - Funding Information: This work was supportedb y the American Chemical Society, Petroleum Research Fund 30224-AC3-SF96. One of us (K.V.R) would like to thank Rowan University for a Rowan SBR releaset ime award.

PY - 1997/11

Y1 - 1997/11

N2 - Two oxynitrides, SrWO2N and SrMoO2.5N0.5, were synthesized by the ammonolysis of SrMO4 (M = W, Mo) at 900 and 800°C, respectively. Both oxynitrides adopt the cubic perovskite structure (space group Pm3m) with a = 3.97951(9) Å for SrWO2N and a = 3.9773(1) Å for SrMoO2.5N0.5. The M-(O,N) and Sr-(O,N) bond lengths, determined from 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 SrMoO2.5N0.5 at ∼50 K has been attributed to a spin-glass-like transition.

AB - Two oxynitrides, SrWO2N and SrMoO2.5N0.5, were synthesized by the ammonolysis of SrMO4 (M = W, Mo) at 900 and 800°C, respectively. Both oxynitrides adopt the cubic perovskite structure (space group Pm3m) with a = 3.97951(9) Å for SrWO2N and a = 3.9773(1) Å for SrMoO2.5N0.5. The M-(O,N) and Sr-(O,N) bond lengths, determined from 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 SrMoO2.5N0.5 at ∼50 K has been attributed to a spin-glass-like transition.

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U2 - 10.1016/S0025-5408(97)00138-4

DO - 10.1016/S0025-5408(97)00138-4

M3 - Article

AN - SCOPUS:0031271760

SN - 0025-5408

VL - 32

SP - 1565

EP - 1570

JO - Materials Research Bulletin

JF - Materials Research Bulletin

IS - 11

ER -

Synthesis, structure and properties of the oxynitrides SrWO₂N AND SrMoO_2.5N_0.5

Abstract

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