Structural characterization of chemically synthesized cubic lanthanum sulphide (γ-La2S3)

Prashant N. Kumta; Vinayak P. Dravid; Subhash H. Risbud

doi:10.1080/13642819308215283

Structural characterization of chemically synthesized cubic lanthanum sulphide (γ-La₂S₃)

Prashant N. Kumta, Vinayak P. Dravid, Subhash H. Risbud

Materials Science and Engineering

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Abstract

Cubic lanthanum sulphide (γ-La₂S₃) belongs to the family of rare-earth chalcogenides and is a potential far-infrared (8-14 μm) transmitting material. Low- temperature chemical techniques incorporating organometallics have been employed to synthesize ultrafine sulphide precursors (about 20 nm in size) at room temperature. The precursors transform to form cubic (γ-La₂S₃) powders at 1000°C. The thermal stability, phase evolution characteristics and microstructure of the fine particles have been investigated using differential scanning calorimetry, X-ray diffraction and electron microscopy. Convergent-beam electron diffraction was performed on the crystalline powders and hot-pressed ceramics and the space group was identified to be 143d.

Original language	English (US)
Pages (from-to)	67-84
Number of pages	18
Journal	Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
Volume	68
Issue number	1
DOIs	https://doi.org/10.1080/13642819308215283
State	Published - Jul 1993

ASJC Scopus subject areas

Chemical Engineering(all)
Physics and Astronomy(all)

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title = "Structural characterization of chemically synthesized cubic lanthanum sulphide (γ-La2S3)",

abstract = "Cubic lanthanum sulphide (γ-La2S3) belongs to the family of rare-earth chalcogenides and is a potential far-infrared (8-14 μm) transmitting material. Low- temperature chemical techniques incorporating organometallics have been employed to synthesize ultrafine sulphide precursors (about 20 nm in size) at room temperature. The precursors transform to form cubic (γ-La2S3) powders at 1000°C. The thermal stability, phase evolution characteristics and microstructure of the fine particles have been investigated using differential scanning calorimetry, X-ray diffraction and electron microscopy. Convergent-beam electron diffraction was performed on the crystalline powders and hot-pressed ceramics and the space group was identified to be 143d.",

author = "Kumta, {Prashant N.} and Dravid, {Vinayak P.} and Risbud, {Subhash H.}",

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Structural characterization of chemically synthesized cubic lanthanum sulphide (γ-La₂S₃). / Kumta, Prashant N.; Dravid, Vinayak P.; Risbud, Subhash H.
In: Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties, Vol. 68, No. 1, 07.1993, p. 67-84.

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

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AU - Kumta, Prashant N.

AU - Dravid, Vinayak P.

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N2 - Cubic lanthanum sulphide (γ-La2S3) belongs to the family of rare-earth chalcogenides and is a potential far-infrared (8-14 μm) transmitting material. Low- temperature chemical techniques incorporating organometallics have been employed to synthesize ultrafine sulphide precursors (about 20 nm in size) at room temperature. The precursors transform to form cubic (γ-La2S3) powders at 1000°C. The thermal stability, phase evolution characteristics and microstructure of the fine particles have been investigated using differential scanning calorimetry, X-ray diffraction and electron microscopy. Convergent-beam electron diffraction was performed on the crystalline powders and hot-pressed ceramics and the space group was identified to be 143d.

AB - Cubic lanthanum sulphide (γ-La2S3) belongs to the family of rare-earth chalcogenides and is a potential far-infrared (8-14 μm) transmitting material. Low- temperature chemical techniques incorporating organometallics have been employed to synthesize ultrafine sulphide precursors (about 20 nm in size) at room temperature. The precursors transform to form cubic (γ-La2S3) powders at 1000°C. The thermal stability, phase evolution characteristics and microstructure of the fine particles have been investigated using differential scanning calorimetry, X-ray diffraction and electron microscopy. Convergent-beam electron diffraction was performed on the crystalline powders and hot-pressed ceramics and the space group was identified to be 143d.

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Structural characterization of chemically synthesized cubic lanthanum sulphide (γ-La₂S₃)

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