Ultrafast sintering of La–Ca–Mn–O bulk ceramics by thermal plasma assisted heating

Mishra, Dilip Kumar; Sahu, D. R.; Singh, Saroj Kumar; Mishra, Prerna; Pradhan, A. K.; Roul, B. K.

doi:10.1016/j.jmmm.2007.12.015

Cited by 8 publications

(1 citation statement)

References 13 publications

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“…For example, it is known that sintering of La 1-x Mn 1-x O 3 perovskite under oxygen atmosphere varies the Mn 3+ /Mn 4+ ratio, changing the electrical and magnetic properties [11].The most popular synthesis route to produce CMMO is the usual solid state reaction method in which the long time and high sintering temperatures of production are required to favor the grain growth. There are other routes to produce ceramic perovskites; for example, spark plasma sintering and thermal plasma assisted heating have been used to produce dense systems based on LaMnO 3 compound [12,13], the glow discharge (GD) has been applied in the sintering of materials [14]. According to the literature, the GD has been applied in diverse fields of science and technology, mainly in surface treatments, deposition processes, analytical techniques, heat transferring and sintering of materials [14,15].…”

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confidence: 99%

Glow discharge effect on temperature and time of treatment for the synthesis of Mo-doped manganite

Supelano

Pacheco²,

Vargas³

et al. 2019

DYNA

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We report the synthesis of CaMn0.9Mo0.1O3 manganite by glow discharge (GD) plasma treatment under Argon-Air atmosphere. The morphological, structural and magnetic properties were evaluated by scanning electron microscopy (SEM), X-ray diffraction (XRD) and magnetization measures. The results from these measures reveal that the properties of GD synthesized manganite are similar to that exhibited by CaMn0.9Mo0.1O3 produced by conventional resistive furnace. The Rietveld analysis of XRD patterns performed at room temperature show that the samples crystallize in orthorhombic structure of Pnma (62) space group. The magnetization curves as a functionof temperature show two inflection points related to paramagnetic-antiferromagnetic and structural transition. The GD treatment produces a compound with similar properties, reducing the time and energy consumption in comparison with conventional synthesis route by using resistive furnace.

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