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A new perovskite series based on lanthanum chromite [LaCr1−xMxO3−δ]

Devi, Sujatha P and Rao, Subba M (1993) A new perovskite series based on lanthanum chromite [LaCr1−xMxO3−δ]. In: Materials Research Bulletin, 28 (10). pp. 1075-1082.

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Official URL: http://dx.doi.org/10.1016/0025-5408(93)90146-5

Abstract

A new series of substituted perovskites of the type LaCr1−xMxO3−δ, where M=Cu or Mg have been synthesised by the citrate gel process and characterized by means of powder X-ray diffraction, infrared spectroscopy, selected area diffraction and also by electron paramagnetic resonance spectroscopy. The general powder morphology was also observed using scanning electron microscopy. 40 mole percent substitution of Cr3+ by Cu2+ or Mg2+ have shown to result in single phase perovskite structure. Beyond x=0.5, a new phase has been identified in a narrow compositional range. Effect of Cu and Mg substitution on the sinterability of pure LaCrO3 has also been studied. It is possible to get near theoretically dense materials at a temperature as low as 1200°C in air by copper substitution.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 31 Jan 2011 08:30
Last Modified: 31 Jan 2011 08:30
URI: http://eprints.iisc.ernet.in/id/eprint/35290

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