ALaMnBO6 (A=Ca, Sr, Ba; B=Fe, Ru) double perovskites

Ramesha, K. ; Thangadurai, V. ; Sutar, D. ; Subramanyam, S. V. ; Subbanna, G. N. ; Gopalakrishnan, J. (2000) ALaMnBO6 (A=Ca, Sr, Ba; B=Fe, Ru) double perovskites Materials Research Bulletin, 35 (4). pp. 559-565. ISSN 0025-5408

Full text not available from this repository.

Official URL:

Related URL:


We report the synthesis and investigation of electrical and magnetic properties of double perovskites of the formula ALaMnBO6 for A = Ca, Sr, Ba and B = Fe, Ru. Powder X-ray diffraction (XRD) shows formation of cubic/pseudocubic perovskite structure for all the phases, with no obvious long-range ordering of B-site cations. Electron diffraction, however, reveals an ordering of Mn and Ru in ALaMnRuO6, showing a doubling of the primitive cubic perovskite cell. While the B = Fe phases are paramagnetic insulators, the B = Ru phases are ferrimagnetic semiconductors. It is likely that in the B = Ru phases, a valence equilibrium exists between MnIII/RuIV and MnII/RuV states that is biased toward the latter.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:A. Oxides; B. Chemical Synthesis; C. X-ray Diffraction; D. Electrical Properties; D. Magnetic Properties
ID Code:12738
Deposited On:11 Nov 2010 09:02
Last Modified:02 Jun 2011 11:00

Repository Staff Only: item control page