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Structural and magnetic study of magnetoelectric perovskite Sr2CoMoO6

SA Ivanov ; Sten G. Eriksson (Institutionen för kemi- och bioteknik, Oorganisk miljökemi) ; R Tellgren ; H Rundlöf ; M Tssegai
ZEITSCHRIFT FUR KRISTALLOGRAPHIE 537-542 Part 2 Suppl. 23, 2006 2, p. 537-542. (2006)
[Artikel, refereegranskad vetenskaplig]

A study of the crystal and magnetic structure of the double perovskite Sr2CoMoO6 has been carried out on a polycrystalline sample using neutron diffraction (NPD) data between 10-700K. An analysis of NPD patterns at 295K has shown that this compound crystallizes in the tetragonal space group 14/m with a = 5.5616(l) and c = 7.9470(2) angstrom and has a 1:1 ordered arrangement of the B-sites. This compound undergoes a 14/m -> Fm3m improper ferroelectric phase transition near 563 K. A low-temperature antiferomagnetic ordering (below T-N = 37 K) has been followed from a sequence of low-temperature NPD data sets. The magnetic structure is defined by the propagation vector (k) over right arrow = (1/2,0,1/2). Alongside the obtained experimental results on magnetic and electric properties some aspects of magnetoelectricity in this perovskite is also discussed.

Nyckelord: Author Keywords: neutron diffraction; perovskite; crystal structure; magnetic structure


Sten Eriksson, Department of Chemical and Biological Engineering, Environmental Inorganic Chemistry, stene@chalmers.se



Denna post skapades 2007-01-30. Senast ändrad 2010-01-26.
CPL Pubid: 26122

 

Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Oorganisk miljökemi (2005-2014)

Ämnesområden

Kemi

Chalmers infrastruktur