Moldavian Journal of the Physical Sciences (Dec 2016)

The neutron diffraction studies of a crystal structure of nafe(wxmo1-xo4)2 (x = 0.5; 0.75) at low temperature

  • Thanh, V.,
  • Cozlenco, Denis,
  • Sangaa, D.,
  • Kicianov, Serghei,
  • Lukin, Evghenii,
  • Khiem, L.,
  • Nyam-Ochir, L.,
  • Gerelmaa, O.,
  • Savenco, B

Journal volume & issue
Vol. 15, no. 3-4
pp. 119 – 124

Abstract

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The crystal structure of the double tungstates NaFe(W0.5Mo0.5O4)2 and NaFe(W0.75Mo0.25O4)2 has been studied by means of a neutron diffraction method in temperature range 5-24 K. No evidence for long range magnetic order was found in both compounds down to 5 K. The unit cell parameters, atomic coordinates, bond lengths and angles for the studied compounds have been obtained. An absence of magnetic ordering is explained by reduction of super-exchange coupling due to a disordering of a Fe-O-O-Fe trapeze-like crystal unit.