The neutron diffraction studies of a crystal structure of nafe(wxmo1-xo4)2 (x = 0.5; 0.75) at low temperature
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 coordi...
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| Autores principales: | , , , , , , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
D.Ghitu Institute of Electronic Engineering and Nanotechnologies
2016
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/2006743eb35f472b92087fa63dae926d |
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| Sumario: | 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. |
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