Study of Charge Ordering by Electron Diffraction

V. Kumar

Monoclinic Nb12O29 shows a very interesting feature being both metallic and anti ferromagnetic with the Neel temperature at 12K (left). The magnetic ordering is attributed to the charge ordering wherein half of the unpaired electrons contribute to the localization of the charge on a specific site or a group of sites and the other half being itinerant (fully delocalized) leading to the metallic nature.

Since Electron Diffraction contains most of the charge information as compared to Xray or Neutron diffraction, hence Parallel Beam Quantitative Nano-ED (right) has been used to study the charge ordering in monoclinic Nb12O29 material.

To see the movie, please download (Flash, 1 MB).

Back to top