Low-temperature superstructure and charge-ordering effect in η-Na1.286V2O5
Texte intégral
Figure
Documents relatifs
Preliminary X-ray study of the ordering phase transitions in the inclusion
- Neutron scattering experiments on single crystals have allowed an accurate determination of the magnetic phase diagram of YBa2C~306+x.. With increasing oxygen content
Inelastic scattering of neutrons has revealed soft optic modes at the T point (b* + c* ) of the Brillouin zone both in Rb~ZnC14 and K2ZnC14 which are responsible for the 22.
The observation of anisotropic modulations of the diffuse scattering intensity in reciprocal space demonstrates the existence of orientational correlations at room temperature.. A
Optical observations and differential scanning calorimetry (DSC) show only two phase tran- sitions, one between the crystalline (K) and the mesophase (M), and the other between
Let u, compare our,iiiiulation re,ult, i&.ith the experinient, reported in II), (. The author, iii lo have urea,ureLl the average tilt angle in iree ,tanding iiliii, ;i, ;i
Originally, the ionic model based on a checkerboard- type atomic distribution served to describe the low temperature charge and orbital ordered (COO) phases arising in
Light scattering from the free surface near a second order nematic to smectic a phase