ABSTRACTIn α-C5n-HNO3 the condensation of the room-temperature liquid-like diffuse ring associated with the disorder-order transition around 250 K is studied and the low-temperature. superstructure is examined.It is found that β-C8n-HNO3 exhibits an in-plane incommensurate order at room temperature.Two types of graphite-Br2 are found. Low-temperature phase transitions in C8Br are observed at T1 ≍ 277 K and T2 ≍ 297 K. The room-temperature structure of C14Br is reexamined. Special attention is given to diffuse scattering and incommensurability.
The existence of a new phase of NaOD below 160 K is reported. NQR, NMR and DTA spectra are given and preliminary X-ray powder diffraction measurements are discussed.
Charge-Order Pattern of the Low-Temperature Phase from a Monoclinic Single Domain ofNaV2O5Uniquely Determined by Resonant X-Ray Scattering
