Author/Authors :
Izumi، نويسنده , , M and Ohnuki، نويسنده , , H and Kitamura، نويسنده , , Atsushi Sasago، نويسنده , , Y and Hase، نويسنده , , M and Uchinokura، نويسنده , , K and Abe، نويسنده , , S and Suzuki، نويسنده , , H and Nakajima، نويسنده , , T and Kojima، نويسنده , , H and Tanaka، نويسنده , , I and Shibuya، نويسنده , , Y، نويسنده ,
Abstract :
Linear Cu2+ (S = 12) inorganic chain compound CuGeO3 exhibits a spin-Peierls (SP) transition at 14 K. The present report describes the existence of the strong fluctuation and/or the formation of short-range order above 80 K associated with the appearance of the satellite reflection with h/2 k 32 (h:odd, k:integer). It may lead to the explanation of the difference between the χ(T) and the Bonner-Fisher law. The temperature dependence of the b lattice constant and the integral breadth at 040 reflection is consistent with the observation of the softening of the LA phonons along the b axis and the spontaneous strain Δb by Lorenzo et al.
