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Physical Review B
We have investigated the temperature variation of the unit-cell volume of ReO 3 by neutron diffraction. The lattice parameter and the unit-cell volume decrease continuously as the temperature is increased from T = 2 K to about T = 200 K. After exhibiting minima at about 200 K they increase with increasing temperature linearly up to about 305 K, the maximum temperature investigated during the present experiment. We attribute the negative thermal expansion of ReO 3 to be the results of rigiddoi:10.1103/physrevb.78.134105 fatcat:gmwfkzccjvfbhbsmjpseoqxhri