ELECTRICAL AND MAGNETIC PROPERTIES OF SINGLE CRYSTALS OF RARE EARTH TUNGSTEN BRONZES AND URANIUM TUNGSTEN BRONZES.

Rare earth tungsten bronze single crystals have been prepared for the first time by the method of electrolysis. Sodium tungsten bronze single crystals with x ranging between .37 and .81 were also prepared. Powder samples of a new tungsten bronze, uranium tungsten bronze, have been synthesized by a thermal reaction of tungsten trioxide, uranium oxide, and tungsten. Magnetic measurements indicate that uranium is tetravalent in the tungsten bronze compound. All samples were investigated by x-ray diffraction methods. Conductivity measurements were made on all samples and the metallic nature of the cubic rare earth and uranium tungsten bronzes was established. Author