Abstract
Transition metal oxides Bi 3T 3O 11 (T=Os and Ru) have been synthesized and their macroscopic physical quantities have been measured. Characteristics of the observed data are reminiscent of those of heavy electron systems, though the electronic specific heat coefficient γ is not significantly large. The electrical resistivity and the specific heat of Bi 3Ru 3O 11 suggest the possible non-Fermi liquid behavior of the electrons. It seems to be necessary, however, to consider that the Hall coefficient and the thermoelectric power suggest the existence of the phase change at low temperature.
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