High-Pressure/High-Temperature Synthesis, Crystal Structure,and Electrical Properties of CaCu_3_xFe_xV_4O_12

摘要

A perovskite-like compound of composition CaCu_(3-x)Fe_xV_4O_12 (x = 0.7-1.0) has been synthesized at high pressures (p = 5.0-8.0 G Pa) and temperatures (t = 1000- 1300℃). I ts crystal structure has been determined by X-ray diffraction (sp. gr. Im3, Z= 2, a = 7.3051(5) A), and the principal bond lengths and angles have been evaluated. The electrical conductivity of the high-pressure phase CaCu_2FeV_4O_(12) exhibits metallic behavior.