Synthesis and characterization of the pyrochlore Bi1.56Sb1.48−xNbxCo0.96O7 solid solution
作者： Mayouf Sellami , Vincent Caignaert , Ahmed Bekka , Noureddine Bettahar
DOI: 10.1016/J.JALLCOM.2009.12.059
关键词: Nuclear magnetic resonance 、 Analytical chemistry 、 Infrared spectroscopy 、 Pyrochlore 、 Solid solution 、 Paramagnetism 、 Dielectric loss 、 Magnetic susceptibility 、 Niobium 、 Dielectric 、 Chemistry
摘要: Abstract A new pyrochlore solid solution with formula Bi 1.56 Sb 1.48− x Nb Co 0.96 O 7 has been synthesized using ceramic method at 1000 °C. Composition dependencies of cell parameters showed a linear increase niobium fraction. The IR-active bands characteristic and B sites compound have detected by infrared spectroscopy. magnetic susceptibility measurements achieved between 4 300 K indicate paramagnetic behavior an oxidation state “+2” for the cobalt ion. results dielectric show large loss due to residual electronic conductivity.
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