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Preparation and Dielectric Properties of Bi1.5MNb1.5O7 (M = Cu, Mg, Mn, Ni, Zn) Pyrochlore Oxides

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Abstract

Bi1.5MNb1.5O7 (M = Cu, Mg, Mn, Ni, Zn) oxides are prepared by solid-state reactions and are shown, by x-ray diffraction, to have cubic pyrochlore structure with lattice parameters in the range a= 10.495–10.570 Å. The phases with M = Cu, Mg, Mn, and Ni are prepared and characterized for the first time. The 1- and 10-kHz dielectric permittivity and loss tangent of Bi1.5MNb1.5O7 are measured from 80 to 300 K. For M = Mg, Ni, and Zn, ε exhibits a maximum at 130, 150, and ∼90 K, respectively.

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  1. Moscow State Institute of Radio Engineering, Electronics, and Automation (Technical University), pr. Vernadskogo 78, Moscow, 117454, Russia

    V. P. Sirotinkin & A. A. Bush

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  1. V. P. Sirotinkin
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  2. A. A. Bush
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Sirotinkin, V.P., Bush, A.A. Preparation and Dielectric Properties of Bi1.5MNb1.5O7 (M = Cu, Mg, Mn, Ni, Zn) Pyrochlore Oxides. Inorganic Materials 39, 974–977 (2003). https://doi.org/10.1023/A:1025517507623

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