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Ba4Pr2Fe2Nb8O30 tungsten bronze ceramics have been prepared by a standard solid-state sintering method, and the electrical, dielectric and ferroelectric properties have been determined together with the structure. The structure dependence of ferroelectricity has been investigated by comparing the as-sintered, N2-annealed and O2-annealed samples. The typical relaxor ferroelectric nature is generally...
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