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In this work we present a detailed investigation of the dielectric properties of the oxyborate Fe2OBO3 . This compound exhibits a high dielectric constant at room temperature (epsivr' > 103) for frequencies up to 104 Hz. An impedance spectroscopy analysis of the data reveals an important extrinsic contribution to these high epsivr' values. In order to eliminate the extrinsic contribution, we have...
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