Preparation and Faraday Effect of Magneto-Optical Transparent Dy2 Zr2 O7 Ceramics
The Dy2Zr2O7 powder with an average particle size of～150 nm was prepared by a solid-state reaction meth-od from the chemically precipitated Dy2O3 particle and the commercial ZrO2 powder.After cold isostatically pressing and vacuum sintering,the magneto-optical transparent Dy2Zr2O7 ceramic was successfully fabricated.The obtained Dy2Zr2O7 ceramic material has the typical defective fluorite structure feature with an in-line transmittance of～68%at 635 nm(～88%of the theoretical transmittance).The developed magneto-optical transparent Dy2Zr2O7 ceramic has Ver-det constants of(-182±7),(-118±2),(-48±1)rad·T-1·m-1 at 635 nm,780 nm and 1 064 nm,respectively,which are roughly 1.33-and 1.24-fold higher than the commercial terbium gallium garnet crystal at 635 nm and 1 064 nm,re-spectively.The results show that the Dy2Zr2O7 transparent ceramic is a potential new magneto-optical material.
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