Growth and magneto-optical characteristic of Dy₂Ti₂O₇ crystal

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• 作者：Junbiao Kang ; Min Ruan ; Xiang Chen ; Chenbin Liu ; Wei Liu ; Feiyun Guo ; Jianzhong Chen ; ^{j.z.chen@fzu.edu.cn" class="auth_mail}
• 关键词：Dy2Ti2O7 ; Czochralski method ; Magneto-optical ; Magnetic susceptibility
• 刊名：Optical Materials
• 出版年：May, 2014
• 年：2014
• 卷：36
• 期：7
• 页码：1266-1269
• 全文大小：852 K

文摘

A pyrochlore crystal with magneto-optical effect - Dy₂Ti₂O₇ crystal with 19-20 mm in diameter and 21 mm in length has been grown by the Czochralski method. The lattice parameters were calculated by X-ray powder diffraction, which revealed that the crystal belongs to cubic system. Absorption spectrum was measured in the visible and near-infrared region at room temperature, which indicated the crystal has low absorption coefficient at 600-760 nm. The specific Faraday rotation of single crystal was measured at room temperature in 532, 633, and 1064 nm. The Verdet constant of Dy₂Ti₂O₇ crystal at 633 nm comes up to 鈭?83 rad/(m T), which is as 1.4 times as that of TGG reported.