High-cerium-content scandium-doped gadolinium iron garnet magneto-optical crystal as well as preparation method and application thereof

A magneto-optical crystal and garnet technology, which is applied in the field of high-cerium-containing scandium-doped gadolinium-iron garnet magneto-optic crystal and its preparation, can solve the problems of easy corrosion of solvents, harmfulness to human body and environment, etc., and achieve excellent magneto-optical performance, Good crystallinity and good optical uniformity

Active Publication Date: 2020-12-18
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the Pb system cosolvent used in the high temperature solution method and the liquid phase epitaxy method is easy to corrode the crucible, and is harmful to the human body and the environment.

Method used

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  • High-cerium-content scandium-doped gadolinium iron garnet magneto-optical crystal as well as preparation method and application thereof
  • High-cerium-content scandium-doped gadolinium iron garnet magneto-optical crystal as well as preparation method and application thereof
  • High-cerium-content scandium-doped gadolinium iron garnet magneto-optical crystal as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Magneto-optic crystal Gd with high cerium content and scandium-doped gadolinium iron garnet 2.60 Ce 0.36 Ca 0.04 sc 0.96 Fe 4.03 V 0.01 o 12 And preparation method thereof, concrete steps are as follows:

[0028] (1) Synthesis of polycrystalline raw materials: Weigh high-purity Gd according to the stoichiometric ratio 2 o 3 , Fe 2 o 3 Drugs, after being ground and mixed evenly, pressed into tablets, pre-sintered at 800°C for 10 hours, then sintered at 1300°C for 10 hours, after taking out, ground and pressed tablets, and then sintered at 1300°C for 10 hours to obtain Gd 3 Fe 5 o 12 polycrystalline material. The stoichiometric ratio of CeO 2 , NH 4 VO 3 The powder was mixed evenly, pressed into tablets, and then heated and sintered. During sintering, the temperature was kept at 200°C, 400°C, 670°C and 800°C for 2 hours respectively to obtain CeVO 4 polycrystalline powder. The stoichiometric CaCO 3 , Fe 2 o 3 The powder is pre-sintered at 900°C for 10h...

Embodiment 2

[0033] Magneto-optic crystal Gd with high cerium content and scandium-doped gadolinium iron garnet 2.61 Ce 0.33 Ca 0.06 sc 0.87 Fe 4.12 V 0.01 o 12 And preparation method thereof, concrete steps are as follows:

[0034] (1) Synthesis of polycrystalline raw materials: Weigh high-purity Gd according to the stoichiometric ratio 2 o 3 , Fe 2 o 3 Drugs, after being ground and mixed evenly, pressed into tablets, pre-sintered at 800°C for 10 hours, then sintered at 1300°C for 10 hours, after taking out, ground and pressed tablets, and then sintered at 1300°C for 10 hours to obtain Gd 3 Fe 5 o 12 polycrystalline material. The stoichiometric ratio of CeO 2 , NH 4 VO 3 The powder was mixed evenly, pressed into tablets, and then heated and sintered. During sintering, the temperature was kept at 200°C, 400°C, 670°C and 800°C for 2 hours respectively to obtain CeVO 4 polycrystalline powder. The stoichiometric CaCO 3 , Fe 2 o 3The powder is pre-sintered at 900°C for 10h ...

Embodiment 3

[0039] Magneto-optic crystal Gd with high cerium content and scandium-doped gadolinium iron garnet 2.59 Ce 0.37 Ca 0.04 sc 0.83 Fe 4.16 V 0.01 o 12 And preparation method thereof, concrete steps are as follows:

[0040] (1) Synthesis of polycrystalline raw materials: Weigh high-purity Gd according to the stoichiometric ratio 2 o 3 , Fe 2 o 3 Drugs, after being ground and mixed evenly, pressed into tablets, pre-sintered at 800°C for 10 hours, then sintered at 1300°C for 10 hours, after taking out, ground and pressed tablets, and then sintered at 1300°C for 10 hours to obtain Gd 3 Fe 5 o 12 polycrystalline material. The stoichiometric ratio of CeO 2 , NH 4 VO 3 The powder was mixed evenly, pressed into tablets, and then heated and sintered. During sintering, the temperature was kept at 200°C, 400°C, 670°C and 800°C for 2 hours respectively to obtain CeVO 4 polycrystalline powder. The stoichiometric CaCO 3 , Fe 2 o 3 The powder is pre-sintered at 900°C for 10h...

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Abstract

The invention relates to a high-cerium-content scandium-doped gadolinium iron garnet magneto-optical crystal as well as a preparation method and application thereof. The magneto-optical crystal with the chemical formula of Gd3-x-yCexCaySczFe5-z-wVWO 12, is grown by adopting an edge-defined film-fed crystal growth method, wherein x is equal to 0.33-0.54, y is equal to 0.02-0.06, z is equal to 0.45-0.96, and w is equal to 0.01. According to the method, the post-processing technology of the crystal can be simplified, the preparation cost of the crystal is reduced, the crystal growth rate is high,the optical uniformity is good, and the centimeter-scale single crystal can be prepared. By doping a proper amount of Sc, stabilization of an RIG garnet structure is facilitated, unit cells are expanded, the doping amount of Ce in the crystal is increased, the magnetism of the crystal is enhanced, and the high-cerium-content scandium-doped gadolinium iron garnet magneto-optical crystal with goodpermeability, strong magnetism and excellent magneto-optical performance is obtained. The crystal material is expected to be practically applied to devices such as magneto-optical isolators, magneto-optical circulators, magneto-optical modulators and the like.

Description

technical field [0001] The invention belongs to the field of magneto-optic crystal preparation, and in particular relates to a magneto-optic crystal containing high cerium-containing scandium-doped gadolinium-iron garnet and a preparation method and application thereof. Background technique [0002] With the development of photons, optical communications and optoelectronic integrated circuits, human beings have entered the information age. The rapid development of information technology also puts forward new requirements for optical communication materials. As one of the core materials of optical functional information materials, magneto-optical materials have broad development and application prospects, and have attracted the attention of researchers. Among them, the rare earth iron garnet material has the advantages of large Faraday rotation angle, small optical absorption coefficient, high magneto-optical figure of merit, and high magnetization strength, and has been app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/28C30B15/34C30B33/02C30B28/02G02F1/00G02F1/09
CPCC30B29/28C30B15/34C30B33/02C30B28/02G02F1/0036G02F1/09G02F1/093
Inventor 刘海鹏庄乃锋杨燕端刘梦丽胡晓琳陈新
Owner FUZHOU UNIV
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