A double-sided garnet single crystal film for magneto-optical detection and a preparation method and application thereof
By using liquid-phase epitaxy to grow Tm, Bi, and Ga co-doped garnet single-crystal thin films on gadolinium gallium garnet substrates, the problems of complexity and poor uniformity in magneto-optical crystal growth were solved, enabling the preparation and industrial application of high-quality thin films.
CN121272546BActive Publication Date: 2026-06-26CHENGDU FEIRITE TECH CO LTD
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Patent Information
- Application Number
- CN202511290992.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-10
- Publication Date
- 2026-06-26
- Estimated Expiration
- 2045-09-10
AI Technical Summary
Technical Problem
Existing magneto-optical crystal growth methods are complex, prone to defects and poor uniformity, making it difficult to fabricate large-size, high-quality magneto-optical imaging crystals.
Method used
Tm, Bi, Ga co-doped garnet single crystal thin films were grown on gadolinium gallium garnet substrates using liquid phase epitaxy. High-quality thin film growth was achieved by adjusting the melt composition and substrate wetting angle and by using K2CO3 to reduce the surface tension of the melt.
Benefits of technology
Large-size, high-quality magneto-optical detection wafers were obtained, with good film thickness uniformity and no melt residue on the surface, making them suitable for industrial production.
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Abstract
The application provides a kind of for magneto-optical detection double-sided garnet single crystal film and its preparation method and application.The preparation method comprises the following steps: using Ga2O3, Tm2O3, Fe2O3, Bi2O3 as raw materials, then adding K2CO3, mixing, melting, to obtain a homogeneous melt;cleaning the substrate;the cleaned substrate is put into the melt, at a temperature of 850-920°C, the substrate rotation speed is 50-110rpm / min, the growth time is 5-15min, after the growth is completed, cleaning, to obtain a kind of for magneto-optical detection double-sided garnet single crystal film according to the application.The application adopts liquid phase epitaxy process, realizes the growth of high-quality thin film, prepares a kind of double-sided single crystal garnet magneto-optical thin film which can be used for magneto-optical detection, the preparation process is simple, the stability is high, and industrial production can be realized.
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