CN101209897A - Magneto-optic glass ceramic and preparation thereof - Google Patents
Magneto-optic glass ceramic and preparation thereof Download PDFInfo
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- CN101209897A CN101209897A CNA2006101353862A CN200610135386A CN101209897A CN 101209897 A CN101209897 A CN 101209897A CN A2006101353862 A CNA2006101353862 A CN A2006101353862A CN 200610135386 A CN200610135386 A CN 200610135386A CN 101209897 A CN101209897 A CN 101209897A
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Abstract
The invention discloses magneto-optic glass ceramic and the preparation method thereof, which belongs to the field of magneto-optical material. The components of glass ceramic are (mole ratio): xSiO2-yAl2O3-zNa2CO3-uReF3 (x=10-90, y=0-50, z=0-40, u=100-(x+y+z), Re=Nd, Yb, Gd, Ce, Pr, Tb, Tm, Dy, Sm, Eu, Ho, Er). The invention is prepared by melt-spinning technique and adopts SiO2, Al2O3, Na2CO3and ReF3 powder as raw materials, and the raw materials are well mixed, heated to 1100-1700 DEG C and the temperature is preserved for 0-10 hours, and then melting fluid is prepared into vitreous body; the vitreous body is annealed to relieve internal stress, continues to be heated to 300-900 DEG C and the temperature is preserved for 0-40 hours. The material has magneto-optical properties.
Description
Technical field
The present invention relates to the magneto-optic memory technique field, especially relate to the glass-ceramic and the preparation technology thereof that contain the rare-earth fluoride nano crystalline substance.
Background technology
Glass-ceramic is glass to be carried out crystallization handle and the glassy phase of acquisition and the matrix material of crystalline phase coexistence.By the control crystallization process,, nanocrystal obtains transparent glass ceramics in the glassy phase thereby being uniformly distributed in.Use the earliest and the widest magneto-optic memory technique is a monocrystalline, and the research of magneto-optic glass is since last century four, the fifties.Studies show that monocrystal material can have more superior magneto-optical property, but the big bulk single crystal difficulty that will prepare high optical quality is big, cost is high.And glass material generally speaking Verdet constant is little, magneto-optical property is not good, preparation technology is simple, cost is low but have, and corrosion resistance and good, has the advantage [with reference to J.Qiu et al, J.Appl.80 (1996) 5297] of good light permeability at visible region.Therefore, as if forming transparent glass ceramics in the monocrystal material introducing glass matrix that will have magneto-optical property, may obtain to combine the novel magneto-optic memory technique of magneto optical single crystal and glass both sides advantage.The present invention adopts melt supercooled method and subsequent heat treatment according to above-mentioned thinking, has prepared the transparent glass ceramics that contains the rare-earth fluoride nano crystalline substance, and this material has magneto-optic effect.
Summary of the invention
The present invention proposes by the behavior of feed glass phase crystallization the rare-earth fluoride nano crystalline substance evenly to be separated out in oxide glass matrix first, thereby acquisition has the method for the transparent glass ceramics magneto-optic memory technique of high Verdet constant; And having proposed to contain the component and the preparation technology thereof of the brilliant transparent glass ceramics of rare-earth fluoride nano first, purpose is to prepare Stability Analysis of Structures, has the novel magneto-optic memory technique of high Verdet constant.
The component of transparent glass glass pottery of the present invention is (mol ratio): xSiO
2-yAl
2O
3-zNa
2CO
3-uReF
3(x=10-90, y=0-50, z=0-40, u=100-(x+y+z), Re=Nd, Yb, Gd, Ce, Pr, Tb, Tm, Dy, Sm, Eu, Ho, Er).
The present invention adopts and to be prepared as follows technology: with the high purity powder raw material according to certain set of dispense than after mixing, be heated to 1100-1700 ℃ and be incubated 0-10 hour, then with the liquation casting forming; The glass block of preparing after annealing, be heated to 300-900 ℃ and be incubated 0-40 hour after, obtain transparent glass ceramics.By control, make the rare-earth fluoride nano crystalline substance be evenly distributed in the oxide glass matrix to component and heat treating regime.
Adopt above design component and preparation technology, successfully obtained to contain the transparent glass ceramics of rare-earth fluoride nano crystalline substance, this material has magneto-optical property.
Transparent glass ceramics of the present invention is compared with magneto-optic glass, can have higher Verdet constant; Compare with existing transparent magneto-optical crystal, have that preparation technology is simple, with low cost, profiled material and material optical quality and the high advantage of chemical stability are easy to get.This transparent glass ceramics has the essential industry application prospect as novel visible district magneto-optic memory technique.
Embodiment
Example 1: with analytically pure SiO
2, Al
2O
3, Na
2CO
3, NdF
3Press 50SiO
2: 27Al
2O
3: 12Na
2CO
3: 11NdF
3After the accurate weighing of the proportioning of (mol ratio), grind and make its uniform mixing half an hour.Powder after grinding is placed platinum crucible, in program control high temperature box type resistance furnace, be heated to 1390 ℃ and be incubated 1 hour, again glass melt is poured into fast in the copper mold of 150 ℃ of preheatings and be shaped; With the glass that obtains put into resistance furnace in 400 ℃ of annealing after 2 hours furnace cooling to eliminate internal stress; Glass reheat to 650 after the annealing ℃ was incubated after 8 hours, promptly obtained hepatic transparent glass ceramics.Under JEM-2010 type transmission electron microscope, observe, be of a size of the NdF of 10-15nm in this glass-ceramic in a large number
3Uniform crystal particles is distributed in the glass basis.This material has magneto-optic effect at visible region after measured.
Example 2: with analytically pure SiO
2, Al
2O
3, Na
2CO
3, NdF
3Press 42SiO
2: 29Al
2O
3: 17Na
2CO
3: 12NdF
3The accurate raw materials weighing of the proportioning of (mol ratio).Powder after grinding is placed platinum crucible, in program control high temperature box type resistance furnace, be heated to 1350 ℃ and be incubated 1 hour, again glass melt is poured into fast in the copper mold of 150 ℃ of preheatings and be shaped; With the glass that obtains put into resistance furnace in 500 ℃ of annealing after 2 hours furnace cooling to eliminate internal stress; Glass reheat to 720 after the annealing ℃ was incubated after 10 minutes, promptly obtained hepatic transparent glass ceramics.Under JEM-2010 type transmission electron microscope, observe, be of a size of the NdF of 15-30nm in this glass-ceramic in a large number
3Uniform crystal particles is distributed in the glass basis.This material has magneto-optic effect at visible region after measured.
Example 3: with analytically pure SiO
2, Al
2O
3, Na
2CO
3, YbF
3Press 50SiO
2: 27Al
2O
3: 12Na
2CO
3: 11YbF
3The accurate raw materials weighing of the proportioning of (mol ratio) is ground and is made its uniform mixing half an hour.Powder after grinding is placed platinum crucible, in program control high temperature box type resistance furnace, be heated to 1370 ℃ and be incubated 1 hour, again glass melt is poured into fast in the copper mold of 150 ℃ of preheatings and be shaped; With the glass that obtains put into resistance furnace in 400 ℃ of annealing after 2 hours furnace cooling to eliminate internal stress; Glass reheat to 630 after the annealing ℃ was incubated after 8 hours, promptly obtained colourless transparent glass ceramics.Under JEM-2010 type transmission electron microscope, observe, be of a size of the YbF of 5-10nm in this glass-ceramic in a large number
3Uniform crystal particles is distributed in the glass basis.This material has magneto-optic effect at visible region after measured.
Claims (3)
1. magneto-optic glass ceramic is characterized in that: its chemical composition is (mol ratio): xSiO
2-yAl
2O
3-zNa
2CO
3-uReF
3, x=10-90 wherein, y=0-50, z=0-40, u=100-(x+y+z), Re=Nd, Yb, Gd, Ce, Pr, Tb, Tm, Dy, Sm, Eu, Ho or Er.
2. the preparation method of the magneto-optic glass ceramic of a claim 1 is characterized in that: adopt the preparation of melt supercooled method.
3. the preparation method of magneto-optic glass ceramic as claimed in claim 2 is characterized in that: adopt SiO
2, Al
2O
3, Na
2CO
3And ReF
3Powder is as raw material, mixes post-heating to 1100-1700 ℃ and be incubated 0-10 hour, then, melting liquid made vitreum; This vitreum continues to be heated to 300-900 ℃ and be incubated 0-40 hour after internal stress is eliminated in annealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101353862A CN101209897A (en) | 2006-12-27 | 2006-12-27 | Magneto-optic glass ceramic and preparation thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101353862A CN101209897A (en) | 2006-12-27 | 2006-12-27 | Magneto-optic glass ceramic and preparation thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101209897A true CN101209897A (en) | 2008-07-02 |
Family
ID=39610176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101353862A Pending CN101209897A (en) | 2006-12-27 | 2006-12-27 | Magneto-optic glass ceramic and preparation thereof |
Country Status (1)
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|---|---|
| CN (1) | CN101209897A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106274937A (en) * | 2016-10-21 | 2017-01-04 | 苏州大成电子科技有限公司 | The panorama of a kind of high security sees railway car |
| CN113176240A (en) * | 2021-05-11 | 2021-07-27 | 河南工业大学 | Preparation method of magneto-optical double-control optical fiber SPR sensor |
-
2006
- 2006-12-27 CN CNA2006101353862A patent/CN101209897A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106274937A (en) * | 2016-10-21 | 2017-01-04 | 苏州大成电子科技有限公司 | The panorama of a kind of high security sees railway car |
| CN113176240A (en) * | 2021-05-11 | 2021-07-27 | 河南工业大学 | Preparation method of magneto-optical double-control optical fiber SPR sensor |
| CN113176240B (en) * | 2021-05-11 | 2023-01-24 | 河南工业大学 | Preparation method of magneto-optical double-control optical fiber SPR sensor |
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Open date: 20080702 |