GB1427879A - Neadymium ultraphosphates - Google Patents
Neadymium ultraphosphatesInfo
- Publication number
- GB1427879A GB1427879A GB3656374A GB3656374A GB1427879A GB 1427879 A GB1427879 A GB 1427879A GB 3656374 A GB3656374 A GB 3656374A GB 3656374 A GB3656374 A GB 3656374A GB 1427879 A GB1427879 A GB 1427879A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- compounds
- excess
- inert gas
- phosphoric acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract 6
- 239000002253 acid Substances 0.000 abstract 6
- 239000013078 crystal Substances 0.000 abstract 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract 3
- 239000011261 inert gas Substances 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- 150000001875 compounds Chemical class 0.000 abstract 2
- 239000007789 gas Substances 0.000 abstract 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract 2
- 229910052737 gold Inorganic materials 0.000 abstract 2
- 239000010931 gold Substances 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 229910052684 Cerium Inorganic materials 0.000 abstract 1
- 229910052688 Gadolinium Inorganic materials 0.000 abstract 1
- 229910052765 Lutetium Inorganic materials 0.000 abstract 1
- 229910017493 Nd 2 O 3 Inorganic materials 0.000 abstract 1
- 229910052779 Neodymium Inorganic materials 0.000 abstract 1
- 229910052776 Thorium Inorganic materials 0.000 abstract 1
- 239000003575 carbonaceous material Substances 0.000 abstract 1
- 229910003460 diamond Inorganic materials 0.000 abstract 1
- 239000010432 diamond Substances 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 229910052738 indium Inorganic materials 0.000 abstract 1
- 229910052746 lanthanum Inorganic materials 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 abstract 1
- DZNFWGVDYGAMJB-UHFFFAOYSA-K neodymium(3+);phosphate Chemical compound [Nd+3].[O-]P([O-])([O-])=O DZNFWGVDYGAMJB-UHFFFAOYSA-K 0.000 abstract 1
- 239000005365 phosphate glass Substances 0.000 abstract 1
- 229920000137 polyphosphoric acid Polymers 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 238000010583 slow cooling Methods 0.000 abstract 1
- 238000007738 vacuum evaporation Methods 0.000 abstract 1
- 229910052727 yttrium Inorganic materials 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/10—Inorganic compounds or compositions
- C30B29/16—Oxides
- C30B29/22—Complex oxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/37—Phosphates of heavy metals
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/0855—Phosphates
- C09K11/0872—Phosphates with rare earth metals
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B11/00—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B7/00—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions
- C30B7/14—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions the crystallising materials being formed by chemical reactions in the solution
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B9/00—Single-crystal growth from melt solutions using molten solvents
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/0009—Materials therefor
- G02F1/0036—Magneto-optical materials
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2/00—Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light
- G02F2/02—Frequency-changing of light, e.g. by quantum counters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1688—Stoichiometric laser compounds, i.e. in which the active element forms one component of a stoichiometric formula rather than being merely a dopant
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metallurgy (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Inorganic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- Lasers (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
1427879 Neodymium ultraphosphates; neodymium phosphate glass MAX-PLANCK-GES ZUR FORDERUING DER WISSENSCHAFTEN EV 20 Aug 1974 [21 Aug 1973 9 Jan 1974 26 March 1974] 36563/74 Headings C1A and C1M Compounds of the formula Me x Nd 1-x P 5 O 14 in which Me is Sc, Ga, Y, In, La, Ce, Gd, Lu, Th and/or Cl and x is 0-0À999 in the form of untwinned crystals are made by heating Nd 2 O 3 and, when x# 0 at least one Me 2 O 3 as appropriate, in a vessel of pure gold or of an inert dense carbonaceous material, e.g. B 4 C 3 , SiC, diamond, vitreous C with stoichiometric excess, very pure phosphoric acid or di- or polyphosphoric acid at 500-600‹ C. until the desired crystal size is formed, whereafter excess acid is removed. Compounds in which x = 0À001- 0-999 and in which Me is not La are claimed per se. Glasses may be formed from such compounds by heating to 900-1500‹ C., preferably under a protective gas pressure of 1-100 atmospheres followed by slow cooling. The phosphoric acid may be deuterated or wholly or partly tritiated. In a modification, water containing phosphoric acid is used which is first heated to, e.g. 180-220‹ C. to remove free water. The removal of water may be promoted by a current of-inert gas, e.g. N 3 , O 2 or rare gas. The weight ratio of total oxides to acid is preferably 1: 20-50. When crystal growth is complete, excess acid may be removed by pouring it off through a gold sieve while still hot and traces of acid adhering to the crystals may be removed by vacuum evaporation or by passing moist inert gas thereover. Alternatively, the excess acid may be removed by passing moist inert gas over at 500-600‹ C. The acid may be recovered.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732342182 DE2342182C3 (en) | 1973-08-21 | 1973-08-21 | Neodymium ultraphosphates, process for their production and use |
| DE19742400911 DE2400911C3 (en) | 1974-01-09 | 1974-01-09 | Process for the production of neodymium ultraphosphates |
| DE19742414513 DE2414513C3 (en) | 1974-03-26 | 1974-03-26 | Process for the production of neodymium pentaphosphates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1427879A true GB1427879A (en) | 1976-03-10 |
Family
ID=27185468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3656374A Expired GB1427879A (en) | 1973-08-21 | 1974-08-20 | Neadymium ultraphosphates |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5433240B2 (en) |
| FR (1) | FR2241497B1 (en) |
| GB (1) | GB1427879A (en) |
| IT (1) | IT1020058B (en) |
| NL (1) | NL7411101A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53106686A (en) * | 1977-03-02 | 1978-09-16 | Hitachi Ltd | Production of fluorescent substance |
| JPS54100991A (en) * | 1978-01-27 | 1979-08-09 | Hitachi Ltd | Fluorescent substance |
| CN103922384A (en) * | 2014-04-14 | 2014-07-16 | 陕西科技大学 | A Method of Combining Uniform Precipitation and Heat Treatment to Prepare Cubic Sm2O3 Nanocrystals |
-
1974
- 1974-08-20 GB GB3656374A patent/GB1427879A/en not_active Expired
- 1974-08-20 IT IT2644974A patent/IT1020058B/en active
- 1974-08-20 NL NL7411101A patent/NL7411101A/en not_active Application Discontinuation
- 1974-08-21 FR FR7428710A patent/FR2241497B1/fr not_active Expired
- 1974-08-21 JP JP9603874A patent/JPS5433240B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| IT1020058B (en) | 1977-12-20 |
| FR2241497A1 (en) | 1975-03-21 |
| JPS5051098A (en) | 1975-05-07 |
| JPS5433240B2 (en) | 1979-10-19 |
| FR2241497B1 (en) | 1979-02-09 |
| NL7411101A (en) | 1975-02-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |