GB1082308A - Rare earth etc. suboxides - Google Patents
Rare earth etc. suboxidesInfo
- Publication number
- GB1082308A GB1082308A GB44088/64A GB4408864A GB1082308A GB 1082308 A GB1082308 A GB 1082308A GB 44088/64 A GB44088/64 A GB 44088/64A GB 4408864 A GB4408864 A GB 4408864A GB 1082308 A GB1082308 A GB 1082308A
- Authority
- GB
- United Kingdom
- Prior art keywords
- suboxides
- heating
- sesquioxide
- earth
- mixture
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
- H01B1/08—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances oxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/20—Compounds containing only rare earth metals as the metal element
- C01F17/206—Compounds containing only rare earth metals as the metal element oxide or hydroxide being the only anion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/0302—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity characterised by unspecified or heterogeneous hardness or specially adapted for magnetic hardness transitions
- H01F1/0311—Compounds
- H01F1/0313—Oxidic compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/42—Magnetic properties
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Rare-earth suboxides (of La, Pr, Pm, Gd, Dy, Ho, Er, Lu and Y) which are oxygen-deficient relative to the sesquioxide, are dark-coloured, highly magnetic, and electrically semi-conducting. The following have been prepared: GdO1.495, ErO1.489, HoO1.490, LuO1.465, YO1.491. Their resistivity can be lowered by the incorporation of conducting metals, e.g. Ag, Cu. Incorporation (e.g. of copper or silver oxalate) may be combined with the production of the suboxides. Preparation is by partial decomposition of higher oxides in a high vacuum, e.g. 5x10-6 torr. or reducing atmosphere at elevated temperatures or by arc-melting or furnace-heating at 2250-2500 DEG C. a mixture of the sesquioxide and a metal, e.g. same rare-earth as suboxide to be prepared, another rare-earth or iron, copper or nickel. Excess metal is then dissolved by hydrochloric acid. Alternatives are the vacuum-heating of compacted sesquioxide-hydride mixture at 800 DEG C. then heating at 2000 DEG C. in argon, and drying a mixture of the oxalate and another oxalate at 200 DEG C. in He, heating to 300 DEG C. in He, and to 1400 DEG C. in H2. These suboxides may be used in the microwave field and for magnetic cores, as semi-conductors, thermoelectric generators and as elements in lasers.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US33904564A | 1964-01-20 | 1964-01-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1082308A true GB1082308A (en) | 1967-09-06 |
Family
ID=23327258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB44088/64A Expired GB1082308A (en) | 1964-01-20 | 1964-10-29 | Rare earth etc. suboxides |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1082308A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1981002073A1 (en) * | 1980-01-14 | 1981-07-23 | Siemens Ag | Conductance transparent laminate,method for the preparation thereof and utilisation thereof |
-
1964
- 1964-10-29 GB GB44088/64A patent/GB1082308A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1981002073A1 (en) * | 1980-01-14 | 1981-07-23 | Siemens Ag | Conductance transparent laminate,method for the preparation thereof and utilisation thereof |
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