GB1351835A - Ferrimagnetic garnets - Google Patents
Ferrimagnetic garnetsInfo
- Publication number
- GB1351835A GB1351835A GB3024071A GB3024071A GB1351835A GB 1351835 A GB1351835 A GB 1351835A GB 3024071 A GB3024071 A GB 3024071A GB 3024071 A GB3024071 A GB 3024071A GB 1351835 A GB1351835 A GB 1351835A
- Authority
- GB
- United Kingdom
- Prior art keywords
- garnet
- temperature
- radiation
- june
- magnetization
- 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
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/165—Auxiliary devices for rotating the plane of polarisation
- H01P1/175—Auxiliary devices for rotating the plane of polarisation using Faraday rotators
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
- C04B35/2675—Other ferrites containing rare earth metals, e.g. rare earth ferrite garnets
-
- 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
Abstract
1351835 Modulating light BBC BROWN BOVERI & CO Ltd 28 June 1971 [30 June 1970] 30240/71 Heading H4F A garnet of the formula Y 3-x Gd x , Fe 5 O 12 , where 0 # x # 3, is used as a Faraday effect element, for example for linearly polarized microwaves or for optical wavelength 1-7 Á, to give a rotation # of the plane of polarization given by where M is the magnetization, M is the vector of the garnet magnetization projected on to the radiation direction #r, l is the distance travelled by the radiation, and α F is a constant for the garnet which is dependent on temperature and the radiation wavelength. To reduce the effect of temperature variation on #, the garnet is operated at a temperature where dα F /dT is substantially zero, and detailed figures are provided for several values of x and for wavelengths of 1À15 Á and 6 Á. By allowing dα F /dT to be somewhat different from zero, a larger value of α F may be obtained for a particular operating temperature by altering the value of x appropriately. The Faraday element may be used for measuring an electric current, from the induced magnetic field.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH986770A CH521600A (en) | 1970-06-30 | 1970-06-30 | Use of a yttrium iron garnet to influence electromagnetic radiation through the Faraday effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1351835A true GB1351835A (en) | 1974-05-01 |
Family
ID=4356541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3024071A Expired GB1351835A (en) | 1970-06-30 | 1971-06-28 | Ferrimagnetic garnets |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH521600A (en) |
| FR (1) | FR2099984A5 (en) |
| GB (1) | GB1351835A (en) |
| NL (1) | NL7013591A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2239027C3 (en) * | 1972-08-08 | 1981-03-12 | Siemens AG, 1000 Berlin und 8000 München | Magneto-optic Faraday rotator |
-
1970
- 1970-06-30 CH CH986770A patent/CH521600A/en not_active IP Right Cessation
- 1970-09-15 NL NL7013591A patent/NL7013591A/xx unknown
-
1971
- 1971-06-28 FR FR7123454A patent/FR2099984A5/fr not_active Expired
- 1971-06-28 GB GB3024071A patent/GB1351835A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2043690B2 (en) | 1972-08-17 |
| DE2043690A1 (en) | 1972-01-27 |
| NL7013591A (en) | 1972-01-03 |
| FR2099984A5 (en) | 1972-03-17 |
| CH521600A (en) | 1972-04-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |