DE3544883C2 - - Google Patents
Info
- Publication number
- DE3544883C2 DE3544883C2 DE19853544883 DE3544883A DE3544883C2 DE 3544883 C2 DE3544883 C2 DE 3544883C2 DE 19853544883 DE19853544883 DE 19853544883 DE 3544883 A DE3544883 A DE 3544883A DE 3544883 C2 DE3544883 C2 DE 3544883C2
- Authority
- DE
- Germany
- Prior art keywords
- magnetic
- leg
- saturation magnetization
- layer
- gap
- 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 - Fee Related
Links
- 230000005291 magnetic effect Effects 0.000 claims description 206
- 230000005415 magnetization Effects 0.000 claims description 55
- 239000000463 material Substances 0.000 claims description 43
- 230000035699 permeability Effects 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 10
- 230000004907 flux Effects 0.000 claims description 6
- 239000010409 thin film Substances 0.000 claims description 4
- 230000002441 reversible effect Effects 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 69
- 210000002414 leg Anatomy 0.000 description 45
- 230000006870 function Effects 0.000 description 12
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 229910000889 permalloy Inorganic materials 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 229910000684 Cobalt-chrome Inorganic materials 0.000 description 2
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000010952 cobalt-chrome Substances 0.000 description 2
- 210000003414 extremity Anatomy 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 210000000689 upper leg Anatomy 0.000 description 2
- 240000007124 Brassica oleracea Species 0.000 description 1
- 235000003899 Brassica oleracea var acephala Nutrition 0.000 description 1
- 235000012905 Brassica oleracea var viridis Nutrition 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000036186 satiety Effects 0.000 description 1
- 235000019627 satiety Nutrition 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
- G11B5/3109—Details
- G11B5/313—Disposition of layers
- G11B5/3143—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding
- G11B5/3146—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding magnetic layers
- G11B5/3153—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding magnetic layers including at least one magnetic thin film coupled by interfacing to the basic magnetic thin film structure
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
- G11B5/245—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track
- G11B5/2452—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track where the dimensions of the effective gap are controlled
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetic Heads (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853544883 DE3544883A1 (de) | 1985-12-18 | 1985-12-18 | Duennfilm-magnetkopf zur senkrechten magnetisierung eines entsprechenden aufzeichnungsmediums |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853544883 DE3544883A1 (de) | 1985-12-18 | 1985-12-18 | Duennfilm-magnetkopf zur senkrechten magnetisierung eines entsprechenden aufzeichnungsmediums |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3544883A1 DE3544883A1 (de) | 1987-06-19 |
| DE3544883C2 true DE3544883C2 (en, 2012) | 1990-12-06 |
Family
ID=6288816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19853544883 Granted DE3544883A1 (de) | 1985-12-18 | 1985-12-18 | Duennfilm-magnetkopf zur senkrechten magnetisierung eines entsprechenden aufzeichnungsmediums |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3544883A1 (en, 2012) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3735148A1 (de) * | 1987-10-16 | 1989-05-03 | Siemens Ag | Duennfilm-magnetkopf mit schichtweisem aufbau |
| WO2003060883A1 (en) * | 2002-01-08 | 2003-07-24 | Seagate Technology Llc | Low saturation induction material for magnetic recording head write pole |
| AU2003230385A1 (en) | 2002-05-13 | 2003-11-11 | Robert Owen Campbell | Magnetic recording head |
| US7595959B2 (en) | 2005-06-29 | 2009-09-29 | Seagate Technology Llc | Recording heads including a magnetically damped write pole and recording systems including such heads |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4219854A (en) * | 1978-12-21 | 1980-08-26 | International Business Machines Corporation | Thin film magnetic head assembly |
-
1985
- 1985-12-18 DE DE19853544883 patent/DE3544883A1/de active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE3544883A1 (de) | 1987-06-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| D2 | Grant after examination | ||
| 8320 | Willingness to grant licenses declared (paragraph 23) | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |