AU2001285396A1 - A magnetic head - Google Patents

A magnetic head

Info

Publication number: AU2001285396A1
Authority: AU; Australia
Prior art keywords: magnetic head; magnetic; head
Prior art date: 2000-08-15
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.): Abandoned

Application number

AU2001285396A

Inventor

Qing He

Bryan K. Oliver

Patrick J. Ryan

Song S. Xue

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Seagate Technology LLC

Original Assignee

Seagate Technology LLC

Priority date (The priority date 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 date listed.)

2000-08-15

Filing date

2001-08-06

Publication date

2002-02-25

2001-08-06 Application filed by Seagate Technology LLC filed Critical Seagate Technology LLC

2002-02-25 Publication of AU2001285396A1 publication Critical patent/AU2001285396A1/en

Status Abandoned legal-status Critical Current

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
- G11B5/3113—Details for improving the magnetic domain structure or avoiding the formation or displacement of undesirable magnetic domains
- 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
- 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
- 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
- G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
- G11B5/3163—Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic layers

Landscapes

Engineering & Computer Science (AREA)
Manufacturing & Machinery (AREA)
Physics & Mathematics (AREA)
Electromagnetism (AREA)
Magnetic Heads (AREA)
Thin Magnetic Films (AREA)

AU2001285396A 2000-08-15 2001-08-06 A magnetic head Abandoned AU2001285396A1 (en)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
US22532900P	2000-08-15	2000-08-15
US60225329		2000-08-15
PCT/US2001/041567 WO2002015172A1 (en)	2000-08-15	2001-08-06	A magnetic head

Publications (1)

Publication Number	Publication Date
AU2001285396A1 true AU2001285396A1 (en)	2002-02-25

Family

ID=22844450

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AU2001285396A Abandoned AU2001285396A1 (en)	2000-08-15	2001-08-06	A magnetic head

Country Status (7)

Country	Link
US (1)	US6507457B2 (en)
JP (1)	JP2004507013A (en)
CN (1)	CN1446352A (en)
AU (1)	AU2001285396A1 (en)
DE (1)	DE10196514T1 (en)
GB (1)	GB2380852B (en)
WO (1)	WO2002015172A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US6791794B2 (en) *	2000-09-28	2004-09-14	Nec Corporation	Magnetic head having an antistripping layer for preventing a magnetic layer from stripping
JP3362034B2 (en) *	2001-01-16	2003-01-07	ティーディーケイ株式会社	Thin film magnetic head and method of manufacturing the same
US6954342B2 (en) *	2001-04-30	2005-10-11	Hitachi Global Storage Technologies Netherlands B.V.	Underlayer for high amplitude spin valve sensors
US7688545B1 (en)	2002-09-11	2010-03-30	Seagate Technology Llc	Recording head writer with high magnetic moment material at the writer gap and associated process
US7564658B2 (en) *	2004-09-23	2009-07-21	Headway Technologies, Inc.	CoFe insertion for exchange bias and sensor improvement
US20070207439A1 (en) *	2006-03-03	2007-09-06	Lynch Robert P	Endodontic file having a taper defined by a continuously changing concavity
US8274758B2 (en) *	2008-06-12	2012-09-25	Headway Technologies, Inc.	Composite writer shield for improving writer performance
US8320077B1 (en)	2008-12-15	2012-11-27	Western Digital (Fremont), Llc	Method and system for providing a high moment film
US8341826B1 (en) *	2010-04-12	2013-01-01	Western Digital (Fremont), Llc	Method for fabricating a magnetic recording transducer using a split seed layer
US8503135B2 (en)	2011-09-21	2013-08-06	Seagate Technology Llc	Magnetic sensor with enhanced magnetoresistance ratio

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5240740A (en) *	1990-11-26	1993-08-31	Digital Equipment Corporation	Method of making a thin film head with minimized secondary pulses
EP0585930A3 (en) *	1992-09-04	1995-11-22	Read Rite Corp	Thin film magnetic head
US5666250A (en) *	1993-11-23	1997-09-09	Seagate Technology, Inc.	Thin film magnetic heads with thin nickel underlayers
US5703740A (en) *	1995-08-24	1997-12-30	Velocidata, Inc.	Toroidal thin film head
US6195232B1 (en) *	1995-08-24	2001-02-27	Torohead, Inc.	Low-noise toroidal thin film head with solenoidal coil
US5737157A (en) *	1996-10-09	1998-04-07	International Business Machines Corporation	Disk drive with a thermal asperity reduction circuitry using a magnetoresistive sensor
US5805392A (en) *	1996-12-30	1998-09-08	Quantum Corporation	Laminated plated pole pieces for thin film magnetic transducers
US6144534A (en) *	1997-03-18	2000-11-07	Seagate Technology Llc	Laminated hard magnet in MR sensor
US5878481A (en) *	1997-04-28	1999-03-09	Headway Technologies, Inc.	Pole trimming method for fabricating a magnetic transducer structure
US5843521A (en) *	1997-07-21	1998-12-01	Headway Technologies, Inc.	Photoresist frame plated magnetic transducer pole layer employing high magnetic permeability seed layer
JP3415432B2 (en) *	1998-03-31	2003-06-09	ティーディーケイ株式会社	Thin film magnetic head and method of manufacturing the same
JP3484343B2 (en) *	1998-04-28	2004-01-06	Ｔｄｋ株式会社	Thin film magnetic head and method of manufacturing the same
US6169646B1 (en) *	1998-11-18	2001-01-02	Seagate Technology, Inc.	Magnetoresistive shield incorporating seedlayer for anisotropy enhancement
US6222707B1 (en) *	1998-12-28	2001-04-24	Read-Rite Corporation	Bottom or dual spin valve having a seed layer that results in an improved antiferromagnetic layer
US6296955B1 (en) *	1999-05-24	2001-10-02	Read-Rite Corporation	High moment and high permeability transducer structures and formation

2001
- 2001-08-06 DE DE10196514T patent/DE10196514T1/en not_active Withdrawn
- 2001-08-06 AU AU2001285396A patent/AU2001285396A1/en not_active Abandoned
- 2001-08-06 CN CN01814122A patent/CN1446352A/en active Pending
- 2001-08-06 GB GB0303354A patent/GB2380852B/en not_active Expired - Fee Related
- 2001-08-06 WO PCT/US2001/041567 patent/WO2002015172A1/en not_active Ceased
- 2001-08-06 JP JP2002520216A patent/JP2004507013A/en active Pending
- 2001-08-07 US US09/923,981 patent/US6507457B2/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
DE10196514T1 (en)	2003-10-02
JP2004507013A (en)	2004-03-04
GB2380852A (en)	2003-04-16
WO2002015172A1 (en)	2002-02-21
CN1446352A (en)	2003-10-01
GB0303354D0 (en)	2003-03-19
US20020021529A1 (en)	2002-02-21
US6507457B2 (en)	2003-01-14
GB2380852B (en)	2004-06-23

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AU2001272375A1 (en)	2002-02-18	A needle magazine
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AUPQ643100A0 (en)	2000-04-20	A toothbrush
SG109479A1 (en)	2005-03-30	Magnetic head
AU2001285396A1 (en)	2002-02-25	A magnetic head
GB2359183B (en)	2004-04-14	Magnetic head
SG109473A1 (en)	2005-03-30	Magnetoresistance-effect magnetic head
PL351481A1 (en)	2003-04-22	Magnetic head having a magnetic coil
AU2000275152A1 (en)	2002-03-22	Shower head for a shower
SG101440A1 (en)	2004-01-30	Magnetic head
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AU3590101A (en)	2001-09-12	A magnetic actuator
AU2001262207A1 (en)	2001-10-15	A magnetic product
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AU2002216484A1 (en)	2002-06-18	A brush
AUPQ680300A0 (en)	2000-05-11	A method
GB2365377B (en)	2003-08-20	A pipe-chamfering disk
AU2001294455A1 (en)	2002-04-15	A link-twisting arrangement
GB0008148D0 (en)	2000-05-24	A magnetic product
AUPQ713700A0 (en)	2000-05-18	A head for an appliance
AUPQ645400A0 (en)	2000-04-20	A ligand - II
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