EP 1377979 A2 20040107 - ANTIFERROMAGNETIC LAYER SYSTEM AND METHODS FOR MAGNETICALLY STORING DATA IN ANTIFERROMAGNETIC LAYER SYSTEMS OF THE LIKE
Title (en)
ANTIFERROMAGNETIC LAYER SYSTEM AND METHODS FOR MAGNETICALLY STORING DATA IN ANTIFERROMAGNETIC LAYER SYSTEMS OF THE LIKE
Title (de)
ANTIFERROMAGNETISCHES SCHICHTSYSTEM UND VERFAHREN ZUR MAGNETISCHEN DATENSPEICHERUNG IN DERARTIGEN ANTIFERROMAGNETISCHEN SCHICHTSYSTEMEN
Title (fr)
SYSTEME DE COUCHES ANTIFERROMAGNETIQUES ET PROCEDES DE STOCKAGE MAGNETIQUE DE DONNEES DANS CE TYPE DE SYSTEME
Publication
Application
Priority
- DE 0201301 W 20020405
- DE 10119380 A 20010412
Abstract (en)
[origin: WO02084647A2] The invention is used in the field of materials engineering and relates to antiferromagnetic layer systems as well as to methods for magnetically storing data that can be used, for example, in computer hard disks. The aim of the invention consists of providing an antiferromagnetic layer system and methods with which a specific writing and reading of information is made possible in antiferromagnetic layer systems of the aforementioned type. To this end, an antiferromagnetic layer system is provided, which consists of at least one ferromagnetic and of at least one antiferromagnetic layer, whereby the Curie temperature of the ferromagnetic layer material is greater than the blocking temperature of the antiferromagnetic layer material. In addition, the ferromagnetic and antiferromagnetic layer(s) are coupled to one another at least with regard to their magnetization configurations by means of exchange anisotropy effects, and the layer thickness of the antiferromagnetic layer(s) is a function of the operating temperature of the employed antiferromagnetic layer system, whereby the layer thicknesses also increase with increasing operating temperatures.
IPC 1-7
G11B 11/105; G11B 11/11; G11B 5/64; G11B 5/65; G11B 5/66; G11B 5/851; G11B 5/852; G11B 5/012; H01F 10/32; G11B 5/74; G11B 5/00
IPC 8 full level
G11B 5/00 (2006.01); G11B 5/02 (2006.01); G11B 5/64 (2006.01); G11B 5/65 (2006.01); G11B 5/66 (2006.01); G11B 5/738 (2006.01); G11B 11/10 (2006.01); G11B 11/105 (2006.01); H01F 10/14 (2006.01); H01F 10/26 (2006.01); H01F 10/32 (2006.01); H01F 41/30 (2006.01); G11B 5/74 (2006.01); G11B 7/135 (2012.01); G11B 9/00 (2006.01)
CPC (source: EP US)
B82Y 10/00 (2013.01 - EP US); B82Y 25/00 (2013.01 - EP US); B82Y 40/00 (2013.01 - EP US); G11B 5/00 (2013.01 - EP US); G11B 7/1387 (2013.01 - EP US); G11B 11/10584 (2013.01 - EP US); G11B 11/10586 (2013.01 - EP US); H01F 10/3218 (2013.01 - EP US); H01F 41/302 (2013.01 - EP US); G11B 5/74 (2013.01 - EP US); G11B 9/1409 (2013.01 - EP US); G11B 11/10504 (2013.01 - EP US); G11B 11/10515 (2013.01 - EP US); G11B 11/10532 (2013.01 - EP US); G11B 2005/0002 (2013.01 - EP US); G11B 2005/0005 (2013.01 - EP US); G11B 2005/0021 (2013.01 - EP US); Y10T 428/32 (2015.01 - EP US)
Citation (search report)
See references of WO 02084647A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 02084647 A2 20021024; WO 02084647 A3 20030731; WO 02084647 A8 20030912; AU 2002308373 A1 20021028; DE 10215505 A1 20021024; EP 1377979 A2 20040107; JP 2004531845 A 20041014; US 2004086750 A1 20040506
DOCDB simple family (application)
DE 0201301 W 20020405; AU 2002308373 A 20020405; DE 10215505 A 20020405; EP 02761864 A 20020405; JP 2002581516 A 20020405; US 47359103 A 20031010