Title:
MAGNETORESISTIVE STACK WITHOUT RADIATED FIELD, SENSOR AND MAGNETIC MAPPING SYSTEM COMPRISING SUCH A STACK
Document Type and Number:
WIPO Patent Application WO/2021/053033
Kind Code:
A9
Abstract:
One aspect of the invention relates to a magnetoresistive stack (1) comprising: - a reference layer (2) comprising: • a magnetic layer (21), • an antiferromagnetic layer (24) in exchange coupling with the magnetic layer (21), • a magnetic layer (22) substantially of the same magnetization as the magnetic layer (21), • a spacer layer (23) between the magnetic layers (21, 22) with a thickness for enabling an antiferromagnetic coupling between the magnetic layers (21, 22) of a first coupling intensity, - a free layer (3) having a coercivity of less than 10 microTesla, the free layer (3) comprising: • a magnetic layer (32), • an antiferromagnetic layer (34) in exchange coupling with the magnetic layer (32), • a magnetic layer (31) substantially of the same magnetization as the magnetic layer (32), • a spacer layer (33) between the magnetic layers (31, 32) with a thickness for enabling an antiferromagnetic coupling between the magnetic layers of a second coupling intensity lower than the first coupling intensity, - a third spacer layer (4) separating the reference layer (2) and the free layer (3).
Inventors:
FERMON CLAUDE (FR)
SOLIGNAC AURÉLIE (FR)
PANNETIER-LECOEUR MYRIAM (FR)
SOLIGNAC AURÉLIE (FR)
PANNETIER-LECOEUR MYRIAM (FR)
Application Number:
PCT/EP2020/075896
Publication Date:
May 14, 2021
Filing Date:
September 16, 2020
Export Citation:
Assignee:
COMMISSARIAT ENERGIE ATOMIQUE (FR)
International Classes:
G01R33/09; G01Q60/38; G01R33/12; G01R33/16; G01R33/14
Attorney, Agent or Firm:
LEBKIRI, Alexandre (FR)
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