Top nailing type copper-manganese alloy magnetic spin valve

• Main Authors: HUI WANG, YUXING XIA
• Format: Patent
• Language: English
• Published: 06.12.2000
• Edition: 7
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; INDUCTANCES; MAGNETS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS

The present invention relates to an upper pinning type cupromanganese magnetic spinning valve, and is characterized by that the structure of magnetic spinning valve prepared by adopting non-magnetic layer doping and magnetic layer-combined pinning process is Co/CuMn/Co-CoO, i. e. in Co/Cu/Co structure, the CuMn alloy layer is substituted for non-magnetic medium layer Cu to reduce low saturated field, then the upper pinning Co-CoO layer is added instead of Co layer so as to further improve its performance. The component of intermediate layer CuMn alloy film is Cu1-x Mnx, X value is 3%-11%, andthe front half-part Co layer of upper pinning layer is obtained by radio-frequency sputtering process, and its rear half-part CaO is prepared by using Ar gas and O2 gas mixture with mixing ratio of 5: 2. It posseses good low-field characteristics and high flexibility, and is applicable to magnetic storage material and sensor, etc.