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  4. Discrepancy of the magnetic behaviors and crystalline structure on the Co/FeMn and FeMn/Co interfaces with ultrathin Pt spacer

稀有金属（英文版）, 2010, 29(5): 473-479. doi: 10.1007/s12598-010-0152-x

1, , 2, , 3, , 4,

1.Department of Materials Physics and Chemistry,University of Science and Technology Beijing,Beijing 100083,China

2.Department of Materials Physics and Chemistry,University of Science and Technology Beijing,Beijing 100083,China

3.Department of Materials Physics and Chemistry,University of Science and Technology Beijing,Beijing 100083,China

4.Department of Materials Physics and Chemistry,University of Science and Technology Beijing,Beijing 100083,China

基金项目:   the New Teachers Foundation of the Ministry of Education of China(200800081030)   the Funding Project for Academic Human Resources Development in Institutions of Higher Learning under the Jurisdiction of Beijing Municipality(PHR201007122)   the National Natural Science Foundation of China(50871014;50831002;50971021;50901007;;2102014)  

Discrepancy of the magnetic behaviors and crystalline structure on the Co/FeMn and FeMn/Co interfaces with ultrathin Pt spacer

LIU Yang 1, , FU Yanqiang 2, , JIN Chuan 3, , FENG Chun 4,

1.Department of Materials Physics and Chemistry,University of Science and Technology Beijing,Beijing 100083,China

2.Department of Materials Physics and Chemistry,University of Science and Technology Beijing,Beijing 100083,China

3.Department of Materials Physics and Chemistry,University of Science and Technology Beijing,Beijing 100083,China

4.Department of Materials Physics and Chemistry,University of Science and Technology Beijing,Beijing 100083,China

Keywords： interfaces

The exchange coupling at the ferromagnetic/antiferromagnetic (FM/AFM) interface is influenced by both the magnetic structure and the crystalline micro-structure.Co/FeMn/Co thin films with 0.4 nm Pt spacer layer inserted into the Co/FeMn and FeMn/Co interface respectively were deposited by means of magnetron sputtering.The two interfaces upon and beneath the FeMn layer show distinct behaviors before and after the Pt spacer inserted.There is a remarkable shrink of the interfacial uncompensated spins within the FeMn bottom interfacial monolayers,whereas a relaxation of the pinning strength of the FeMn interfacial spins along the out-of-plane direction occurs at the top interrace.XRD analysis indicates the Pt layer upon the FeMn layer forms an fcc (002) texture,implying the magnetic discrepancy between the top and bottom FeMn interfaces has crystalline structural origins.

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