Magnetic Properties and Magnetoresistance of CdMnS:Au Based Structures Prepared by Co-evaporation

作者：He Jun; Li Ming; Kim D H; Lee J C; Lee D J; Fu De Jun^*; Kang T W

来源：Chinese Physics Letters, 2010, 27(7): 078501.

DOI：10.1088/0256-307X/27/7/078501

Polycrystalline CdMnS and CdMnS:Au films with hexagonal structure on Si(111) substrates are prepared by co-evaporation, and exhibit ferroelectric and ferromagnetic properties, respectively. Under optimized growth conditions, CdMnS: Au samples with an average crystallite size of 90 nm and Mn concentration of 5.0 at.% are obtained, and an all-semiconductor spin valve device of Co/Au/CdMnS:Au/CdMnS/Pt is fabricated. Electrical measurement of the device reveals the clear dependence of resistance on applied magnetic field, with a relative magnetoresistance of 0.06% and a switching field of 100 Oe at 77 K.

• 出版日期2010-7
• 单位武汉大学