Interlayer exchange coupling between Co and Co3Pt layers

• Main Authors: I-Ting Chen, 陳宜亭
• Other Authors: An-Cheng Sun
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/08772431427807488920

碩士 === 元智大學 === 化學工程與材料科學學系 === 105 === In this study, we focus on the interaction between Co3Pt hard magnetic layer /Ru metal spacer layer /Co soft magnetic layer. With different thickness of Ru spacer layers, the exchange coupling between the two magnetic layers is observed through the change of magnetic properties. We can find that when the spacer layer thickness increases, the hysteresis loop will change. Spin-flop transition occurs when the thickness of 1nm. The magnetic moment in the parallel state maintain until 3.2kOe. It is found that the slope of the hysteresis loop has three different number with the applied magnetic field. There are three-stage flip phenomenon which is presumed to have antiferromagnetic coupling effect between the two layers. It is presumed that the two layers of ferromagnetic layers have exchange coupling effect. There is a similar RKKY effect. The period becomes 2nm. This result can be used to develop future electronic components