Negative magnetization behavior in Co1-xCuxCr2O4 ceramics

作者：Zhu, C. M.; Wang, L. G.; Chen, L.; Li, C. L.; Tian, Z. M.; Yuan, S. L.^*

来源：Materials Letters, 2016, 182: 155-158.

DOI：10.1016/j.matlet.2016.06.116

• Ceramics
• Magnetic materials
• Sol-gel preparation

Co1-xCuxCr2O4 (0.1 <= x <= 0.275) ceramics have been synthesized and identified as having the cubic structure. Doping Cu has the distinct influence on magnetic properties of the samples. Negative magnetization is discovered when content of Cu increases from x=0.125 to 0.25. As doping content increases, the maximum of magnetization in field-cooled curves shows a monotonous decreasing tendency. Whereas, the relative intensity of negative magnetization and the magnetization reversal temperature increase and then decrease presenting the maximums at x=0.225. Especially for x=0.225, negative magnetization behavior is also affected by cooling field and the negative value finally turns to positive at 12 kOe.

• 出版日期2016-11-1
• 单位华中科技大学