(1. 湖南大学 材料科学与工程学院，长沙 410082；
2. 中南大学 粉末冶金国家重点实验室，长沙 410083)
摘 要:
关键字: 稀磁半导体；ZnO；铁磁性
Zn1-xNixO diluted magnetic semiconductor
（1. College of Materials Science and Engineering, Hunan University,Changsha 410082, China;
2. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China）
Abstract:A series of Zn1-xNixO(x=0.05, 0.10, 0.15) diluted magnetic semiconductors are fabricated by using sol-gel method, and the products consist of hexagonal nanoparticles with about 70 nm in diameter. The measurement of magnetism was carried out by a vibrating samples magnetometer (VSM), it was found that the samples show ferromagnetism under the room temperature, and with the increase of Ni-ion content, the saturated magnetization increase, but the averaged atomic magnetic moments decrease. The X-ray diffraction results show that there is not any pure nickel or nickel-oxide in the samples and the lattice increases with the content of Ni-ion. It was determined that the Curie temperature of Zn0.9Ni0.1O at about 575 K by M—T curves, which confirmed Zn1−xNixO is ferromagnetism under room-temperature.
Key words: diluted magnetic semiconductor; ZnO; ferromagnetism
