欢迎登录材料期刊网

材料期刊网

高级检索

在室温下,应用对靶磁控溅射设备制备了系列Cu(x nm)/CoCrPt(40nm)/Cu(20nm)三明治结构的纳米颗粒膜,随后进行了原位退火.实验发现Cu覆盖层的厚度(x)对颗粒膜的微结构和磁特性有很大影响.样品垂直方向的矫顽力在x=11nm时达到最大,为138kA/m,平行于膜面方向的矫顽力基本上与x的变化无关,且所有的样品都显示出很强的垂直各向异性.退火后的CoCrPt薄膜呈六角密堆积(HCP)结构,AFM和MFM测量显示在x=11nm时,颗粒的平均粒径和磁畴尺寸均为最小.开关场分布(SFD)的测量表明,退火有效地减弱了颗粒间的交换耦合作用.

参考文献

[1] Lee I S;Rhu H;Lee H J et al.[J].Journal of Applied Physics,1999,85:6133.
[2] Soo E W;Wang J P;Smith C J et al.[J].Journal of Magnetism and Magnetic Materials,2001,235:93.
[3] Tanahashi K;Shimizu N;Kikukawa A et al.[J].Journal of Magnetism and Magnetic Materials,2001,235:59.
[4] Ariake J;Honda N;Ouchi K .[J].Journal of the Magnetics Society of Japan,1997,21-S2:509.
[5] Hirayama Y.;Kikukawa A.;Futamoto M.;Honda Y. .Annealing effects on recording characteristics of CoCr-alloy perpendicular magnetic recording media[J].Journal of Applied Physics,2000(9 Pt.3):6890-6892.
[6] Ikeda Y;Sonobe Y;Seltzer G et al.[J].IEEE Transactions on Magnetics,2001,37:1583.
[7] Roy AG.;Nuhfer NT.;Laughlin DE. .Postannealing effects on magnetic properties and microstructure of CoCrPt/Ti perpendicular recording media[J].Journal of Applied Physics,2003(10 Pt.3):8179-8181.
[8] Keitoku T;Ariake J;Honda N et al.[J].Journal of Magnetism and Magnetic Materials,2001,235:34.
[9] Uwazumi H;Shimatsu T;Sakai Y et al.[J].IEEE Transactions on Magnetics,2001,37:1595.
[10] Ariake J.;Honda N.;Ouchi K.;Iwasaki S. .Pt and Pd intermediate layers for controlling Co-Cr-Nb-Pt layer growth in double layered perpendicular magnetic recording media[J].Journal of Magnetism and Magnetic Materials,2002(1):311-316.
[11] Maeda T;Kai T;Kikitsu A et al.[J].Journal of Applied Physics,2002,80:2147.
[12] Pescia D;Zampieri G;Stampanoni M et al.[J].Physical Review Letters,1987,58:933.
[13] Mikuszeit N;Pütter S;Oepen H P.[J].Journal of Magnetism and Magnetic Materials,2003
[14] Frederick M J;Ramanath G .[J].Journal of Applied Physics,2004,95:3202.
[15] Xu Y;Wang J P;Shan Z S .[J].Journal of Magnetism and Magnetic Materials,2001,225:359.
[16] Xu Y;Shan Z S;Wang J P .[J].Journal of Magnetism and Magnetic Materials,2001,232:103.
上一张 下一张
上一张 下一张
计量
  • 下载量()
  • 访问量()
文章评分
  • 您的评分:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%