中国物理B ›› 1997, Vol. 6 ›› Issue (12): 901-912.doi: 10.1088/1004-423X/6/12/004

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STRUCTURES,Pd SPACER POLARIZATION AND MAGNETIC PROPERTIES OF Co-Nb/Pd MULTILAYERS

T.P.Ma1, R.C.Barker1, 梅良模2, 颜世申2, 李民2, 刘宜华2   

  1. (1)Department of Electrical Engineering,Yale University,New Haven CT 06520,U.S.A.; (2)Department of Physics,Shandong University,Jinan 250100,China
  • 收稿日期:1996-09-12 修回日期:1997-01-28 出版日期:1997-12-20 发布日期:1997-12-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China and by the Doctoral Training Foundation of the State Education Commission of China.

STRUCTURES,Pd SPACER POLARIZATION AND MAGNETIC PROPERTIES OF Co-Nb/Pd MULTILAYERS

MEI LIANG-MO (梅良模)a, YAN SHI-SHEN (颜世申)a, LI MIN (李民)a, LIU YI-HUA (刘宜华)a, T.P.Mab, R.C.Barkerb   

  1. a Department of Physics,Shandong University,Jinan 250100,China; b Department of Electrical Engineering,Yale University,New Haven CT 06520,U.S.A.
  • Received:1996-09-12 Revised:1997-01-28 Online:1997-12-20 Published:1997-12-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China and by the Doctoral Training Foundation of the State Education Commission of China.

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摘要： Magnetic multilayers ［Co-Nb(1.5 or 3.6 nm)/Pd(x nm)］40 were fabricated by radio frequency sputtering synthesis.The structures and magnetic properties of the Co-Nb/Pd multilayers were studied by X-ray diffraction,vibrating sample magnetometer,torque magnetometer and ferromagnetic resonance measurements.The oscillatory dependence of the phase structure,the strain,the ferromagnetic inter layer coupling and the spacer polarization of multilayers on the increase of Pd spacer thickness was observed.The relationship among phase structure,strain,inte rlayer coupling and the polarization of Pd spacers was discussed.The magnetic polarization of Pd spacers will enhance the ferromagnetic coupling between magnetic layers and will restrain antiferromagnetic coupling to occur.The spin dependent electron transport along the normal direction of multilayers and its exchange interaction play key roles in causing these oscillatory behaviors.

Abstract: Magnetic multilayers ［Co-Nb(1.5 or 3.6 nm)/Pd(x nm)］40 were fabricated by radio frequency sputtering synthesis.The structures and magnetic properties of the Co-Nb/Pd multilayers were studied by X-ray diffraction,vibrating sample magnetometer,torque magnetometer and ferromagnetic resonance measurements.The oscillatory dependence of the phase structure,the strain,the ferromagnetic inter layer coupling and the spacer polarization of multilayers on the increase of Pd spacer thickness was observed.The relationship among phase structure,strain,inte rlayer coupling and the polarization of Pd spacers was discussed.The magnetic polarization of Pd spacers will enhance the ferromagnetic coupling between magnetic layers and will restrain antiferromagnetic coupling to occur.The spin dependent electron transport along the normal direction of multilayers and its exchange interaction play key roles in causing these oscillatory behaviors.

中图分类号:  (Magnetic properties of interfaces (multilayers, superlattices, heterostructures))

  • 75.70.Cn
61.05.cp (X-ray diffraction) 76.50.+g (Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance) 75.30.Et (Exchange and superexchange interactions) 68.65.Ac (Multilayers) 75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects)