中国物理B ›› 1995, Vol. 4 ›› Issue (6): 462-469.doi: 10.1088/1004-423X/4/6/009

• • 上一篇    

RADIAL CONTRACTION OF THE FIRST KIND OF DUMBBELL DOMAINS SUBJECTED TO A STATIC BIAS FIELD

聂向富1, 刘大鹏2, J. Ben Youssef3, J. M. Desvignes3, H. Le Gall3, 韩宝善4   

  1. (1)Department of Physics, Hebei Teachers University, Shijiazhuang 050016, China; (2)Huabei Institute of Electric Power, Baoding 071003, China; (3)Laboratoire de Magnetisme et Materiaux Magnetiques, C.N.R.S. 92195 Meudon Cedex, France; (4)State Key Laboratory for Magnetism, Institute of Physics, Academia Sinica, Beijing 100080, China
  • 收稿日期:1995-09-23 出版日期:1995-06-20 发布日期:1995-06-20
  • 基金资助:
    Supported in part by the National Natural Science Foundation of China and by the Natural Science Foundation of Hebei Province.

RADIAL CONTRACTION OF THE FIRST KIND OF DUMBBELL DOMAINS SUBJECTED TO A STATIC BIAS FIELD

LIU DA-PENG (刘大鹏)b, HAN BAO-SHAN (韩宝善)abc, NIE XIANG-FU (聂向富)c, J. Ben Youssefd, J. M. Desvignesd, H. Le Galld   

  1. a State Key Laboratory for Magnetism, Institute of Physics, Academia Sinica, Beijing 100080, China;
    b Huabei Institute of Electric Power, Baoding 071003, China; 
    c Department of Physics, Hebei Teachers University, Shijiazhuang 050016, China; 
    d Laboratoire de Magnetisme et Materiaux Magnetiques, C.N.R.S. 92195 Meudon Cedex, France
  • Received:1995-09-23 Online:1995-06-20 Published:1995-06-20
  • Supported by:
    Supported in part by the National Natural Science Foundation of China and by the Natural Science Foundation of Hebei Province.

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摘要： On the basis of the "exercise" experiment and the phenomenon of "self-shrink", the behavior of "less-stable" IDs (first kind of dumbbell domains) in radial contraction under an "exercise" bias field, (Hb)e, was statistically investigated in detail. It was found that the histograms of their stripe-to-bubble transition field, Hsb after exercise, become narrower and shift towards the side of lower Hsb with the increase of (Hb)e. It illustrates how the less-stable IDs lose part of their vertical Bloch lines under different (Hb)e. In addition, it was also found that the curve of the upper boundary of these histograms, (Hsb)max vs. (Hb)e, consists of two segments of straight lines. This discontinuity was proved to be due to self shrink, and the crosspoint of these two lines is just the lower limit of the self-shrink region. Furthermore, a series of photographs were taken to show the effect of radial contraction on less-stable IDs intuitively.

Abstract: On the basis of the "exercise" experiment and the phenomenon of "self-shrink", the behavior of "less-stable" IDs (first kind of dumbbell domains) in radial contraction under an "exercise" bias field, (Hb)e, was statistically investigated in detail. It was found that the histograms of their stripe-to-bubble transition field, Hsb after exercise, become narrower and shift towards the side of lower Hsb with the increase of (Hb)e. It illustrates how the less-stable IDs lose part of their vertical Bloch lines under different (Hb)e. In addition, it was also found that the curve of the upper boundary of these histograms, (Hsb)max vs. (Hb)e, consists of two segments of straight lines. This discontinuity was proved to be due to self shrink, and the crosspoint of these two lines is just the lower limit of the self-shrink region. Furthermore, a series of photographs were taken to show the effect of radial contraction on less-stable IDs intuitively.

中图分类号:  (Domain structure (including magnetic bubbles and vortices))

  • 75.70.Kw
75.70.Ak (Magnetic properties of monolayers and thin films) 75.50.Gg (Ferrimagnetics)