Magnetization reversal in long chains of submicrometric Co dots
作者:
J. I. Martı´n,
J. Nogue´s,
Ivan K. Schuller,
M. J. Van Bael,
K. Temst,
C. Van Haesendonck,
V. V. Moshchalkov,
Y. Bruynseraede,
期刊:
Applied Physics Letters
(AIP Available online 1998)
卷期:
Volume 72,
issue 2
页码: 255-257
ISSN:0003-6951
年代: 1998
DOI:10.1063/1.120702
出版商: AIP
数据来源: AIP
摘要:
Long chains of 400 nm diam Co dots prepared by combined electron-beam lithography exhibit interesting magnetotransport properties. The magnetoresistance of the chains of dots is markedly different from single Co films, indicating a strongly modified magnetization reversal process. Magnetic force microscopy (MFM) shows that, after magnetic saturation, in the remanent state the single-domain dots are all oriented with their magnetic moment along the chain. A comparison of the magnetoresistance and the MFM reveals that the magnetization reversal occurs by coherent rotation of the magnetic moment in the single-domain dots forming the chain. ©1998 American Institute of Physics.
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