Anisotropy easy axes alignment of deposited Co nanoclusters

作者：Le Roy D^*; Morel R; Brenac A; Notin L

来源：Journal of Magnetism and Magnetic Materials, 2011, 323(1): 127-129.

DOI：10.1016/j.jmmm.2010.08.046

• Nanocluster
• Magnetic anisotropy
• Stoner-Wohlfarth model

We report on a method to orient the easy axes of ferromagnetic nanoclusters during their deposition, with the use of a magnetic field supplied by a set of permanent magnets. This field is applied close to the substrate where the preformed clusters are deposited. The efficiency is demonstrated on an assembly of 4nm Co clusters produced by a sputtering and gas-condensation technique. The magnetization of the deposited clusters measured at 6K exhibits an overall in-plane alignment of the easy axes in the direction of the field applied during deposition, H(D). Using a Stoner-Wohlfarth model, it is estimated that half of the clusters easy axes lie within 35 degrees from HD.

• 出版日期2011-1
• 单位中国地震局