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用真空蒸镀方法制备CoO和Fe_3O_4双层薄膜,然后进行氧化处理,其Hc比单层Fe_3O_4薄膜经氧化后提高250Oe。实验数据表明氧化处理后的双层薄膜可能存在着一种磁的耦合作用。
CoO and Fe_3O_4 bilayer films were prepared by vacuum evaporation method and then oxidized. The Hc was increased by 250 Oe after being oxidized by single-layer Fe_3O_4 thin films. Experimental data show that there may be a magnetic coupling effect on the double-walled oxide film after oxidation treatment.