表面技術
Online ISSN : 1884-3409
Print ISSN : 0915-1869
65 巻 , 2 号
選択された号の論文の8件中1~8を表示しています
小特集/複合めっきの現状と新たな可能性
解説
研究論文
  • 高根 直人, 成田 博, 曽根原 浩幸, 劉 小晰, 新井 進
    2014 年 65 巻 2 号 p. 99-103
    発行日: 2014/02/01
    公開日: 2015/02/01
    ジャーナル フリー
    Co/Cu multilayers were electrodeposited on brass substrates in a single electrolyte, and their magnetic properties were measured using a vibrating sample magnetometer. Samples with various nanometric layer thicknesses down to 0.2 nm were prepared using a coulomb controller and the relationship between the individual layer thickness and the magnetic properties was investigated. All samples showed in-plane magnetic anisotropy. The maximum coercivity value was obtained when the layer thickness was around 0.5-4 nm, and was almost five times higher than that for thick Co single-layer films. The saturation magnetic moment was strongly related to the Co content of the samples. However, for layer thicknesses of less than 10 nm, the Co content was smaller than that predicted by Faraday's law. Moreover, from a quantitative analysis of the samples, it was found that the mass magnetization of Co in the multilayers decreased as the layers became thinner. The highest squareness ratio of almost 0.9 was exhibited for a layer thickness of around 100 nm. Finally, out-of-plane hysteresis measurements revealed that the magnetic moment became more easily saturated as the layers became thinner.
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