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首页> 外文期刊>Physica, B. Condensed Matter >Effect of carbon mixing on the perpendicular magnetization of[FePt/C]_(n=4)/FePt multilayer nanocomposite films
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Effect of carbon mixing on the perpendicular magnetization of[FePt/C]_(n=4)/FePt multilayer nanocomposite films

机译：碳混合对[FePt / C] _（n = 4）/ FePt多层纳米复合薄膜垂直磁化的影响

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The effect of carbon mixing on the perpendicular magnetization of magnetron sputtered FePt thin filmswas studied using magnetic property measurement, X-ray diffraction, and TEM microscopy.Micromagnetic simulation was carried out to study the effect of texture on the perpendicular coercivity.Unlike general conviction, the mixing of FePt with carbon led to a significant enhancement in theperpendicular magnetization. The maximum enhancement of perpendicular magnetization wasobserved at about 20 vol% of carbon, where carbon amorphous film started to completely enclose theindividual FePt grains. This reason was explained that the epitaxial growth and thus perpendiculartexture of ordered FePt grains were maximized due to the relaxation of coherency for epitaxial growthwhich was maximized in the isolated grains. The perpendicular coercivity reached 8500 Oe, while thein-plane coercivity (1200e) remained negligible. The simulation showed that the enhancement ofperpendicular texture can largely increase the perpendicular coercivity of FePt:C thin film.
机译：通过磁性能测量，X射线衍射和TEM显微镜研究了碳混合对磁控溅射FePt薄膜垂直磁化的影响。进行了微磁模拟研究了织构对垂直矫顽力的影响。 FePt与碳的混合导致垂直磁化的显着增强。在碳的约20vol％处观察到垂直磁化的最大增强，其中碳无定形膜开始完全包封各个FePt晶粒。解释该原因的原因在于，由于外延生长的相干性的松弛在分离的晶粒中达到了最大，因此有序的FePt晶粒的外延生长和垂直织构得以最大化。垂直矫顽力达到8500 Oe，而面内矫顽力（1200e）仍然可以忽略不计。仿真表明，垂直结构的增强可以大大提高FePt：C薄膜的垂直矫顽力。

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