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首页> 外文期刊>Physical Review, B. Condensed Matter >Artificially ordered Fe-Cu alloy superlattices on Cu(001). I. Studies on the structural and magnetic properties
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Artificially ordered Fe-Cu alloy superlattices on Cu(001). I. Studies on the structural and magnetic properties

机译：在Cu（001）上人工订购的Fe-Cu合金超晶格。一，结构磁性能研究

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Metastable fee Fe-Cu alloys in the L1(0) phase have been prepared by stacking one monolayer of Fe and one monolayer of Cu alternately, [Fe(1 ML)/Cu(1 ML)](n) (where n less than or equal to 25) onto a Cu(001) substrate using pulsed-laser deposition. The observed reflection high-energy electron-diffraction oscillations for each Fe and Cu layer and their growth mode as studied by scanning tunneling microscopy indicate a nearly layer-by-layer growth. Alloys up to n=22 (22 bilayers) have fcc(001) structure, then change from fee to bcc structure. Magnetic hysteresis loops measured using the magneto-optical Kerr effect indicate that for 1 less than or equal to n less than or equal to 25 the films are ferromagnetic with the easy axis of magnetization within the plane of the films. For the basic unit of double-layer configuration a Curie temperature of 130 K is estimated. It increases linearly with the number of stackings reaching a saturation value of 400 K at five double layers and beyond. [References: 21]
机译：通过交替堆叠一层Fe和一层Cu（[Fe（1 ML）/ Cu（1 ML）]（n）（其中n小于n）来制备处于L1（0）相的亚稳态Fe-Cu合金使用脉冲激光沉积在Cu（001）衬底上形成一个等于或等于25）的金属。通过扫描隧道显微镜研究，观察到的每个Fe和Cu层的反射高能电子衍射振荡及其生长模式表明几乎逐层生长。 n = 22（22双层）以下的合金具有fcc（001）结构，然后从费用变为bcc结构。使用磁光克尔效应测量的磁滞回线表明，对于1小于或等于n小于或等于25，薄膜是铁磁性的，其易磁化轴位于薄膜平面内。对于双层结构的基本单元，估计居里温度为130K。在五个双层及以上时，随着堆叠数量达到饱和值400 K线性增加。 [参考：21]

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