论文标题
DC和AC型裂解仪表仪和原子探针层析成像揭示了Fe和Cu在原子尺度上的混合原子量表
Intermixing of Fe and Cu on the atomic scale by high-pressure torsion as revealed by DC- and AC-SQUID susceptometry and atom probe tomography
论文作者
论文摘要
研究了高压扭转在由CU-14FE（wt。％）组成的过饱和固体溶液制备方面的能力。从微结构研究中，用纳米晶粒获得了稳态。用原子探针断层扫描分析了染色的状态，揭示了增强的溶解度和富含铁的颗粒的存在。 DC滞后环在500°C处退火时，显示出抑制的远程相互作用，并在典型的散装磁滞环中发展。 AS型状态的交流 - 度态值测量结果揭示了超顺磁阻断峰以及磁沮丧的相位的存在，而后者的过渡则遵循Almeida-thou thou thou thou thou-thou-thou-thou-thou thou-thou-thou thou thou thou thou thou thou-thou thou thou thou thou thou thou thou thou thou thou thou thou thou thou thou thou thou thou thou thouless line，与Atom Probe proge tography通过Atom探针进行了微观结构研究。交流 - 振荡法表明，沮丧的状态在250°C下退火而消失。
The capability of high-pressure torsion on the preparation of supersaturated solid solutions, consisting of Cu-14Fe (wt.%), is studied. From microstructural investigations a steady state is obtained with nanocrystalline grains. The as-deformed state is analyzed with atom probe tomography, revealing an enhanced solubility and the presence of Fe-rich particles. The DC-hysteresis loop shows suppressed long range interactions in the as-deformed state and evolves towards a typical bulk hysteresis loop when annealed at 500°C. AC-susceptometry measurements of the as-deformed state reveal the presence of a superparamagnetic blocking peak, as well as a magnetic frustrated phase, whereas the transition of the latter follows the Almeida-Thouless line, coinciding with the microstructural investigations by atom probe tomography. AC-susceptometry shows that the frustrated state vanishes for annealing at 250°C.
