Amorphous structure of the immiscible Fe<sub>1-y</sub>(Cu<sub>1-x</sub>Ag<sub>x</sub>)<sub>y</sub>alloy system
作者:K Sumiyama、K Nishi、K Suzuki
DOI:10.1088/0953-8984/3/49/003
日期:1991.12.9
Fe1-y(Cu1-xAgx)y alloys sputter deposited on liquid-nitrogen-cooled substrates have been investigated by X-ray diffraction and differential scanning calorimetry measurements. Although this ternary alloy system is of a typically immiscible type in the equilibrium state, a single BCC phase appears at the Fe-rich corner and a single FCC phase at the Cu- and Ag-rich corners, while an amorphous phase appears
Fe1-y (Cu1-xAgx) y 合金溅射沉积在液氮冷却基板上已通过 X 射线衍射和差示扫描量热法测量进行了研究。虽然这种三元合金系统在平衡状态下是典型的不混溶类型,但在富铁角出现单个 BCC 相,在富铜和富银角出现单个 FCC 相,而在中心出现非晶相集中区。在三元非晶合金的干涉函数中,检测到较宽的第一峰和第二和第三峰的分裂,其中峰强度比二元FCC合金弱得多。径向分布函数表明四面体是非晶合金的主要结构单元,正如从硬球或土球的密集随机堆积所预期的那样。
Magnetic properties of ordered FexAg1−x nanowire arrays embedded in anodic alumina membranes
Ordered Fe–Ag alloy nanowirearraysembedded in the nanochannels of anodicaluminamembranes (AAM) were successfully fabricated by electrodeposition. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) observations reveal that the Fe–Ag alloy nanowires were uniformly assembled into the hexagonally ordered nanochannels of AAM. Magnetic measurements show that the perpendicular
通过电沉积成功地制备了嵌入阳极氧化铝膜(AAM)纳米通道中的有序Fe-Ag合金纳米线阵列。扫描电子显微镜(SEM)和透射电子显微镜(TEM)的观察结果表明,Fe-Ag合金纳米线均匀地组装成AAM的六角形有序纳米通道。磁性测量表明,垂直矫顽力(H ^ C ^嵌入在AAM有序铁-银纳米线阵列⊥)作为退火温度(急剧增加Ť甲)上升为300℃至400℃,达到其最大(239.5 Oe〕)中温度在400°C时,然后随着T A从400°C上升到600°C而急剧下降。但是,平行矫顽力没有太大变化(ħ Ç ∥)。在这封信中讨论了这种现象的机理。
Magnetic and magnetotransport properties of nanocrystalline Ag0.85Fe0.15 and Ag0.70Fe0.30 alloys prepared by mechanical alloying
Abstract The magnetic and magnetotransport properties of nanocrystalline Ag 0.85 Fe 0.15 and Ag 0.70 Fe 0.30 alloys have been studied by Mossbauer spectroscopy, magnetization and resistivity measurements. The samples were prepared by mechanical alloying of Fe and Ag powders in a high-energy ball mill. Mossbauer spectroscopy and magnetic measurements of the final milled samples indicate the presence
摘要 通过穆斯堡尔谱、磁化强度和电阻率测量研究了纳米晶Ag 0.85 Fe 0.15 和Ag 0.70 Fe 0.30 合金的磁性和磁传输性能。通过在高能球磨机中机械合金化 Fe 和 Ag 粉末制备样品。最终研磨样品的穆斯堡尔光谱和磁性测量表明存在单域“Fe”颗粒。在 4.2 K 和 8 T 磁场下,样品 Ag 0.85 Fe 0.15 和 Ag 0.70 Fe 0.30 的磁阻值分别为 2.5% 和 5.7%。磁阻行为表明两个最终研磨样品中的簇状玻璃状特征。
Liu, Suwen; Yin, Lunxiang; Koltypin, Yuri, Journal of Magnetism and Magnetic Materials, <hi>2001</hi>, vol. 233, p. 194 - 204