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Epitaxial growth of Fe/Ag single crystal superlattices and their magnetic properties
  • 时间:0
  • 分类:TF1[冶金工程—冶金物理化学] P433[天文地球—大气科学及气象学]
  • 作者机构:[1]Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
  • 相关基金:This study was supported by the National Natural Science Foundation of China (No.50772055).
中文摘要:

有各种各样的频率的单个水晶 Fe/Ag (001 ) 超点阵被制作用超离频真空蒸发免职。挑选水晶电子消息传输方式 Fe 层和层能取向附生地或者在单个水晶 Ag 缓冲区层上种的单个水晶 fcc Ag,这被发现,它被离子横梁在 NaCl 单个水晶薄片上扔帮助免职。超点阵的磁性的大小揭示作为 Ag 层厚度的功能在强磁性和反铁磁性之间联合的摆动。当 Ag 厚度比 1.5 nm 大时,摆动时期,是 1 nm (5 Ag 层) ,在对计算价值的好同意。当 Ag 分隔符层的厚度减少到 1 nm 时,联合的摆动从计算变化,它能被归因于根据退火的结果夹层使混合。

英文摘要:

Single crystal Fe/Ag(001) superlattices with various periodicities were fabricated using ultrahigh vacuum evaporation deposition. It was found that single crystal bcc Fe layers and single crystal fcc Ag layers can epitaxially grow on a single crystal Ag buffer layer alternately, which was deposited on NaCl single crystal chips by ion beam assisted deposition. The magnetic measurements of the superlattices reveal an oscillation coupling between ferromagnetism and antiferromagnetism as a function of the Ag layer thickness. The oscillation period, which is 1 nm (5 Ag layers), is in good agreement with the calculated values when the Ag thickness is greater than 1.5 nm. While the thickness of the Ag spacer layer decreases to 1 nm, the oscillation coupling varies from calculations, which can be attributed to the intermixing of the interlayers according to the annealing results.

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