研究和评论:材料科学杂雷竞技苹果下载志》上
菜单ISSN: 2321 - 6212
ISSN: 2321 - 6212
费铎Pudonin安娜Boltaev德米特里起来,Igor Sherstnev
期票列别捷夫物理研究所的RAS,俄罗斯
海报和接受抽象:启J垫。Sci >
DOI:10.4172 / 2321 - 6212 c6 - 029
现在已经有很大兴趣的技术获取和研究磁nanoisland电影。这是由于这些对象的巨大的应用潜力。我们使用了射频溅射方法获得nanoisland电影芬尼酒等磁性材料、Co、Ni等。在这份报告中,我们将我们的工作结果获得磁nanoisland电影和一些应用方面的这些结构。由于沉积速率是一个稳定值恒定的技术参数,我们沉积薄膜的有效厚度是由沉积的时间。存在一个临界厚度d *(渗流阈值)低于nanoisland哪些电影,电影和有效厚度> d *成为连续的。确定d *价值,我们已经几个芬尼酒系列电影与有效厚度从0.5到3.0纳米厚度Δ~ 0.07 nm的步骤。标准的抛光陶瓷板(微晶玻璃)、晶体硅、氮化硅、玻璃以及氧化铝薄层沉积在硅被用作基质。图1显示了图像的一些岛屿芬尼酒的电影。确定d *,依赖性的介电常数ε(ω)和电导率σ的厚度进行了研究。发现再保险ε(ω)和δ=σ(T = 300 K) -σ(T = 77 K)同时改变符号在d ~ 1.6 -1.8 nm,这表明存在渗流转变在d * -1.8 ~ 1.6海里。 Thus, FeNi films with an effective thickness d<1.6 nm are island. We have shown that photoconductivity in the range 500-1500 nm, anomalous conductivity in weak electric fields, giant dielectric constant, and other unusual properties are observed in nanoisland films of FeNi and other metals. We proposed to use nanoisland FeNi films in which the effect of anomalous conductivity is observed as labels that can serve as a protection for various documents and securities and other products. Nanoisland films can also be used to create sensors of superweak magnetic fields at room temperature. For this, we fabricated multilayer island structures such as [FeNi/Co]N in figure 2. With the help of X-ray studies it was shown that in such systems the island layers do not mix and they really are periodic structures. It was found that these structures are capable of detecting (changing their resistance) magnetic fields H<10-11 T. This is a great result and we hope to improve it. Recent Publications 1. Boltaev A P, Pudonin F A, Sherstnev I A and Egorov D A (2017) Detection of the metal-insulator transition in disordered systems of magnetic nanoislands. Journal of Experimental and Theoretical Physics 125(3):465-468. 2. Boltaev A P, N A Penin, A O Pogosov and Pudonin F A (2003) Detection of photoconductivity in hyperfine metal films in the visible and infrared spectral regions. Journal of Experimental and Theoretical Physics 96(5):940-944. 3. Boltaev A P and Pudonin F A (2006) Effect of weak electric fields on the conduction in thin metal films. Journal of Experimental and Theoretical Physics 103(3):436-440. 4. Boltaev A P, Pudonin F A and Sherstnev I A (2015) Low-frequency giant effective permittivity of island metal films. Physics of the Solid State 57(10):2099–2105. 5. Boltaev A P, Pudonin F A and Sherstnev I A (2011) Specific features of the magnetoresistance in multilayer systems of magnetic nanoislands in weak magnetic fields. Physics of the Solid State 53(5):950.
费铎Pudonin期票实验室的负责人列别捷夫物理研究所俄罗斯科学院,俄罗斯。他是异构系统的首席研究员在实验室物理。
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