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Insight into magnetic properties in zinc ferrite thin films by tuning oxygen content
Current Applied Physics ( IF 2.4 ) Pub Date : 2021-01-04 , DOI: 10.1016/j.cap.2020.12.015
J.G. Monsalve , C. Ostos , E. Ramos , Juan Gabriel Ramírez , O. Arnache

In this investigation ZnFe2O4 thin films were fabricated by RF magnetron sputtering and the magnetic behavior was examined under the influence of the growth conditions in three types of atmospheres, using near-ambient pressure X-ray photoelectron spectroscopy (NAP-XPS) and vibrating sample magnetometry (VSM). XPS revealed that films under an Ar/O2 ratio 1:2 and 2:1 have Fe/Zn atomic ratios similar to the Fe/Zn stoichiometric composition; while the films deposited in pure Ar atmosphere, showed a formation of Fe ions (Fe0) reduced by Ar ion sputtering. VSM revealed an enhancing of the saturation magnetization for the ZFO in thin films unlike the samples in bulk, suggesting that Fe ions migrate to A sites and the interaction JAB dominates the magnetic properties instead of JBB interaction.



中文翻译:

通过调节氧含量洞察铁氧体锌薄膜的磁性

在这项研究中,ZnRF 2 O 4薄膜是通过RF磁控溅射制备的,并在接近环境压力X射线光电子能谱(NAP-XPS)的条件下,在三种类型的气氛中,在生长条件的影响下研究了磁性。振动样品磁力计(VSM)。XPS显示,在Ar / O 2比为1:2和2:1的情况下,薄膜的Fe / Zn原子比与Fe / Zn化学计量组成相似。而在纯Ar气氛中沉积的薄膜则显示出通过Ar离子溅射还原形成的Fe离子(Fe 0)。VSM揭示了薄膜中ZFO的饱和磁化强度有所增强,这与散装样品不同,这表明Fe离子迁移至A位点,并且相互作用JAB决定了磁性,而不是J BB相互作用。

更新日期:2021-01-06
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