High Quality Magnetic Oxide Thin Films Prepared via Aqueous Solution Processing,Chemistry of Materials

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High Quality Magnetic Oxide Thin Films Prepared via Aqueous Solution Processing
Chemistry of Materials ( IF 7.2 ) Pub Date : 2016-07-14 00:00:00 , DOI: 10.1021/acs.chemmater.6b01001
Peter Richter ₁ , Paul N. Plassmeyer ₂ , Julia Harzdorf ₃ , Tobias Rüffer ₃ , Heinrich Lang ₃ , Jana Kalbacova ₁ , Nathanael Jöhrmann ₄ , Steffen Schulze ₄ , Michael Hietschold ₄ , Sri Sai Phani Kanth Arekapudi _{5,

6} , Manfred Albrecht _{5,

6} , Dietrich R.T. Zahn ₁ , Catherine J. Page ₂ , Georgeta Salvan ₁

Affiliation

Recent progress in multiferroic materials and spintronic devices has renewed interest in metal oxide ferromagnetic and ferrimagnetic materials. Here, we report the preparation of thin films of nanocrystalline ferrimagnetic CoFe₂O₄ (CFO) using an environmentally benign aqueous solution processing route. The evolution of the structural, optical, and magnetic properties as a function of postdeposition annealing temperature is reported. For the highest annealing temperature (800 °C), the remanence, coercivity, and resistivity values are comparable with those of films fabricated by epitaxial growth methods and exceed the quality of CFO nanocrystals prepared by other wet-chemical syntheses. In addition to the ability to make high quality ferrite films, the aqueous solution processing strategy offers great flexibility for tuning film properties by incorporating or substituting additional transition metal ions.

中文翻译：

通过水溶液处理制备的高质量氧化磁性薄膜

在多铁性材料和自旋电子器件中的最新进展重新引起了对金属氧化物铁磁性和亚铁磁性材料的兴趣。在这里，我们报道了纳米晶亚铁磁性CoFe ₂ O ₄薄膜的制备（CFO）使用对环境无害的水溶液处理路线。据报道结构，光学和磁性能随沉积后退火温度的变化。对于最高的退火温度（800°C），剩磁，矫顽力和电阻率值可与通过外延生长方法制造的薄膜相媲美，并且超过通过其他湿化学合成方法制备的CFO纳米晶体的质量。除了能够制造高质量的铁氧体薄膜外，水溶液处理策略还通过掺入或替代其他过渡金属离子，为调节薄膜性能提供了极大的灵活性。

更新日期：2016-07-14

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