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Yttrium addition and annealing effect on the structural, magnetic, adhesive, and optical properties of CoFeY thin films on glass substrate
Optik ( IF 3.1 ) Pub Date : 2021-11-27 , DOI: 10.1016/j.ijleo.2021.168406
Wen-Jen Liu , Yung-Huang Chang , Chi-Lon Fern , Yuan-Tsung Chen , Ding-Yang Tsai , Chin-Chieh Lin , Shih-Hung Lin , Te-Ho Wu , Po-Wei Chi , Ko-Wei Lin

Co60Fe20Y20 film was sputtered on glass substrate with a 10 nm to 50 nm under four annealed conditions and the structure, magnetic properties, surface energy, and optical property were examined. An amorphous structure of CoFeY films was revealed by an X-ray diffraction analyzer, suggesting that the addition of yttrium (Y) refined the grain size and the annealing temperatures were insufficient to support grain growth. The saturation magnetization (Ms) and low-frequency alternate-current magnetic susceptibility (χac) increased with the increase in the thicknesses and annealing temperatures, suggesting that the thickness effect and Y can refine grain size and induce ferromagnetic spin exchange coupling. The highest Ms and χac of Co60Fe20Y20 film were 735 emu/cm3 and 0.23 at an annealing temperature of 300 °C and 50 nm. The χac value of CoFeY film decreased significantly with the increase in measured frequency, while the maximum χac value increased significantly after heat treatment. The optimal resonance frequency (fres) corresponding to the maximum χac was 50 Hz, indicating the applicability of the film in a low-frequency range. The highest surface energy of the 50 nm was 31.84 mJ/mm2 at 300 °C, while the highest transmittance 58% was observed in as-deposited 10 nm film. The transmittance decreased with the increase in annealing temperatures and thickness. A higher thickness may inhibit photon signal transfer through the film, causing a low transmittance. Moreover, the specific properties of Co60Fe20Y20 films are compared with Co40Fe40B10Y10 films, which indicate that Co60Fe20Y20 films have high maximum χac, surface energy, and transmittance than Co40Fe40B10Y10 films.



中文翻译:

钇的添加和退火对玻璃基板上 CoFeY 薄膜的结构、磁性、粘合性和光学性能的影响

Co 60 Fe 20 Y 20薄膜在4种退火条件下溅射在10nm至50nm的玻璃基板上,并检查其结构、磁性能、表面能和光学性能。X 射线衍射分析仪揭示了 CoFeY 薄膜的无定形结构,这表明添加钇 (Y) 细化了晶粒尺寸,并且退火温度不足以支持晶粒生长。饱和磁化强度(Ms)和低频交流磁化率(χ ac)随着厚度和退火温度的增加而增加,表明厚度效应和 Y 可以细化晶粒尺寸并诱导铁磁自旋交换耦合。最高的 Ms 和 χCo 60 Fe 20 Y 20膜的ac在300℃和50nm的退火温度下为735emu/cm 3和0.23。CoFeY薄膜的χ ac值随着测量频率的增加而显着降低,而热处理后的最大χ ac值显着增加。对应于最大 χ ac的最佳共振频率 (f res )为 50 Hz,表明该薄膜在低频范围内的适用性。50 nm 的最高表面能为 31.84 mJ/mm 2在 300 °C 时,在沉积的 10 nm 薄膜中观察到最高透光率 58%。透射率随着退火温度和厚度的增加而降低。较高的厚度可能会抑制光子信号通过薄膜的传输,从而导致低透射率。此外,将Co 60 Fe 20 Y 20薄膜的具体性能与Co 40 Fe 40 B 10 Y 10薄膜进行了比较,表明Co 60 Fe 20 Y 20薄膜具有比Co 40高的最大χ ac、表面能和透射率铁40 B 10Y 10电影。

更新日期:2021-12-03
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