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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Phase evolution and magnetic properties of DC sputtered Fe-Ga (Galfenol) thin films with growth temperatures
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Phase evolution and magnetic properties of DC sputtered Fe-Ga (Galfenol) thin films with growth temperatures

机译：DC溅射Fe-Ga（加苯酚）薄膜具有生长温度的相位演化和磁性

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摘要

We report on the evolution of phases, morphology and magnetic properties of DC magnetron sputtered FeGa thin films with the different growth temperatures: room temperature, 100 degrees C, 200 degrees C, and 300 degrees C These films were grown on Si substrate and were analysed for their morphological, structural and magnetic properties. The X-ray diffraction analysis reveals that the films are nanocrystalline and improve their crystallinity as the growth temperature increases from room temperature to 300 degrees C. Scanning electron microscopy images indicate grain growth and the morphology changes from spherical to platelets with increase in substrate temperatures. The films deposited at room temperature and 100 degrees C show very low magnetization and coercivity. On increasing the substrate temperature to 200 degrees C, it is observed that the M-H curves are isotropic with the films not attaining saturation. At 300 degrees C, there is substantial increase in coercivity and magnetization observed due to the larger grains present in the films. Magnetic properties also depend on in-plane (463 G, 46.557 emu/cc) and out-of-plane (860 G, 42.774 emu/cc) orientations with small anisotropy. Such an increase in magnetic properties is attributed to increase in grain size and change in morphology. (C) 2017 Elsevier B.V. All rights reserved.
机译：我们对相，形态和DC磁控管的磁特性的演变报告溅射FEGA薄膜与不同生长温度：室温，100℃，200℃，和300℃将这些膜生长的Si基板上，并进行分析对于它们的形态，结构和磁特性。 X射线衍射分析表明，该薄膜是纳米晶，提高其结晶度从室温生长温度升高到300℃。用扫描电子显微镜图像表明晶粒生长和从球形的形态变化到血小板与在衬底的温度的增加。该膜在室温下沉积和100℃显示出非常低的磁化强度和矫顽力。上增加衬底温度到200℃，可以观察到的是，M-H曲线是各向同性的膜不饱和实现。在300℃，有在矫顽力和磁化大幅增加观察到归因于较大的晶粒存在于膜。磁特性，可以在面内依赖于（463 G，46.557鸸鹋/立方厘米）和外的平面（860 G，42.774鸸鹋/ cc）的具有小的各向异性取向。磁特性的这种增加归因于增加晶粒大小和形态变化。 （c）2017年Elsevier B.V.保留所有权利。

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