کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7835971 1503537 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of annealing temperature on surface morphology and ultralow ferromagnetic resonance linewidth of yttrium iron garnet thin film grown by rf sputtering
ترجمه فارسی عنوان
تاثیر دمای یخ زدگی بر روی مورفولوژی سطحی و طول موج تشدید فرو مغناطیسی نانولوله های آهنی گیرنتیون اتریومی که از طریق اسپکتروفتومتر
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی
We report high-quality yttrium-iron-garnet (YIG; Y3Fe5O12) ultrathin films grown on {111} gadolinium-gallium-garnet (GGG; Gd3Ga5O12) substrates using RF sputtering deposition on an off-stoichiometric target and optimized thermal treatments. We measured a narrow peak-to-peak ferromagnetic resonance linewidth (∆H) whose minimum value was 1.9 Oe at 9.43 GHz for a 60-nm-thick YIG film. This value is comparable to the most recently published value for a YIG thin film grown by pulsed laser deposition. The temperature dependence of the ∆H was investigated systematically, the optimal annealing condition for our growing condition was 875 °C. Structural analysis revealed that surface roughness and crystallinity played an important role in the observed ∆H broadening. Furthermore, the thickness dependence of the ∆H, which indicated that 60 nm thickness was optimal to obtain narrow ∆H YIG films, was also investigated. The thickness dependence of ∆H was understood on the basis of contributions of surface-associated magnon scattering and magnetic inhomogeneities to the ∆H broadening. Other techniques such as transmission electron microscopy, scanning electron microscopy, and X-ray diffraction were used to study the crystalline structure of the YIG films. The high quality of the films in terms of their magnetic properties was expressed through a very low coercivity and high saturation magnetization measured using a vibration sample magnetometer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 435, 30 March 2018, Pages 377-383
نویسندگان
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