مجله فصل مشترک ها، لایه های نازک و سیستم های با بعد کم
سنتز نانوسیم های کریستالی تلوریوم به وسیله ایجاد لایه نازک از طریق روش تبخیر حرارتی
نوع مقاله : مقاله پژوهشی
نویسندگان
گروه فیزیک، پژوهشکده علوم پایه کاربردی جهاد دانشگاهی
چکیده
نانوساختارهای تلوریوم به دلیل خواص جالبی همچون حسگری گاز، نوررسانایی، پاسخ نوری غیرخطی و پاسخ‌های بزرگ ترموالکتریک یا پیزوالکتریک توجه زیادی را به خود جلب کرده است. نانوسیم‌های کریستالی تلوریومی با موفقیت در فشارهای 0.1، 0.01 و 0.001 میلی بار به وسیله ساخت لایه نازک و روش ساده تبخیر پودر تلوریوم و چگالش بخار آن بر روی زیرلایه شیشه‌ای در دماهای مختلف در یک کوره لوله‌ای سنتز شدند. مورفولوژی و اندازه محصولات با استفاده از میکروسکوپ الکترونی روبشی گسیل میدانی (FESEM) مورد بررسی قرار گرفت. نانوسیم‌های سنتز شده دارای قطرهایی بین 46 تا 100 نانومتر و طول‌هایی تا چند میکرومتر هستند. پراش‌سنجی اشعه ایکس (XRD) برای مشخصه‌یابی ساختار کریستالی محصولات انجام شد. قله‌های نقشه پراش با فرض ساختار کریستالی شش وجهی تلوریم با موفقیت ایندکس شدند.
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