سنتز و مشخصه یابی نانو ذرات مغناطیسی فریت کبالت به روش هم رسوبی شیمیایی

مهندسی متالورژی و مواد

مقاله 1، دوره 33، شماره 4 - شماره پیاپی 28، دی 1401، صفحه 1-12   

نوع مقاله: علمی و پژوهشی

شناسه دیجیتال (DOI): 10.22067/jmme.2022.75570.1042

نویسندگان

سمانه صاحبیان^{* 1}؛ عبدالکریم سجادی¹؛ زهرا یوسفی²

¹گروه متالورژی و مواد، دانشکده مهندسی، دانشگاه فردوسی مشهد، ایران.

²گروه متالورژی و مواد ، دانشکده مهندسی، دانشگاه فردوسی مشهد، ایران.

چکیده

فریت کبالت ماده‌ای مغناطیسی با ساختار اسپینلی است که به دلیل مغناطش اشباع متوسط، ناهمسان‌گردی مغناطیسی، خواص نوری ویژه دارای کاربردهای گسترده است. در این پژوهش، اثر پارامتر دما بر ساختار و خواص مغناطیسی بلورهای فریت کبالت سنتزشده به روش هم‌رسوبی شیمیایی بررسی شده ‌است. به این منظور، نمونه‌ها در دمای 80، 90، 100 و OC 110 سنتز شدند. برای سنتز فریت کبالت از پتاسیم هیدروکسید با غلظت M، کلرید آهن و کلرید کبالت به نسبت 1:2 استفاده شد. به منظور بررسی ویژگی‌های ساختاری بلورها، از آنالیزهای میکروسکوپ الکترونی روبشی (SEM)، پراش پرتو ایکس (XRD)، طیف‌سنجی مادون قرمز (FTIR) و پراش انرژی پرتوی ایکس (EDS) استفاده شد. خواص مغناطیسی نیز با آنالیز مغناطیس‌سنج نمونه‌ی نوسانی (VSM) بررسی شد. یافته‌ها نشان می‌دهد، افزایش دمای واکنش منجر به افزایش متوسط اندازه‌ی بلور‌ها از 37 به nm 90 و مغناطش اشباع از 32 تا emu/g 5/71 و شده است. نتایج نشان داد که خلوص فریت کبالت با افزایش دمای فرایند افزایش یافته است.

کلیدواژه‌ها

فریت کبالت؛ فرایند هم رسوبی شیمیایی؛ خواص مغناطیسی

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