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

نوع مقاله : علمی و پژوهشی

نویسندگان

• سمانه صاحبیان ¹
• عبدالکریم سجادی ¹
• زهرا یوسفی ²

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

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

10.22067/jmme.2022.75570.1042

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

موضوعات

• سنتز مواد

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عنوان مقاله [English]

Synthesis and characterization of cobalt ferrite magnetic nanoparticles by chemical co-precipitation method

نویسندگان [English]

• Samane Sahebian ¹
• seyed abdolkarim Sajjadi ¹
• zahra yousefi ²

¹ Department of Material Science and Engineering, Ferdowsi university of Mashhad, Mashhad, Iran.

² Department of Material Science and Engineering, Ferdowsi university of Mashhad, Mashhad, Iran.

چکیده [English]

Cobalt ferrite is a magnetic material with a spinel structure. nano particles of Cobalt ferrite is attractive because of medium supersaturation, magnetic anisotropy,optical properties which causes to wide range applications such as drag delivery, cancer diagnosis and treatment, magneto-sensor, optical fibers and magneto-optical devices. In this investigation, the effect of reaction temperature on structure and magnetic properties of co-precipitated cobalt ferrite nanoparticles was studied. The nanoparticles were synthesized at 80, 90,100 and 110 C. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and vibration sample magnetometer (VSM) were used to charactization of nano particls. The results showed that cobalt ferrite nanoparticles was synthesized at all the reaction temperatures and supersaturation of non-calcination samples was noticeable. According to the results, by increasing the reaction temperature, crystallite size increased from 32 nm to 90 nm and also the magnetic supersaturation increased from 32 from 71.5 emu/g. besides, The purity of cobalt ferrite increased with increasing reaction temperature.

کلیدواژه‌ها [English]

• Cobalt ferrite
• co-precipitation
• magnetic properties

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