اثر جانشانی آنتیموان بر ویژگی ساختاری و مغناطیسی گارنت ایتریوم آهن تهیه‌شده به روش سل ژل

نوع مقاله : مقاله پژوهشی

نویسندگان

دانشگاه آزاد اسلامی

چکیده

در این پژوهش نانو بلورک­های گارنت ایتریوم آهن جانشانی شده با آنتیموان با فرمول ساختاری SbxY3-xFe5O12 (Sb-YIG) با 2/0، 1/0، 0x = به روش سل ژل تهیه شدند و اثر جانشانی آنتیموان بر ساختار بلوری توسط پراش­سنج پرتوایکس (XRD) و بیناب­سنجی تبدیل فوریه فروسرخ دور (Far FT-IR) بررسی شد. نتایج نشان ­داد که نمونه­ها علاوه بر فاز گارنت دارای فازهای جانبی YFeO3 (YIP)،  α-Fe2O3و Sb2O4 بودند و با افزایش مقدار جانشانی، فاز گارنت کاهش یافته است. مقدار فاز گارنت و فازهای ناخالصی محاسبه شد و پس از آن درصد فاز آنتیموان جانشانی شده در جایگاه دوازده­وجهی بدست آمد. در پایان، ویژگی­های مغناطیسی نانوذرات با استفاده از مغناطیس­سنج نمونه­ی ارتعاشی(VSM)  بررسی شد که مشخص شد مغناطش اشباع Sb-YIG  با افزایش جانشانی کاهش یافته است.    

کلیدواژه‌ها

عنوان مقاله [English]

Investigation of structural properties of Yttrium Iron Garnet substituted by Antimony fabricated via sol-gel method

نویسندگان [English]

  • Asma pormehr
  • Mohammad Niyaifar
  • Ahmad Hassanpour
Islamic Azad University
چکیده [English]

In this study, antimony substituted yttrium iron garnet with a composition of  (x = 0, 0.1, 0.2) nanoparticles were fabricated by Sol-Gel method. Garnet phase formation were investigated by X-Ray diffraction (XRD) and Fourier transform infrared spectroscopy (Far FT-IR). X-ray diffraction results show that the samples in addition to garnet phase has impurity phases of YIP, α-Fe2O3  and Sb2O4 which are appeared with incease of Sb ion substitution. The garnet phase and impurity phases was calculated using the formula klug. Percentage of the Sb ion in dodecahedral sites were calculated. Finally, Magnetic properties of nanoparticles were investigated using a vibrating sample magnetometer (VSM).The VSM pattern  show that the saturation magnetization of Sb-YIG decreases as increasing the Sb concentration.

کلیدواژه‌ها [English]

  • Sol-gel
  • Yttrium Iron Garnet
  • Antimony
  • Fourier transform infrared spectroscopy
  • Vibrating Sample Magnetometer

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  • تاریخ دریافت: 21 بهمن 1396
  • تاریخ بازنگری: 19 فروردین 1397
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