اثر جانشانی کاتیون‌‌های Fe3+ بر ویژگی‌های ساختاری و مغناطیسی ذرات Bi0.5Y2.5-xFe5+xO12 تهیه شده به روش سل-ژل

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه فیزیک، پردیس علوم و تحقیقات خوزستان، دانشگاه آزاد اسلامی، اهواز، ایران

2 دانشگاه آزاد اسلامی

چکیده

در این پژوهش ذرات گارنت ایتریوم آهن بیسموتی جانشانی شده با کاتیون­های Fe3+، Bi0.5Y2.5-xFe5+xO12
(2/0، 1/0، 0/0 x =) به روش سل ژل تهیه شدند. تحلیل الگوهای پراش پرتوی ایکس (XRD)، ساختار تک فاز گارنت را برای نمونه­های با 1/0 و 0/0  x =و وجود فازهای فرعیYFeO3  و هماتیت را برای نمونه 2/0x =  نشان داد. حلقه­های پسماند بدست آمده از مغناطیس­سنج نمونه ارتعاشی (VSM) بیانگر افزایش مغناطش اشباع با جانشانی کاتیون­های Fe3+ است. تغییرات مغناطش با مقدار x بر پایه احتمال اثر حضور یون بیسموت در ساختار گارنت، جهت­گیری گشتاور مغناطیسی کاتیون­های Fe3+ جانشانی شده و همچنین وجود یون­های Fe2+ بحث شده است.     

کلیدواژه‌ها

عنوان مقاله [English]

Effect of Fe3+ cations substitution on structural and magnetic properties of particles Prepared by Sol-Gel Method

چکیده [English]

In this work,  Fe3+ substituted bismuth yttrium iron garnet particles Bi0.5Y2.5-xFe5+xO12 (x=0.0, 0.1, 0.2) were synthesized by the sol-gel method. X-ray diffraction (XRD) patterns confirmed the pure garnet structure for 0.0 and 0.1 samples and formation of YIP and phases in x = 0.2 sample. The results of vibrating sample magnetometer (VSM) measurements represent that saturation magnetization increases with increasing Fe3+cation concentration. These increases assigned to the effects of the bismuth ions in garnet structure, orientation of substituted Fe3+cations magnetic moments and presence of Fe2+cations .

کلیدواژه‌ها [English]

  • Yttrium Iron Garnet
  • bismuth
  • Sol-gel
  • Vibrating Sample Magnetometer

مراجع

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سابقه مقاله

  • تاریخ دریافت: 18 مرداد 1396
  • تاریخ بازنگری: 08 مهر 1396
  • تاریخ پذیرش: 20 آبان 1396

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