Investigation of size dependent Curie temperature and magnetization of bismuth substituted zinc ferrite (ZnBixFe2−xO4) nanoparticles

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• 作者：Marjaneh Jafari Fesharaki…
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：27
• 期：5
• 页码：4699-4704
• 全文大小：2,077 KB
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• 作者单位：Marjaneh Jafari Fesharaki (1)
  Gholamreza Nabiyouni (2)
  Mansur Aghamohamadi (2)
  Davood Ghanbari (3)
  
  1. Department of Physics, Payame Noor University, P. O. Box 19395-3697, Tehran, Iran
  2. Department of Physics, Faculty of Science, Arak University, P. O. Box 38156-8-8349, Arak, Iran
  3. Young Researchers and Elite Club, Arak Branch, Islamic Azad University, Arak, Iran
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Optical and Electronic Materials
  Characterization and Evaluation Materials
  
• 出版者：Springer New York
• ISSN：1573-482X

文摘

The spinel zinc-bismuth ferrites with nominal composition of ZnBi_xFe_2−xO₄ (x = 0, 0.5, 0.1, 0.15, 0.2, 0.25, 0.3) have been synthesized by ball milling technique. Commercially available bismuth, zinc and iron oxide powders were first mixed and then annealed at 1100 °C in an oxygen environment furnace for 10 h. The samples were then milled for 2 h in a Fritsch mille. The average grain size were estimated from the X-ray line broadening of the (311) reflection and transmission electron microscopy (TEM). The micro and nanostructure investigation was carried out by a scanning electron microscope (SEM) with maximum magnification of 20,000. Magnetic properties of the as-prepared ferrites were studied by means of alternating gradient force magneto-meter (AGFM) and Faraday balance measurement. An increasing bismuth content in ZnBi_xFe_2−xO₄ leads to a decrease in the saturation magnetization, coercive field and Neel temperature. These results can be attributed to the substitution of Bi3+ ions in the ferrite system as nonmagnetic cations.