تأثیر نسبت مولی آهن/ باریم بر ترکیب فازی، دمای سنتز، ریزساختار و خواص مغناطیسی هگزافریت باریم

نویسندگان

1 1- گروه مهندسی مواد، دانشکده فنی مهندسی، دانشگاه جامع امام حسین (ع) تهران

2 2- دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، باشگاه پژوهشگران جوان و نخبگان، تهران

چکیده

در این پژوهش، تأثیر نسبت مولی آهن/باریم بر ترکیب فازی، دمای سنتز، ریزساختار و خواص مغناطیسی هگزافریت باریم تهیه شده به‌روش فعال‌سازی مکانیکی بررسی شد. به‌منظور سنتز این ترکیب از نسبت‌های مولی آهن/باریم 12 و 6 استفاده شد. تأثیر نسبت مولی آهن/باریم، زمان آسیاکاری و دمای عملیات حرارتی در تعیین شرایط بهینه برای تولید این ترکیب مورد بررسی قرار گرفت. به‌منظور بررسی‌های فازی، مورفولوژی و خواص مغناطیسی محصول نهایی به‌ترتیب از آزمون پراش اشعه ایکس (XRD)، میکروسکوپ الکترونی روبشی (SEM) و مغناطیس‌سنجی نمونه مرتعش (VSM) استفاده شد. طبق نتایج نسبت مولی آهن/باریم برابر با 6، زمان 10 ساعت آسیا‌کاری و دمای 800 درجه ‌سانتی‌گراد به‌عنوان شرایط بهینه برای تولید این ترکیب به‌صورت تک فاز به‌دست آمد. تصاویر میکروسکوپی الکترونی روبشی نشان‌دهنده ذراتی با مورفولوژی هگزاگونال و تقریباً کروی به‌ترتیب برای نمونه‌های تهیه شده با نسبت‌های مولی آهن/باریم 12 و 6 بود. همچنین طبق بررسی‌های مغناطیسی بیشترین مقدار مغناطش اشباع (emu/g 48/56) و نیروی وادارندگی (Oe 2/5247) برای نمونه سنتز شده با نسبت مولی آهن/باریم 6 حاصل شد.
 

کلیدواژه‌ها

عنوان مقاله [English]

Influence of Fe/Ba Molar Ratio on Phase Composition, Synthesis Temperature, Microstructure and Magnetic Properties of Barium Hexaferrite

نویسندگان [English]

  • S. S. Seyyed Afghahi 1
  • M. Jafarian 2
1 1- Department of Materials Engineering, Faculty of Engineering, Imam Hossein University, Tehran, Iran
2 2- Islamic Azad University, Science and Research Branch, Young Researchers and Elit Club, Tehran, Iran
چکیده [English]

In this study, the effect of Fe/Ba molar ratio was investigated on the phase composition, synthesis temperature, microstructure and magnetic properties of barium hexaferrite prepared via mechanical activation. In order to synthesize this compound, Fe/Ba molar ratios of 12 and 6 were used. The effect of Fe/Ba molar ratio, milling time and heat treatment temperature for achieving the optimal conditions in producing this compound was studied. In order to study the phase, morphology and magnetic properties of the final product, X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Vibrating Sample Magnetometer (VSM) were used respectively. According to the results, Fe/Ba molar ratio of 6, 10 h milling time and temperature of 800 °C were found to be the optimal conditions for producing this compound in a single phase. Scanning electron microscopy images show the hexagonal morphology and almost spherical particles respectively for samples prepared with Fe/Ba molar ratio equal to 12 and 6. Moreover, according to the magnetic studies, the maximum amount of saturation magnetization (56.48 emu/g) and the coercivity force (5247.2 Oe) were obtained for the sample synthesized with Fe/Ba molar ratio of 6.
 

کلیدواژه‌ها [English]

  • Barium hexaferrite
  • Mechanical activation
  • Fe/Ba molar ratio
  • magnetic properties

مراجع

1. Ozeri, H. S., Kucuk, I., and Zkan, H. O., “Improvement in Magnetic Properties of La Substituted BaFe12O19 Particles Prepared with an Unusually Low Fe/Ba Molar Ratio”, Journal of Magnetism and Magnetic Materials, Vol. 323, pp. 1799-1804, 2011.
2. Manikandan, M., and Venkateswaran, C.,“Effect of High Energy Milling on the Synthesis Temperature, Magnetic and Electrical Properties of Barium Hexagonal Ferrite”, Journal of Magnetism and Magnetic Materials, Vol. 358-359, pp. 82-86, 2014.
3. Pullar-Robert, C., “Hexagonal Ferrites: A Review of the Synthesis, and Applications of Hexaferrite Ceramics Properties”, Progress in Materials Science, Vol. 57, pp. 1191-1334, 2012.
4. Xu, G., Ma, H., Zhong, M., Zhou, J., Yue, Y. and He, Z., “Influence of pH on Characteristics of BaFe12O19 Powder Prepared by Sol-Gelauto-Combustion”, Journal of Magnetism and Magnetic Materials, Vol. 301, pp. 383-388, 2006.
6. Zhao, L., Lv, X., Wei, Y., Ma, C., and Zhao, L., “Hydrothermal Synthesis of Pure BaFe12O19 Hexaferrite Nanoplatelets under High Alkaline System”, Journal of Magnetism and Magnetic Materials, Vol. 332, pp. 44-47, 2013.
7. Xu, X., Park, J., Hong, Y. K., and Lane, A. M., “Synthesis and Characterization of Hollow Mesoporous BaFe12O19 Spheres”, Journal of Solid State Chemistry, Vol. 222, pp. 84-89, 2015.
8. Rashad, M. M., and Ibrahim, I. A., “Improvement of The Magnetic Properties Of Barium Hexaferrite Nanopowders Using Modified Co-Precipitation Method”, Journal of Magnetism and Magnetic Materials, Vol. 323, pp. 2158-2164, 2011.
10. Pillai, V., Kumar, P., Multani, M. S., and Shah, D. O., “Structure and Magnetic Properties of Nanoparticles of Barium Ferrite Synthesized using Microemulsion Processing”, Colloids and Surfaces A: Physicochemical and Engineering Aspects,Vol. 80, pp. 69-75, 1993.
11. Nabiyouni, G., Ghanbari, D., Yousofnejad, A., and Seraj, M., “Asonochemical-Assisted Method for Synthesis of BaFe12O19 Nanoparticles and Hard Magnetic Nanocomposites”, Journal of Industrial and Engineering Chemistry, Vol. 20, pp. 3425-3429, 2014.
12. Qiu, J., Shen, H., and Gu, M., “Microwave Absorption of Nanosized Barium Ferrite Particles Prepared using High-Energy Ball Milling”, Powder Technology, Vol. 154, pp. 116-119, 2005.
13. Dursun, S., Topkaya, R., Akdogan, N., and Alkoy, S., “Comparison of the Structural and Magnetic Properties of Submicron Barium Hexaferrite Powders Prepared by Molten Salt and Solid State Calcinations Routes”, Ceramics International,Vol. 38, pp. 3801-3806, 2012.
14. Mendonca Almeida, R., Paraguassu, W., SoaresPires, D., Ribeiro Correa, R., and De-Araujo Paschoal, C. W., “Impedance Spectroscopy Analysis of BaFe12O19 M-Type Hexaferrite Obtained by Ceramic Method”, Ceramics International, Vol. 35, pp. 2443-2447, 2009.
15. Martirosyan, K. S., Galstyan, E., Hossain, S. M., Wang, Y. J., and Litvinov, D., “Barium Hexaferrite Nanoparticles: Synthesis and Magnetic Properties”, Materials Science and Engineering B, Vol. 176, pp. 8-13, 2011.
16. Mendoza-Suarez, G., Matutes-Aquino, J. A., Escalante-Garcia, J. I., Mancha-Molinar, H., Rios-Jara, D., and Johal, K. K., “Magnetic Properties and Microstructure of Ba-Ferrite Powders Prepared by Ball Milling”, Journal of Magnetism and Magnetic Materials, Vol. 223, pp. 55-62, 2001.
17. Xu, P., Han, X., and Wang, M., “Synthesis and Magnetic Properties of BaFe12O19 Hexaferrite Nanoparticles by a Reverse Microemulsion Technique”, The Journal of Physical Chemistry C, Vol. 111, pp. 5866-5870, 2007.
18. Nikkhah-Moshaie, R., SeyyedEbrahimi, S. A., and Ataie, A., “Influence of Stoichiometry on Phase Constitution, Thermal Behavior and Magnetic Properties of Ba-Hexaferrite Particles Prepared via SHS Route”, Materials Science and Engineering A, Vol. 473, pp. 244-248, 2008.
19. Sharma, P., Rocha, R. A., De-Medeiros, S. N., and Paesano, A., “Structural and Magnetic Studies on Barium Hexaferrites Prepared by Mechanical alloying and Conventional Route”, Journal of Alloys and Compounds, Vol. 443, pp. 37-42, 2007.
20. Nowosielski, R., Babilas, R., Dercz, G., Pajak, L., and Wrona, J., “Structure and Properties of Barium Ferrite Powders Prepared by Milling and Annealing”, Archives of Materials Science and Engineering,Vol. 28, pp. 735-742, 2007.
21. Stefan, I., Chiriac, R., Nicolicescu, C., and Ciobanu, M., “Research on Synthesis of Barium Hexaferrite Powders Processed by Mechanical Alloying”, Journal of Optoelectronics and Advanced Materials, Vol. 13, pp. 883-886, 2011.
22. Benito, G., Morales, M. P., Requena, J., Raposo, V., Vazquez, M., and Moya, J. S., “Barium Hexaferrite Monodispersed Nanoparticles Prepared by the Ceramic Method”, Journal of Magnetism and Magnetic Materials, Vol. 234, pp. 65-72, 2001.
23. Babu, V., and Padaikathan, P., “Structure and Hard Magnetic Properties of Barium Hexaferrite with and without La2O3 Prepared by Ball Milling”, Journal of Magnetism and Magnetic Materials, Vol. 241,pp. 85-88, 2002.
24. Tan, G., and Chen, X., “Structure and Multiferroic Properties of Barium Hexaferrite Ceramics”, Journal of Magnetism and Magnetic Materials, Vol. 327, pp. 87-90, 2013.
25. Bsoul, I., and Mahmood, S. H., “Magnetic and Structural Properties of BaFe12-xGaxO19 Nanoparticles”, Journal of Alloys and Compounds, Vol. 489, pp. 110-114, 2010.
26. Manafi, S., and Jafarian, M., “Synthesis of Perovskite CaTiO3 Nanopowders with Different Morphologies by Mechanical Alloying without Heat Treatment”, International Journal of Physical Sciences, Vol. 8, pp. 1277-1283, 2013.
مواد پیشرفته در مهندسی
دوره 36، شماره 1
خرداد 1396
صفحه 13-22

فایل ها

هم رسانی

ارجاع به این مقاله

آمار

ارتقاء امنیت وب با وف ایرانی