نویسندگان

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

2 گروه مهندسی مواد، دانشگاه آزاد اسلامی، واحد تهران جنوب، تهران، ایران

چکیده

در این پژوهش نمونه‌های هگزافریت باریم با ترکیب (X=Ti,Ce,Sn) 19O8/10Fe3/0X3/0Zr6/0BaZn به روش فعال‌سازی مکانیکی سنتز و به وسیله آنالیزهای حرارتی همزمان (STA)، پراش پرتوی ایکس (XRD)، میکروسکوپ الکترونی روبشی گسیل میدانی (FE-SEM) و مغناطیس‌سنج نمونه مرتعش (VSM) مورد ارزیابی قرار گرفتند. تمامی نمونه‌های سنتز شده به صورت تقریباً تک‌فاز و با میانگین اندازه ذرات در حدود nm 450 و nm 250 به ترتیب برای نمونه آلایش نشده و آلایش شده بودند. تغییرات قابل توجهی در خواص مغناطیسی هگزافریت باریم در اثر جانشینی یون‌های آهن مشاهده شد. طبق نتایج بیشترین میزان مغناطش اشباع (emu/g 1/33) و کمترین نیروی پسماندزدا (Oe 14/18) مربوط به ترتیب مربوط به نمونه با ترکیب 19O8/10Fe3/0Ti3/0Zr6/0BaZn و 19O8/10Fe3/0Sn3/0Zr6/0BaZn بود.

کلیدواژه‌ها

عنوان مقاله [English]

Synthesis and evaluation of physical and magnetic properties of doped barium hexaferrite with BaZn0.6Zr0.3X0.3Fe10.8O19 (X=Ti,Ce,Sn) composition

نویسندگان [English]

  • Seyyed Salman Seyyed Afghahi 1
  • Mojtaba Jafarian 2

چکیده [English]

In this research, barium hexaferrite samples with BaZn0.6Zr0.3X0.3Fe10.8O19 (X=Ti,Ce,Sn) composition were synthesized via mechanical activation method and were evaluated by simultaneous thermal analysis (STA), X-ray diffraction (XRD), field emission electron microscopy (FE-SEM) and vibrating sample magnetometer (VSM). All of the synthesized samples were almost single phase and with average particles size of about 450 nm and 250 nm for samples without and with dopant respectively. Significant change in magnetic properties of barium hexaferrite were observed with effect of substitution of Fe ions. According to the results maximum magnetic saturation (33.1 emu/g) and minimum coercivity force (8.14 Oe) were related to samples with composition of BaZn0.6Zr0.3Ti0.3Fe10.8O19 and BaZn0.6Zr0.3Sn0.3Fe10.8O19 respectively.

کلیدواژه‌ها [English]

  • Barium hexaferrites
  • Mechanical activation
  • microstructure
  • magnetic properties

[1] Zhao L., Lv X., Wei Y., Ma C., Zhao L., "Hydrothermal synthesis of pure BaFe12O19 hexaferrite nanoplatelets under high alkaline system", Journal of Magnetism and Magnetic Materials, 332 (2013) 44-47. [2] Xu X., Park J., Hong Y.K., Lane A.M., "Synthesis and characterization of hollow mesoporous BaFe12O19 spheres", Journal of Solid State Chemistry, 222 (2015) 84-89. [3] Wang Y., Huang Y., Wang Q., "Preparation and magnetic properties of BaFe12O19/Ni0.8Zn0.2Fe2O4 nanocomposite ferrite", Journal of Magnetism and Magnetic Materials, 324 (2012) 3024-3028. [4] Molaei M.J., Ataie A., Raygan S., Picken S.J., "Role of intensive milling in the processing of barium ferrite/magnetite/iron hybrid magnetic nano-composites via partial reduction of barium ferrite", Materials Characterization, 101 (2015) 78-82. [5] Fortes S.S., Duque J.G.S., Macedo M.A., "Nanocrystals of BaFe12O19 obtained by the proteic sol-gel process", Physica B: Condensed Matter, 384 (2006) 88-90. [6] Xu G., Ma H., Zhong M., Zhou J., Yue Y., He Z., "Influence of pH on characteristics of BaFe12O19 powder prepared by sol–gel auto-combustion", Journal of Magnetism and Magnetic Materials, 301 (2006) 383-388. [7] Zhao L., Lv X., Wei Y., Ma C., Zhao L., "Hydrothermal synthesis of pure BaFe12O19 hexaferrite nanoplatelets under high alkaline system", Journal of Magnetism and Magnetic Materials, 332 (2013) 44-47. [8] Xu X., Park J., Hong Y.K., Lane A.M., "Synthesis and characterization of hollow mesoporous BaFe12O19 spheres", Journal of Solid State Chemistry, 222 (2015) 84-89. [9] Yu H.F., " BaFe12O19 powder with high magnetization prepared by acetone- aided coprecipitation", J. Magn. Magn. Mater., 341 (2013) 79-85. [10] Rashad M.M., Ibrahim I.A., "Improvement of the magnetic properties of barium hexaferrite nanopowders using modified co-precipitation method", Journal of Magnetism and Magnetic Materials, 323 (2011) 2158-2164. [11] Pillai V., Kumar P., Multani M.S., Shah D.O., "Structure and magnetic properties of nanoparticles of barium ferrite synthesized using microemulsion processing", Colloids and Surfaces A: Physicochemical and Engineering Aspects, 80 (1993) 69-75. [12] Nabiyouni G., Ghanbari D., Yousofnejad A., Seraj M., "A sonochemical-assisted method for synthesis of BaFe12O19 nanoparticles and hard magnetic nanocomposites", Journal of Industrial and Engineering Chemistry, 20 (2014) 3425-3429. [13] Shafi K.V.P.M., Gedanken A., "Sonochemical approach to the preparation of barium hexaferrite nanoparticles", Nanostructured Materials, 12 (1999) 29-34. [14] Qiu J., Shen H., Gu M., "Microwave absorption of nanosized barium ferrite particles prepared using high-energy ball milling", Powder Technology, 154 (2005) 116-119. [15] Dursun S., Topkaya R., Akdogan N., 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, 38 (2012) 3801-3806. [16] Mendonca Almeida R., Paraguassu W., Soares Pires D., Ribeiro Correa R., de-Araujo Paschoal C.W., "Impedance spectroscopy analysis of BaFe12O19 M-type hexaferrite obtained by ceramic method", Ceramics International, 35 (2009) 2443-2447. [17] Berco P.G., Bertorello H.R., "High-energy ball milling of Ba-hexaferrite/Fe magnetic composite", Journal of Magnetism and Magnetic Materials, 187 (1998) 169-176. [18] Gadaila A.M., Hennicke H.W., "Formation of Barium Hexaferrite", Journal of Magnetism and Magnetic Materials, 1 (1975) 144-152. [19] Acher O., "Modern microwave magnetic materials: Recent advances and trends", Journal of Magnetism and Magnetic Materials, 321 (2009) 2033-2034. [20] Awawdeh M., Bsoul I., Mahmood S.H., "Magnetic properties and Mössbauer spectroscopy on Ga, Al, and Cr substituted hexaferrites", Journal of Alloys and Compounds, 585 (2014) 465-473. [21] Verma S., Pandey O.P., Paesano A., Sharma P., "Comparison of structural and magnetic properties of La3+ substituted BaFe12O19 prepared by different substitution methods", Physica B: Condensed Matter, 448 (2014) 57-59. [22] Li J., Zhang H., Li Q., Li Y., Yu G., "Influence of La-Co substitution on the structure and magnetic properties of low-temperature sintered M-type barium ferrites", Journal of Rare Earths, 31 (2013) 983-987. [23] Kaur T., Kaur B., Bhat B., Kumar S., Srivastava A.K., "Effect of calcinations temperature on microstructure, dielectric, magnetic and optical properties of Ba0.7La0.3Fe11.7Co0.3O19 hexaferrites", Physica B, 456 (2015) 206-212. [24] Zhang M., Zi Z., Liu Q., Zhu X., Liang C., Sun Y., Dai J., "Solvothermal synthesis and magnetic properties of BaFe12−2x(NiTi)xO19 nanoparticles", Journal of Magnetism and Magnetic Materials, 369 (2014) 23-26. [25] Kishimoto M., Kitahata S., Amemiya M., "Structural and Magnetic Properties of BaCoxFe12xO19 (x=0.2, 0.4, 0.6, 1) Nanoferrites Synthesized via Citrate Sol-Gel Method", J. Appl. Phys., 61 (2011) 101-104. [26] Xia A., Du D., Li P., Sun Y., "Crystalline structures and intrinsic magnetic properties of ZnTi-substituted hexagonal M-type Ba ferrite powder", J. Mater. Sci.: Mater. Electron., 22 (2011) 223–227. [27] Zi Z.F., Liu Q.C., Dai J.M., Sun Y.P., "Effects of Ce–Co substitution on the magnetic properties of M-type barium hexaferrites", Solid State Communications, 152 (2012) 894-897. [28] Soman V.V., Nanoti V.M., Kulkarni D.K., "Effect of Substitution of Zn-Ti on Magnetic and Dielectric Properties of BaFe12O19", Physics Procedia, 54 (2014) 30-37. [29] Sharma M., Kashyap S.C., Gupta H.C., "Effect of Mg–Zr substitution and microwave processing on magnetic properties of barium hexaferrite", Physica B: Condensed Matter, 448 (2014) 24-28. [30] Jamalian M., "An investigation of structural, magnetic and microwave properties of strontium hexaferrite nanoparticles prepared by a sol-gel process with doping Sn and Tb", Journal of Magnetism and Magnetic Materials, 378 (2015) 217-220.

تحت نظارت وف بومی