Microstructure and Magnetic Properties of SrFe12O19 Nano-sized Powders Prepared by Sol-Gel Auto-combustion Method with CTAB Surfactant (vol 28, pg 1543, 2014)

被引：13
作者：
Mirkazemi, S. M. [1 ]
Alamolhoda, S. [1 ]
Ghiami, Z. [2 ]
机构：
[1] IUST, Sch Met & Mat Engn, Tehran 1311416846, Iran
[2] Islamic Azad Univ, Dept Mat Engn, Najafabad Branch, Esfahan, Iran
来源：
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2015年 / 28卷 / 05期
关键词：
Strontium hexaferrite; Sol-gel auto-combustion; Surfactant; Magnetic properties; STRONTIUM HEXAFERRITE; BARIUM FERRITE; PARTICLES; COPRECIPITATION; NANOPOWDER; MECHANISM; RATIO;
D O I：
10.1007/s10948-015-2956-2
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this research, nano-sized powders of strontium hexaferrite were synthesized by sol-gel auto-combustion route using stoichiometric ratio of Fe/Sr. The effect cetyltrimethylammonium bromide (CTAB) addition on microstructure and magnetic properties of hexaferrite have been studied. The samples were characterized using X-ray diffraction (XRD), dynamic light scattering (DLS), vibration sample magnetometer (VSM), field emission scanning electron microscope (FESEM), and transmission electron microscope (TEM) techniques. The results revealed that CTAB addition causes a noticeable reduction in the amount of residual alpha-Fe2O3 phase, since presence of CTAB in the sol facilitates the entrance of Sr2+ ions into the reactions of hexaferrite formation. Also, the morphology of the particles was affected by CTAB addition. Irregular-shaped nanoparticles were synthesized without CTAB additions, while platelet-shaped nanoparticles were obtained by CTAB addition. The mechanism of strontium hexaferrite nanopowder formation has been explained. Magnetic measurements in the sample calcined at 800 A degrees C for 1 h represented that CTAB addition increased the coercivity force ((i) H (c)) from 4.9 to 5.2 kOe and maximum magnetization (M (max)) from 48.4 to 60.4 emu/g, respectively.
引用
收藏
页码：1551 / 1558
页数：8
相关论文
共 41 条
  • [1] Optimization of the Fe/Sr ratio in processing of ultrafine strontium hexaferrite powders by a sol-gel autocombustion method
    Alamolhoda, S.
    Ebrahimi, S. A. Seyyed
    Badiei, A.
    [J]. PHYSICS OF METALS AND METALLOGRAPHY, 2006, 102 (Suppl 1) : S71 - S73
  • [2] A study on the formation of strontium hexaferrite nanopowder by a sol-gel auto-combustion method in the presence of surfactant
    Alamolhoda, S
    Ebrahimi, SAS
    Badiei, A
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2006, 303 (01) : 69 - 72
  • [3] [Anonymous], 2012, J MATER SCI
  • [4] MAGNETIC-PROPERTIES OF HYDROTHERMALLY SYNTHESIZED STRONTIUM HEXAFERRITE AS A FUNCTION OF SYNTHESIS CONDITIONS
    ATAIE, A
    HARRIS, IR
    PONTON, CB
    [J]. JOURNAL OF MATERIALS SCIENCE, 1995, 30 (06) : 1429 - 1433
  • [5] PREPARATION OF BARIUM HEXAFERRITE BY A HYDROTHERMAL METHOD - STRUCTURE AND MAGNETIC-PROPERTIES
    BARB, D
    DIAMANDESCU, L
    RUSI, A
    TARABASANUMIHAILA, D
    MORARIU, M
    TEODORESCU, V
    [J]. JOURNAL OF MATERIALS SCIENCE, 1986, 21 (04) : 1118 - 1122
  • [6] Magnetic properties of hematite nanoparticles
    Bodker, F
    Hansen, MF
    Koch, CB
    Lefmann, K
    Morup, S
    [J]. PHYSICAL REVIEW B, 2000, 61 (10) : 6826 - 6838
  • [7] Hexaferrite particles by coprecipitation and lyophilization
    Calleja, A
    Tijero, E
    Martínez, B
    Piñol, S
    Sandiumenge, F
    Obradors, X
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 196 : 293 - 294
  • [8] CTAB-assisted low-temperature synthesis of SrFe12O19 ultrathin hexagonal platelets and its formation mechanism
    Chen, D. Y.
    Meng, Y. Y.
    Zeng, D. C.
    Liu, Z. W.
    Yu, H. Y.
    Zhong, X. C.
    [J]. MATERIALS LETTERS, 2012, 76 : 84 - 86
  • [9] Dean J.A., 2001, Lange's Handbook of Chemistry, V15
  • [10] High-coercivity ferrite magnets prepared by mechanical alloying
    Ding, J
    Miao, WF
    McCormick, PG
    Street, R
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 1998, 281 (01) : 32 - 36
12345