Evidence of Superparamagnetism in Mg0.5Mn0.5Fe2O4 Nanosized Ferrite

被引：5
作者：
Abdallah, Hafiz M. I. [1 ]
Moyo, Thomas [1 ]
机构：
[1] Univ KwaZulu Natal, Sch Chem & Phys, ZA-4000 Durban, South Africa
来源：
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2015年 / 28卷 / 03期
基金：
新加坡国家研究基金会;
关键词：
Nanoferrite; BET surface area; Surface effect; Superparamagnetism; MAGNETIC-PROPERTIES; NANOFERRITES; NANOCRYSTALS; SYSTEMS; ROUTE;
D O I：
10.1007/s10948-014-2782-y
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Nanosized Mg0.5Mn0.5Fe2O4 spinel ferrite was produced via a glycol-thermal route from high-purity metal chlorides. X-ray powder diffraction and transmission electron microscope were used to investigate the structure and morphology of the compound. The results show formation of single-phase structure with average particle size of about 8.6 nm. The Brunauer-Emmett-Teller (BET) specific surface area and mesopore volume was found to be 86.9 and 0.21 cm(3)g(-1) respectively. The evolution of the magnetic properties as a function of measuring temperature was investigated by using a cryogen-free measurement of vibrating sample magnetometer (VSM) system. The results indicate a superparamagnetic behaviour of the sample. The results also show the coercive field, saturation and remanent magnetizations, experimental magnetic moment and squareness of the loops increased with decreasing temperatures.
引用
收藏
页码：955 / 960
页数：6
相关论文
共 20 条
[1]   Mossbauer and Electrical Studies of MnxCo1-xFe2O4 Compounds Prepared via Glycothermal Route [J].
Abdallah, H. M. I. ;
Moyo, T. ;
Msomi, J. Z. .
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, 2011, 24 (1-2) :669-673
[2]   Structural and Mossbauer studies of Mn0.5Co0.5Fe2O4 ferrites prepared by high energy ball milling and glycolthermal methods [J].
Abdallah, H. M. I. ;
Moyo, T. ;
Msomi, J. Z. .
INTERNATIONAL CONFERENCE ON THE APPLICATIONS OF THE MOSSBAUER EFFECT (ICAME 2009), 2010, 217
[3]   Superparamagnetic behavior of MnxNi1-xFe2O4 spinel nanoferrites [J].
Abdallah, Hafiz M. I. ;
Moyo, Thomas .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2014, 361 :170-174
[4]   Structural and magnetic studies of (Mg, Sr)0.2Mn0.1Co0.7Fe2O4 nanoferrites [J].
Abdallah, Hafiz M. I. ;
Moyo, Thomas .
JOURNAL OF ALLOYS AND COMPOUNDS, 2013, 562 :156-163
[5]   Granular Cu-Co alloys as interacting superparamagnets [J].
Allia, P ;
Coisson, M ;
Tiberto, P ;
Vinai, F ;
Knobel, M ;
Novak, MA ;
Nunes, WC .
PHYSICAL REVIEW B, 2001, 64 (14) :1444201-14442012
[6]   Magnetization temperature dependence and freezing of surface spins in magnetic fluids based on ferrite nanoparticles [J].
Aquino, R ;
Depeyrot, J ;
Sousa, MH ;
Tourinho, FA ;
Dubois, E ;
Perzynski, R .
PHYSICAL REVIEW B, 2005, 72 (18)
[7]   Superparamagnetism and magnetic properties of Ni nanoparticles embedded in SiO2 -: art. no. 104406 [J].
Fonseca, FC ;
Goya, GF ;
Jardim, RF ;
Muccillo, R ;
Carreño, NLV ;
Longo, E ;
Leite, ER .
PHYSICAL REVIEW B, 2002, 66 (10) :1044061-1044065
[8]   Co0.7Mg0.3Fe2-xMnxO4-Sr0.5Ba0.5Nb2O6 magnetoelectric composites [J].
Jigajeni, S. R. ;
Kulkarni, S. V. ;
Kolekar, Y. D. ;
Kulkarni, S. B. ;
Joshi, P. B. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 492 (1-2) :402-405
[9]   Magnetic and Structural Properties of Mg(Fe2-xAlx)O4 Thin Films [J].
Kim, Kyoung Sun ;
Han, Seung Ho ;
Kim, Ho Gi ;
Lee, Young Taek ;
Kim, Kyoung A. ;
Kim, Jeong Seog ;
Cheon, Chae Il .
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 2009, 54 (02) :886-890
[10]   Structure and mechanical properties of polycarbonate moidified clay nanocomposites [J].
Guiduri, Babu R. ;
Luyt, Adriaan S. .
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2008, 8 (04) :1880-1885
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