Tailored magnetic properties of Sm(Zn) substituted nanocrystalline barium hexaferrites

被引:48
作者
Han Yanbing [1 ,2 ]
Sha Jian [1 ]
Sun Lina [2 ]
Tang Quan [2 ]
Lu Qin [2 ]
Jin Hongxiao [2 ]
Jin Dingfeng [2 ]
Bo Hong [2 ]
Ge Hongliang [2 ]
Wang Xinqing [2 ]
机构
[1] Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China
[2] China Jiliang Univ, Zhejiang Prov Key Lab Magnetism, Coll Mat Sci & Engn, Hangzhou 310018, Zhejiang, Peoples R China
基金
中国国家自然科学基金;
关键词
Barium hexaferrite; Sol-gel synthesis; Magnetic properties; RATIO; LA; PH;
D O I
10.1016/j.jallcom.2009.06.143
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Sm and SmZn substituted nanocrystalline barium hexaferrites (Ba1-xSmxFe12O19 and Ba1-xSmxFe12-xZnxO19, x = 0-0.6) were prepared by the sol-gel autocombustion process. X-ray diffraction (XRD) and vibrating sample magnetometer (VSM) were used to characterize the phase composition, crystal structure and magnetic properties of the as-prepared barium hexaferrites. All results indicated that the substitution content (x) critically influenced on the phase composition and magnetic properties. When the substitution content x > 0.2, impurity phases such as alpha-Fe2O3, SmFeO3 and ZnFe2O4 were detected, which diluted and weakened saturation magnetization (M-s). For the Sm-doped samples, owing to the hyperfine field, canting spin, magnetic dilution and impurity phases, M-s increased with x firstly, and then decreased when x > 0.03. On the other hand, the coercivity (Hc) continuously increased with x. Nevertheless, for the SmZn-doped samples, M-s reached maximum when x = 0.06 and Hc almost unchanged with x. Compared the magnetic properties of Sm- and SmZn-doped samples, it was proved that Zn2+ substituted Fe3+ at 4f(2) sites and Sm3+ substituted Ba2+, which changed Fe3+ to Fe2+ at 2a sites in order to satisfy the electroneutrality principle. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:348 / 351
页数:4
相关论文
共 12 条
[1]   Magnetic properties of Ba-M-type hexagonal ferrites prepared by the sol-gel method with and without polyethylene glycol added [J].
Han, Mangui ;
Ou, Yu ;
Chen, Wenbing ;
Deng, Longjiang .
JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 474 (1-2) :185-189
[2]   Crystallographic and magnetic properties of SrM thin films on Pt underlayer prepared at various substrate temperatures [J].
Kaewrawang, Arkom ;
Ghasemi, Ali ;
Liu, Xiaoxi ;
Morisako, Akimitsu .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2009, 321 (13) :1939-1942
[3]   Site preference and magnetic properties for a perpendicular recording material:: BaFe12-xZnx/2Zrx/2O19 nanoparticles [J].
Li, ZW ;
Ong, CK ;
Yang, Z ;
Wei, FL ;
Zhou, XZ ;
Zhao, JH ;
Morrish, AH .
PHYSICAL REVIEW B, 2000, 62 (10) :6530-6537
[4]   Synthesis and magnetic properties of quasi-single domain M-type barium hexaferrite powders via sol-gel auto-combustion: Effects of pH and the ratio of citric acid to metal ions (CA/M) [J].
Liu Junliang ;
Zhang Wei ;
Guo Cuijing ;
Zeng Yanwei .
JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 479 (1-2) :863-869
[5]   Influence of Fe/Ba molar ratio on the characteristics of Ba-hexaferrite particles prepared by sol-gel combustion method [J].
Mali, A ;
Ataie, A .
JOURNAL OF ALLOYS AND COMPOUNDS, 2005, 399 (1-2) :245-250
[6]   Preparation and magnetic properties of barium hexaferrite, nanorods [J].
Mu, Guohong ;
Pan, Xifeng ;
Chen, Na ;
Gan, Keke ;
Gu, Mingyuan .
MATERIALS RESEARCH BULLETIN, 2008, 43 (06) :1369-1375
[7]   Investigation of temperature dependence of surface anisotropy field and constant in the system of BaFe12O19 nanocrystals [J].
Ol'khovik, L. P. ;
Sizova, Z. I. .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2008, 320 (17) :2190-2194
[9]   Preparation and studies of Co(II) and Co(III)-substituted barium ferrite prepared by sol-gel method [J].
Teh, Geok Bee ;
Nagalingam, Saravanan ;
Jefferson, David A. .
MATERIALS CHEMISTRY AND PHYSICS, 2007, 101 (01) :158-162
[10]   The effect of pH values on the phase formation and properties of BaFe12O19 prepared by citrate-EDTA complexing method [J].
Wang, Lixi ;
Zhang, Qitu .
JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 454 (1-2) :410-414