Monodispersed nanocrystalline Co1-xZnxFe2O4 particles by forced hydrolysis:: Synthesis and characterization

被引:93
作者
Duong, G. V.
Hanh, N.
Linh, D. V.
Groessinger, R.
Weinberger, P.
Schafler, E.
Zehetbauer, M.
机构
[1] Hanoi Univ Technol, Fac Chem Engn, Hanoi, Vietnam
[2] Vienna Univ Technol, Inst Solid State Phys, A-1040 Vienna, Austria
[3] Vienna Univ Technol, Inst Appl Synthet Chem, A-1060 Vienna, Austria
[4] Univ Vienna, Fac Phys, Dept Mat Phys, A-1090 Vienna, Austria
基金
奥地利科学基金会;
关键词
nanocrystalline; ferrite; superparamagnetism; forced hydrolysis method; zinc substitution; hysteresis loop;
D O I
10.1016/j.jmmm.2006.11.167
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Zinc-substituted cobalt ferrites, Co1-xZnxFe2O4, were for the first time successfully prepared by forced hydrolysis method. The obtained materials are single phase, monodispersed nanocrystalline with an average grain size of about 3 nm. These materials are superparamagnetic at room temperature and ferrimagnetic at temperature lower than the blocking temperature. When the zinc substitution increases from x = 0 to 0.4, at 4.2 K, the saturation magnetization increases from 72.1 to 99.7 emu/g. The high saturation magnetization of these samples suggests that this method is suitable for preparing high-quality nanocrystalline magnetic ferrites for practical applications. (C) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:46 / 50
页数:5
相关论文
共 21 条
[1]   Magnetic properties of ultrafine cobalt ferrite particles synthesized by hydrolysis in a polyol medium [J].
Ammar, S ;
Helfen, A ;
Jouini, N ;
Fiévet, F ;
Rosenman, I ;
Villain, F ;
Molinié, P ;
Danot, M .
JOURNAL OF MATERIALS CHEMISTRY, 2001, 11 (01) :186-192
[2]   Thermomagnetic properties of Co1-xZnxFe2O4 (x=0.1-0.5) nanoparticles [J].
Arulmurugan, R ;
Vaidyanathan, G ;
Sendhilnathan, S ;
Jeyadevan, B .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2006, 303 (01) :131-137
[3]   Chemical synthesis and magnetic study of nanocrystalline thin films of cobalt spinel ferrites [J].
Cheng, FX ;
Peng, ZY ;
Liao, CS ;
Xu, ZG ;
Gao, S ;
Yan, CH ;
Wang, DJ ;
Wang, J .
SOLID STATE COMMUNICATIONS, 1998, 107 (09) :471-476
[4]  
Chikazumi S., 1997, PHYS FERROMAGNETISM, P202
[5]   Magnetic properties of nanocrystalline CoFe2O4 dispersed in amorphous silica [J].
Congiu, F ;
Concas, G ;
Ennas, G ;
Falqui, A ;
Fiorani, D ;
Marongiu, G ;
Marras, S ;
Spano, G ;
Testa, AM .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2004, 272 :1561-1562
[6]   Magnetic properties and Mossbauer spectra of nanosized CoFe2O4 powders [J].
Grigorova, M ;
Blythe, HJ ;
Blaskov, V ;
Rusanov, V ;
Petkov, V ;
Masheva, V ;
Nihtianova, D ;
Martinez, LM ;
Munoz, JS ;
Mikhov, M .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1998, 183 (1-2) :163-172
[7]   Microstructure of severely deformed metals determined by X-ray peak profile analysis [J].
Gubicza, J ;
Nam, NH ;
Balogh, L ;
Hellmig, RJ ;
Stolyarov, VV ;
Estrin, Y ;
Ungár, T .
JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 378 (1-2) :248-252
[8]   Particle size distribution and dislocation density determined by high resolution X-ray diffraction in nanocrystalline silicon nitride powders [J].
Gubicza, J ;
Szépvölgyi, J ;
Mohai, I ;
Zsoldos, L ;
Ungár, T .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 280 (02) :263-269
[9]   The effect of heat-treatment on the grain-size of nanodisperse plasmathermal silicon nitride powder [J].
Gubicza, J ;
Szépvölgyi, J ;
Mohai, I ;
Ribárik, G ;
Ungár, T .
JOURNAL OF MATERIALS SCIENCE, 2000, 35 (15) :3711-3717
[10]  
Hafeli U., 1997, Scientific and Clinical Applications of Magnetic Carriers, DOI DOI 10.1007/s10439-009-9660-y