共 11 条
New Avenues to Efficient Chemical Synthesis of Exchange Coupled Hard/Soft Nanocomposite Magnet
被引:6
作者:
Lee, Don Keun
[2
]
Cha, Hyun Gil
[1
]
Kim, Young Hwan
[3
]
Kim, Chang Woo
[1
]
Ji, Eun Sun
[1
]
Kang, Young Soo
[1
]
机构:
[1] Sogang Univ, Dept Chem, Seoul 121742, South Korea
[2] Cheil Ind Inc, Uiwang Si 437711, Gyeonggi Do, South Korea
[3] Pukyong Natl Univ, Dept Chem, Pusan 608737, South Korea
关键词:
Nd-Fe-B Alloy Particles;
Thermal Decomposition;
Exchange Coupled;
Nanocomposite;
PERMANENT-MAGNETS;
NANOPARTICLES;
REDUCTION;
FE;
D O I:
10.1166/jnn.2009.M76
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Nd-Fe-B ultrafine amorphous alloy particles were prepared by reaction of metal ions with borohydride in aqueous solution. Monodispersed Fe nanoparticles were synthesized under an argon atmosphere via thermal decomposition of Fe2+-oleate(2). Exchange coupled Nd2Fe14B/Fe nanocomposite magnets have been prepared by self-assembly using surfactant. The crystal structure of the synthesized nanoparticles was identified by using X-ray powder diffraction (XRD). The size and shape of nanoparticles were obtained by transmission electron microscope (TEM). Thermogravimetry using a microbalance with magnetic field gradient positioned below the sample was used for the measurement of a thermomagnetic analysis (TMA) curve showing the downward magnetic force versus temperature.
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页码:4453 / 4458
页数:6
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