线团状硫化钴纳米链的湿化学法合成及磁性表征

稀有金属材料与工程, 2009, 38(z2): 1003-1006.

线团状硫化钴纳米链的湿化学法合成及磁性表征

张亚辉 ^1, , 郭林 ^2, , 刘康 ^3, , 和琳 ^4, , 陈晋平 ^5,

1.东北大学秦皇岛分校,河北,秦皇岛,066004

2.北京航空航天大学,北京,100083

3.北京大学,北京,100871

4.北京大学,北京,100871

5.北京大学,北京,100871

基金项目: 国家自然科学基金(20 673 009)

关键词：硫化钴 , 磁性能 , 纳米链

Synthesis of Uniform Clew-Like Cobalt Sulfide Nanochains by Mild Solution Chemical Route and Their Magnetic Property

Zhang Yahui ^1, , Guo Lin ^2, , Liu Kang ^3, , He Lin ^4, , Chen Jinping ^5,

1.东北大学秦皇岛分校,河北,秦皇岛,066004

2.北京航空航天大学,北京,100083

3.北京大学,北京,100871

4.北京大学,北京,100871

5.北京大学,北京,100871

Keywords： CoS , magnetic property , nanochain

采用湿化学法在乙二醇体系中,利用以氯化钴为反应物、水合肼为还原剂制备获得的金属钴纳米粒子为前驱物,以低温前驱物硫化法在高分子PVP的修饰下成功的合成出了直径200～250 nm,长度可达10 μm的"线团状"硫化钴自组装纳米链.产物的场冷及零场冷曲线在T<350 K时明显分离,表明样品呈现明显的磁性各向异性,推测由于其准一维形貌结构,使得样品临界势垒温度TB大于350 K.

Highly regular clew-like Co4S3 nanostructure intertwisted from ultra long nanochains which were self assembled by irregular nanoparticles were synthesized by a simple and mild chemical solution route and the magnetic property of the product was investigated. The results show that MZFC(T) and MFC(T) curves separate widely from each other even with the temperature going up to 350 K. It indicates the presence of a magnetic anisotropy potential barrier even at T > 350 K which cause the blocking temperature, TB, to exceed 350 K.

参考文献

[1]	Jiang X;Xie Y;Lu J et al.[J].Advanced Materials,2001,13(16):1278.
[2]	Nath M;Rao C N R .[J].Angewandte Chemie International Edition,2002,41:3451.
[3]	Feldman Y;Wasserman E;Srolovitz DJ;Tenne R .HIGH-RATE, GAS-PHASE GROWTH OF MOS2 NESTED INORGANIC FULLERENES AND NANOTUBES[J].Science,1995(5195):222-225.
[4]	Gong J F;Yang S G;Huang H B et al.[J].Small,2006,2(06):732.
[5]	Wold Aaron;Dwight Kirby .[J].Journal of Solid State Chemistry,1992,96(01):53.
[6]	Morris B;Johnson V;Wold A .[J].Journal of Physics and Chemistry of Solids,1967,28(08):1565.
[7]	Pecoraro T A;Chianelli R R .[J].Journal of Catalysis,1981,67(02):430.
[8]	Pasquariello D M;Kershaw R;Passaretti J D et al.[J].Inorganic Chemistry,1984,23(07):872.
[9]	Passaretti J D;Dwight K;Wold A et al.[J].Inorganic Chemistry,1981,20(08):2631.
[10]	Zhan J H;Xie Y;Yang X G et al.[J].Journal of Solid State Chemistry,1999,146(01):36.
[11]	Qian XF.;Wang C.;Xie Y.;Qian YT.;Zhang XM. .The preparation and phase transformation of nanocrystalline cobalt sulfides via a toluene thermal process[J].Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics,1999(11):2621-2623.
[12]	Ge Jianping;Wang Jin;Zhang Haoxu et al.[J].Chemistry-A European Journal,2004,10(14):3525.
[13]	Chen Xiangying;Zhang Zhongjie;Qiu Zhiguo et al.[J].Journal of Colloid and Interface Science,2007,308(01):271.
[14]	Yin YD;Erdonmez CK;Cabot A;Hughes S;Alivisatos AP .Colloidal synthesis of hollow cobalt sulfide nanocrystals[J].Advanced functional materials,2006(11):1389-1399.
[15]	He L;Zheng W Z;Zhou W et al.[J].J Phys Condes Matter,2007,19(03):036216.
[16]	Wang N;Guo L;He L et al.[J].Small,2007,3(04):606.
[17]	Cowburn RP.;Adeyeye AO.;Welland ME.;Tricker DM.;Koltsov DK. .Single-domain circular nanomagnets[J].Physical review letters,1999(5):1042-1045.
[18]	Punnoose A;Phanthavady T;Seehra M S et al.[J].Physical Review B:Condensed Matter,2004,69(05):054425.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网