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Magnetochromic Effect of Superparamagnetic Fe3O4
LI Ziheng 1 * #,ZHAO Jun 2,LI Gen 2,QI Ping 2,WANG Wenquan 2
1.College of Physics, Jilin University, ChangChun 130012
2.College of Physics, Jilin University, Changchun 130012, People’s Republic of China
*Correspondence author
#Submitted by
Subject:
Funding: National Found for Fostering Talents of Basic Science (No.No. J1103202), National Natural Science Foundation of China(No.No. 20803031), The Specialized Research Fund for Basic Research and Operating Expenses of Jilin University (No.200903327)
Opened online:16 December 2011
Accepted by: none
Citation: LI Ziheng,ZHAO Jun,LI Gen.Magnetochromic Effect of Superparamagnetic Fe3O4[OL]. [16 December 2011] http://en.paper.edu.cn/en_releasepaper/content/4449911
 
 
Superparamagnetic Fe3O4 are synthesized by high-temperature hydrothermal synthesis method and the magnetochromic effect is studied. Results show that the magnetochromic is controlled by external magnetic field and Coulomb force of Fe3O4 colloidal nanocrystal clusters (CNCs). The pH value can lead to the changing of charges and the Coulomb force of CNCs. Therefore the interparticle spacing of CNCs is changed. When under external magnetic field, an ordered nanostructure is formed. The magnetochromic is a combined effect of external magnetic field and pH value of solution. Using the magnetochromic method to study the interaction of nanoparticles is important for guiding the preparation of ordered nano-assemlbly.
Keywords:Physical chemical; Ordered nanostructure; Magnetochromic effect; Light diffraction; Superparamagnetic
 
 
 

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