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Microemulsion Synthesis of Nd0.5Ca0.5MnO3 and Nd0.5Sr0.5MnO3 Nanoparticles

Published online by Cambridge University Press:  01 February 2011

Z. Q. Wang ,
K. B. Yin ,
F. Gao ,
K. F. Wang ,
Z. F. Ren  and
J. -M. Liu
Z. Q. Wang
Affiliation:
[email protected], Nanjing University, Department of Physics, Nanjing University, Hankou Road No.22, Nanjing, 210093, China, People's Republic of
K. B. Yin
Affiliation:
[email protected], Nanjing University, Department of Physics, Nanjing, 210093, China, People's Republic of
F. Gao
Affiliation:
[email protected], Nanjing University, Department of Physics, Nanjing, 210093, China, People's Republic of
K. F. Wang
Affiliation:
[email protected], Nanjing University, Department of Physics, Nanjing, 210093, China, People's Republic of
Z. F. Ren
Affiliation:
[email protected], Boston College, Department of Physics, Boston, MA, 02467, United States
J. -M. Liu
Affiliation:
[email protected], Nanjing University, Department of Physics, Nanjing, 210093, China, People's Republic of
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Abstract

Nd0.5Ca0.5MnO3 (NCMO) and Nd0.5Sr0.5MnO3 (NSMO) nanoparticles have been synthesized using microemulsion synthesis method, with hexamethylene alkyl, a mixture of OP and 1-hexanol, NaOH as oil phase, surfactant, and precipitating agent, respectively. The phase formation of NCMO and NSMO nanoparticles was examined. The final NCMO and NSMO nanoparticles have average particle size of 24 and 50 nm, respectively, and present high-quality crystallinity. Measurements of the magnetic properties suggest that the charge-order state favored for bulk NCMO phase collapses in NCMO nanoparticles. The spin freezing behavior for both NCMO and NSMO nanoparticles was identified.

Keywords

magnetic propertiesnanostructurechemical synthesis
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 962: Symposium P – Nanoscale Magnets – Synthesis, Self-Assembly, Properties and Applications , 2006 , 0962-P10-17
Copyright
Copyright © Materials Research Society 2007

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