Surfactant Effect on Synthesis of Nanocrystalline La_xSr_{1-x}MnO_3 by Hydrothermal Method

• Authors: W. Sin , K. Wong , P. Li
• Languages of publication: EN

Abstracts

EN

Crystalline La_xSr_{1-x}MnO_3 was prepared by a hydrothermal route in the presence of surfactant. The cationic surfactant of cetyltrimethylammonium bromide as a template is used to regulate the nucleation and crystal growth. The as-synthesized product was characterized by X-ray diffraction and transmission electron microscopy. Nanosized and uniform rod-like monocrystals of La_xSr_{1-x}MnO_3 were obtained. Their magnetic properties were studied using a vibrating sample magnetometer. Our results reveal that the use of surfactant helps to lower the processing temperature and to speed up the formation and crystallization of La_xSr_{1-x}MnO_3. The surfactant also provides us an additional means of controlling the nanocrystalline size and maintaining the stoichiometry of the as-prepared nanocrystallites.

Keywords

EN

75.47.Lx; 82.70.Uv; 61.10.Nz

Discipline

• 82.70.Uv: Surfactants, micellar solutions, vesicles, lamellae, amphiphilic systems, (hydrophilic and hydrophobic interactions)(see also 82.30.Rs Hydrogen bonding, hydrophilic effects in specific chemical reactions)
• 75.47.Lx: Magnetic oxides

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2007
• Volume: 111
• Issue: 1
• Pages: 165-171

Dates

published

2007-01

received

2006-09-04

Contributors

author

W. Sin

• Department of Applied Physics, the Hong Kong Polytechnic University, Kowloon, Hong Kong, People's Republic of China

author

K. Wong

• Department of Applied Physics, the Hong Kong Polytechnic University, Kowloon, Hong Kong, People's Republic of China

author

P. Li

• Department of Applied Physics, the Hong Kong Polytechnic University, Kowloon, Hong Kong, People's Republic of China

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Identifiers

DOI

10.12693/APhysPolA.111.165