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

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Sin W., Wong K., Li P.

Acta Physica Polonica A

2007

vol. 111

issue 1

165-171

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.

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1 Acta Physica Polonica A

1 2007

1 Li P.

1 Sin W.

1 Wong K.

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