Surfactant Effect on Synthesis of Nanocrystalline LaxSr1-xMnO3 by Hydrothermal Method |
| W.L. Sina, K.H. Wong a and . Li b
aDepartment of Applied Physics, The Hong Kong Polytechnic University, Kowloon, Hong Kong bDepartment of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Kowloon, Hong Kong |
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| Received: 04 09 2006; |
| Crystalline LaxSr1-xMnO3 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 LaxSr1-xMnO3 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 LaxSr1-xMnO3. The surfactant also provides us an additional means of controlling the nanocrystalline size and maintaining the stoichiometry of the as-prepared nanocrystallites. |
| DOI: 10.12693/APhysPolA.111.165 PACS numbers: 75.47.Lx, 82.70.Uv, 61.10.Nz |