EFFECT OF SUBSTITUTION OF Al3+ into La0.67Sr0.33MnO3 SYSTEM USING SOL-GEL METHOD
M.S.Zulfakar1, H. Abdullah1*, S.Shaari2 and Z.Zalita3
1Department of Electrical, Electronics and Systems Engineering,
Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia,
43600 Bangi, Selangor, Malaysia
2Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia, 43600 Bangi Selangor, Malaysia
3School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia.
Corresponding author: email@example.com*
Thin film samples of La0.67Sr0.33Mn1-xAlxO3 were synthesized using sol-gel method with x = 0.00, 0.15 and 0.30. Nitric acid, triethanolamine (TEA) and distilled water were used as solvent and stabilizer agent. All the samples were calcined at 650°C and 750°C for half an hour. The structural morphology was investigated via x-ray diffraction (XRD) and scanning electron microscope (SEM). X-ray diffraction patterns show rhombohedral distorted perovskite structures. The scanning electron microscope showed the average grain size was decreased as the level of doping concentration increased and structural orientation is more ordered. Magnetic properties were investigated using vibration sample Magnetometer (VSM) at room temperature. Analysing all the samples show when magnetic field is getting higher, magnetization of the samples decreased.
Keywords: Sol-gel method; rhombodehral; perovskite structures; magnetization;
. T. Horita, K. Yamaji, H. Negishi, N. Sakai, H. Yokokawa and T. Kato, Solid State Ionics 897 (2000) 136-137
. J. Gao, F.X. Hu and H. Yao, Appl. Surf. Sci, 253 (2006) 5521
. Y.D. Zhen, S.P. Jiang, S. Zhang, V. Tan and J. Eur, Ceram. Soc 26 (2006) 3253
. H.H. Nguyen, S. Joe, A. Hassini, J. Noudem, M. Gervais and G. François, Journal for Materials Science and Engineering B 104 (2003) 137–140
. Chun–Hua Yan, Yun–Hui Huang, Zhe-Ming Wang, Tao Zhu, Chun-Sheng Liao, fu-Xiang cheng, Zhi-Li Zhang and Guang-Xian Xu, Thin Solid Films 366 (2000) 302-305.
. Jia-feng Feng, Kun Zhao, Yan-hong Huang, Song-qing Zhao,Hui-bin Lu, Jian-gao Zhao, Xiu-feng Han, Wen-shan Zhan, Hongkuen, Wong, Physica B: 369 (2005) 261–265.
. P. Li, L. T. Zhang, W. B. Mi, E. Y. Jiang, and H.L. Bai. J. Appl. Phys. 106 (2009) 033908.