Influnce of Stoichiometry and Molar Ratio of Barium Ferrite Thin Film Synthesized by Sol-gel on Alumina Substrate
来源期刊：材料热处理学报2004年第5期
论文作者：Ali Ghasemi A.Hosseinpour A.Saatchi M.Salehi M.R. Shams
关键词：sol-gel; barium ferrite; molar ratio; thin film;
摘 要：Amorphous gels were processed with a varying Fe/Ba ratio of 11/5, 28/2, 10.5/1 in water and Solvent. Iron and barium nitrites with specific molar ratio was solved in water and slovent at 60℃ for 3 hours untill a dark brown solution was prepared. The sols were introduced to substrate dropwise and spinning with 2000 rpm in 3 min was applied; the work was repeated for 10 times and the samples were dried and sintered. The TGA analysis was used to identify the heating rate of the samples; at temperature of 1150℃ for one hour the final phase was attained. the thickness, uniformity, morphology and the composition were examined by SEM and XRD. The study shows that the fabrication barium ferrite film of the molar ratio of Fe/Ba = 10.5/1 is much more suitable than other ratios.
Ali Ghasemi1，A.Hosseinpour2，A.Saatchi3，M.Salehi3，M.R. Shams3
(1.Materials Engineering Department, Isfahan university of Technology, Isfahan , Iran ;
2.Electroceramic Research center, Shahin shahr , Iran;
3.Materials Engineering Department, Isfahan university of Technology, Isfahan , Iran)
摘要:Amorphous gels were processed with a varying Fe/Ba ratio of 11/5, 28/2, 10.5/1 in water and Solvent. Iron and barium nitrites with specific molar ratio was solved in water and slovent at 60℃ for 3 hours untill a dark brown solution was prepared. The sols were introduced to substrate dropwise and spinning with 2000 rpm in 3 min was applied; the work was repeated for 10 times and the samples were dried and sintered. The TGA analysis was used to identify the heating rate of the samples; at temperature of 1150℃ for one hour the final phase was attained. the thickness, uniformity, morphology and the composition were examined by SEM and XRD. The study shows that the fabrication barium ferrite film of the molar ratio of Fe/Ba = 10.5/1 is much more suitable than other ratios.
关键词:sol-gel; barium ferrite; molar ratio; thin film;
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