Alamolhoda, S. and Ebrahimi, S. A. S. and Badiei, A. (2008) An investigation on the formation of strontium hexaferrite nano-powder by a sol-gel auto-combustion method in the presence of surfactant using different basic agents. INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 22 (18-19). pp. 3159-3164. ISSN 0217-9792
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Official URL: http://www.worldscinet.com/ijmpb/22/2218n19/S02179...
Strontium hexaferrite is a hard magnetic material and has been extensively used as a permanent magnet. In this work a novel sol-gel auto-combustion method was used to synthesize ultra fine strontium hexaferrite. The investigations show that the model of combustion changes with the change of basic agent. The XRD results show that using ammonia or trimethylamine does not change the composition of the combustion product and it also shows that the surfactant burns completely during the combustion process. The average crystallite size of hexaferrite powders was also measured by X-ray line broadening technique employing Scherrer formula. The results show that changing the basic agent makes the particle size of the final product much smaller. Basic agent also affects the formation temperature of the single phase strontium hexaferrite.
|Subjects:||Physical Science > Nanophysics|
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
|Divisions:||Faculty of Engineering, Science and Mathematics > School of Physics|
Faculty of Engineering, Science and Mathematics > School of Chemistry
|Deposited On:||04 Nov 2009 07:48|
|Last Modified:||04 Nov 2009 07:48|
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