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Preparation and characterization of nanocrystalline misch-metal-substituted yttrium iron garnet powder by the sol-gel combustion process
, Article International Journal of Applied Ceramic Technology ; Volume 5, Issue 5 , 26 August , 2008 , Pages 464-468 ; 1546542X (ISSN) ; Madaah Hosseini, H. R ; Nemati, Z. A ; Sharif University of Technology
2008
Abstract
Nanocrystalline Y3-xMMxFe5O12 powders (MM denotes Misch-metal, x = 0.0, 0.25, 0.5, 0.75, and 1.0) were synthesized by a sol-gel combustion method. Magnetic properties and crystalline structures were investigated using X-ray diffraction (XRD), a vibrating sample magnetometer (VSM), and a scanning electron microscope. The XRD patterns showed that the single-phase garnet of Y3-xMMxFe5O12 was formed at x values ≤ 1.0. The saturation magnetization of powders increased with decreasing MM content and reached the maximum value at Y3 Fe5O12. The crystallite size of powders calcined at 800°C for 3 h was in the range of 38-53 nm. © 2008 American Ceramic Society