Open AccessEnhancement of Magnetic and Microwave Absorbing Properties of [Ba (Fe, Mn, Ti)12 O19]1-x–[CoFe12 O4] x (x = 0.2; 0.5; 0.8) Composites
Author(s) -
Lucky Darmawan,
Suparno,
Azwar Manaf
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1485/1/012046
Subject(s) - remanence , materials science , magnetization , nanocomposite , composite number , saturation (graph theory) , microwave , analytical chemistry (journal) , doping , nuclear magnetic resonance , composite material , magnetic field , chemistry , physics , mathematics , optoelectronics , chromatography , quantum mechanics , combinatorics
In this paper, we report magnetic and microwave absorbing properties of magnetic based nanocomposite, which synthesized through mechanically alloyed the magnetic crystalline powders. The first component of composite was Mn-Ti doped Barium hexaferrite(BaFe12O19) or BHF obtained through a mechanical alloying process which was mixed with the second component of mechanically alloyed the CoFe2O4magnetic compound to form composites of [Ba (Fe, Mn, Ti) 12 O 19 ] 1-x –[CoFe 2 O 4 ] x (x = 0.2; 0.5; 0.8) compositions. Prior to composite the two magnetic components, the remanence and saturation magnetization of the components were obtained optimally. Before Mn-Ti doping, the BHF has remanence (Mr) and saturation magnetization 0.206 T and 0.42 T respectively, with the corresponding coersivity (Hc) was 263.1 kA/m. On the other hand, CoFe2O4 (CFO) which has a high saturation magnetization(0.48 T) but with a low coersivity(16.22 kA/m). In form of magnetic composite, the high remanence was almost retained, but with the coersivity value decreased further to the lowest 80.82 kA/m. These two main properties (high remanance and low coersivity) were led the composite being good candidates for microwave absorbing materials. Microwave absorbing characteristics of [Ba(Fe, Mn, Ti) 12 O 19 ] 1-x –[CoFe 2 O 4 ] x (x = 0.2; 0.5; 0.8) composites were discussed in this paper relation with their corresponding magnetic properties for designing the best microwave absorbing materials.