@Article{TenórioOlBaGoRaMiBa:2022:ElMiAb,
               author = "Ten{\'o}rio, Plinio Ivo Gama and Oliveira, Ana Paula Silva de and 
                         Batista, Aline Fontana and Gomes, Newton Adriano S. and Raposo, 
                         Maria Irene Bartolomeu and Mineiro, S{\'e}rgio Luiz and Baldan, 
                         Maur{\'{\i}}cio Ribeiro",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Tecnol{\'o}gico de 
                         Aeron{\'a}utica (ITA)} and {Universidade de S{\~a}o Paulo (USP)} 
                         and {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Electromagnetic and microwave absorption properties of carbonyl 
                         iron and CaCu3Ti4O12 composites in the X and Ku bands",
              journal = "Journao of Materials Science-Materials in Electronics",
                 year = "2022",
               volume = "33",
               number = "31",
                pages = "24125--24136",
                month = "Nov.",
             abstract = "Electronic devices and telecommunication systems operating in the 
                         gigahertz range have increased the problems related to 
                         electromagnetic interference. Radar absorber materials (RAM) are 
                         being developed to overcome this situation. Due to its dielectric 
                         properties, one option for this application is high dielectric 
                         constant materials, such as CaCu3Ti4O12 (CCTO). In this work, a 
                         mixture of CCTO and carbonyl iron powder (CI) was prepared and 
                         processed by solid-state reaction, with 200 degrees C and 300 
                         degrees C sets for 2 h. The CCTO + CI mixtures were structural and 
                         morphologically characterized and used as fillers in a polymer 
                         matrix. Three composites were prepared using the mixed additive, 
                         and the samples were heated. Samples, with a thickness of 2 mm, 
                         were designed to study the electromagnetic properties of the 
                         material and absorption potential for microwaves in the frequency 
                         range of the X (8.2 to 12.4 GHz) and Ku (12.4 to 18 GHz) bands. 
                         These bands are used more extensively in defense, antennas, space, 
                         and others. In the X band, only the sample CCTO + CI 300 degrees 
                         C-2 h shows good absorption performance, and the effective 
                         bandwidth (less than - 10 dB) was 1.29 GHz. Finally, in Ku band, 
                         the reflection loss results for the samples CCTO + CI 200 degrees 
                         C-2 h and CCTO + CI 300 degrees C-2 h show a bandwidth 2.9 GHz and 
                         4.9 GHz, respectively, with more than 90% reflection, and the 
                         maximum value for RL was - 15.6 dB at 13.81 GHz and - 25.33 dB at 
                         15.24 GHz, respectively.",
                  doi = "10.1007/s10854-022-09061-4",
                  url = "http://dx.doi.org/10.1007/s10854-022-09061-4",
                 issn = "0957-4522",
             language = "en",
           targetfile = "s10854-022-09061-4.pdf",
        urlaccessdate = "26 abr. 2024"
}