%0 Journal Article %1 WOS:000458872600076 %A Paiva, D V M %A Silva, M A S %A de Oliveira, R G M %A Rodrigues, A R %A Fechine, L M U D %A Sombra, A S B %A Fechine, P B A %C PO BOX 564, 1001 LAUSANNE, SWITZERLAND %D 2019 %I ELSEVIER SCIENCE SA %J JOURNAL OF ALLOYS AND COMPOUNDS %K CaTiO3; Ceramic Dielectric Impedance antenna} composite; resonator spectroscopy; {Y3Fe5O12; %P 652-661 %R 10.1016/j.jallcom.2018.12.366 %T Magneto-dielectric composite based on Y3Fe5O12 - CaTiO3 for radio frequency and microwave applications %V 783 %X Yttrium iron garnet and calcium titanate (Y3Fe5O12-CaTiO3, YIG-CTO) ceramic composite were obtained according to the well-established solid-state route. This system was studied by complex impedance spectroscopy as a function of temperature. All samples showed a thermo-activated relaxation with energy activation between 1.10 and 1.70 eV. The CaTi0.6Fe0.4O2.8 phase is formed during sintering process, which influences in the electrical behavior of the samples. Nyquist diagrams were adjusted by two equivalent circuits in series to represent electric response. The YIG-CTO system was also used to design a dielectric resonator antenna (DRA) for microwave applications. The results indicate that DRA YIG-CTObased presented an operation frequency range around 1-7 GHz, and reflection coefficient below -38 dB. From obtained results, the YIG-CTO composite is a great candidate for usage in electronic devices, operating in the C-band, such as WiFi and ISM band applications. (C) 2019 Elsevier B.V. All rights reserved.

@article{WOS:000458872600076, abstract = {Yttrium iron garnet and calcium titanate (Y3Fe5O12-CaTiO3, YIG-CTO) ceramic composite were obtained according to the well-established solid-state route. This system was studied by complex impedance spectroscopy as a function of temperature. All samples showed a thermo-activated relaxation with energy activation between 1.10 and 1.70 eV. The CaTi0.6Fe0.4O2.8 phase is formed during sintering process, which influences in the electrical behavior of the samples. Nyquist diagrams were adjusted by two equivalent circuits in series to represent electric response. The YIG-CTO system was also used to design a dielectric resonator antenna (DRA) for microwave applications. The results indicate that DRA YIG-CTObased presented an operation frequency range around 1-7 GHz, and reflection coefficient below -38 dB. From obtained results, the YIG-CTO composite is a great candidate for usage in electronic devices, operating in the C-band, such as WiFi and ISM band applications. (C) 2019 Elsevier B.V. All rights reserved.}, added-at = {2022-05-23T20:00:14.000+0200}, address = {PO BOX 564, 1001 LAUSANNE, SWITZERLAND}, author = {Paiva, D V M and Silva, M A S and de Oliveira, R G M and Rodrigues, A R and Fechine, L M U D and Sombra, A S B and Fechine, P B A}, biburl = {https://www.bibsonomy.org/bibtex/2ecd8894df5fc9dcb7b2ab190a97b1ae7/ppgfis_ufc_br}, doi = {10.1016/j.jallcom.2018.12.366}, interhash = {280e748f6a8bbd9ca0a20c1f3f1ebdd0}, intrahash = {ecd8894df5fc9dcb7b2ab190a97b1ae7}, issn = {0925-8388}, journal = {JOURNAL OF ALLOYS AND COMPOUNDS}, keywords = {CaTiO3; Ceramic Dielectric Impedance antenna} composite; resonator spectroscopy; {Y3Fe5O12;}, pages = {652-661}, publisher = {ELSEVIER SCIENCE SA}, pubstate = {published}, timestamp = {2022-05-23T20:00:14.000+0200}, title = {Magneto-dielectric composite based on Y3Fe5O12 - CaTiO3 for radio frequency and microwave applications}, tppubtype = {article}, volume = 783, year = 2019 }