Novel magnetic-dielectric composite ceramic obtained from Y3Fe5O12 and CaTiO3

被引：42

作者：

Paiva, D. V. M. ^{[1
]}

Silva, M. A. S. ^{[2
]}

Ribeiro, T. S. ^{[3
]}

Vasconcelos, I. F. ^{[3
]}

Sombra, A. S. B. ^{[2
]}

Goes, J. C. ^{[2
]}

Fechine, P. B. A. ^{[1
]}

机构：

[1] Univ Fed Ceara, Grp Quim Mat Avancados GQMAT, Dept Quim Analit & Fis Quim, BR-60451970 Fortaleza, Ceara, Brazil

[2] Univ Fed Ceara, Dept Fis, Lab Telecomunicacoes & Ciencia & Engn Mat LOCEM, BR-60451970 Fortaleza, Ceara, Brazil

[3] Univ Fed Ceara, Dept Engn Met & Mat, Lab Magnetismo & Mat Magnet, BR-60451970 Fortaleza, Ceara, Brazil

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 644卷

关键词：

YIG; CTO; Composite; Dielectric magnetic materials; MAGNETOELECTRIC PROPERTIES; MOSSBAUER; YIG; ELECTROLYTES; RESONANCE; BEHAVIOR;

D O I：

10.1016/j.jallcom.2015.05.053

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This work investigates the microstructure and magnetic dielectric properties of the CaTiO3 (CTO) and Y3Fe5O12 (YIG) composite ceramic. CTO is a paramagnetic ceramic, presents a positive value of Resonant Frequency Temperature Coefficients (tau(f)) and has high dielectric permittivity (epsilon(r)) while YIG is ferromagnetic, has low epsilon(r) and negative tau(f) values. Therefore, it is expected that the composite from these individual phase shows new properties, or a mix of them derived from each component. X-ray powder diffraction (XRPD), Scanning Electron Microscope (SEM), Raman and Fe-57 Mossbauer spectroscopy were performed to confirm the phases of the composites. The dielectric and magnetic properties in Radio-Microwave frequencies were studied by impedance spectroscopy using different geometries. It was observed a densification improvement resulting from the insertion of the CTO in composites and a chemical reaction between YIG and CTO phases. This new composite has potential applications in bulk and thick/thin films devices. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：763 / 769

页数：7

共 44 条

[1] Effect of adding aluminum ion on the structural, optical, electrical and magnetic properties of terbium doped yttrium iron garnet nanoparticles films prepared by sol-gel method [J].

Aldbea, Ftema W. ;

Ibrahim, N. B. ;

Yahya, M. .

APPLIED SURFACE SCIENCE, 2014, 321 :150-157

[2] BaTiO3 (BTO)-CaCu3Ti4O12 (CCTO) substrates for microwave devices and antennas [J].

Almeida, A. F. L. ;

Fechine, P. B. A. ;

Kretly, L. C. ;

Sombra, A. S. B. .

JOURNAL OF MATERIALS SCIENCE, 2006, 41 (14) :4623-4631

[3]

Barsoukov E, 2005, IMPEDANCE SPECTROSCOPY: THEORY, EXPERIMENT, AND APPLICATIONS, 2ND EDITION, pXII

[4] Development of a graphical interface for the Rietveld refinement program DBWS [J].

Bleicher, L ;

Sasaki, JM ;

Oliveira, C ;

Santos, P .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2000, 33 :1189-1189

[5] HIGH THERMAL STABILITY OF MICROWAVE DIELECTRIC PROPERTIES OF CaTi1-x(Nb1/2Fe1/2)(x)O-3 CERAMICS [J].

Bruno Costa, A. D. S. ;

Romeu, M. C. ;

Costa, R. C. S. ;

Fernandes, T. S. M. ;

Amarante, F. W. De O. ;

Da Silva, M. A. S. ;

Saraiva, G. D. ;

Sombra, A. S. B. .

JOURNAL OF ADVANCED DIELECTRICS, 2011, 1 (04) :417-427

[6]

Callister W. D., 2013, MAT SCI ENG INTRO, P992

[7] Synthesis, structural refinement and optical behavior of CaTiO3 powders:: A comparative study of processing in different furnaces [J].

Cavalcante, L. S. ;

Marques, V. S. ;

Sczancoski, J. C. ;

Escote, M. T. ;

Joya, M. R. ;

Varela, J. A. ;

Santos, M. R. M. C. ;

Pizani, P. S. ;

Longo, E. .

CHEMICAL ENGINEERING JOURNAL, 2008, 143 (1-3) :299-307

[8] Magneto-dielectric properties of the Y3FE5O12 and GD3FE5O12 dielectric ferrite resonator antennas [J].

Fechine, P. B. A. ;

Moretzsohn, R. S. T. ;

Costa, R. C. S. ;

Derov, J. ;

Stewart, J. W. ;

Drehman, A. J. ;

Junqueira, C. ;

Sombra, A. S. B. .

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, 2008, 50 (11) :2852-2857

[9] Microstrip antenna on a high dielectric constant substrate:: BaTiO3 (BTO)-CaCu3Ti4O12(CCTO) composite screen-printed thick films [J].

Fechine, P. B. A. ;

Tavora, A. ;

Kretly, L. C. ;

Almeida, A. F. L. ;

Santos, M. R. P. ;

Freire, F. N. A. ;

Sombra, A. S. B. .

JOURNAL OF ELECTRONIC MATERIALS, 2006, 35 (10) :1848-1856

[10] Microstructure and magneto-dielectric properties of ferrimagnetic composite GdIGX:YIG1-X at radio and microwave frequencies [J].

Fechine, P. B. A. ;

Pereira, F. M. M. ;

Santos, M. R. P. ;

Filho, F. P. ;

de Menezes, A. S. ;

de Oliveira, R. S. ;

Goes, J. C. ;

Cardoso, L. P. ;

Sombra, A. S. B. .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2009, 70 (05) :804-810

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