Effect of conducting polymer layer on microwave absorption properties of BaFe12O19-TiO2 composite

被引：20

作者：

Akman, O. ^{[1
,2
]}

Durmus, Z. ^{[3
]}

Kavas, H. ^{[4
]}

Aktas, B. ^{[1
]}

Kurtan, U. ^{[3
]}

Baykal, A. ^{[3
]}

Sozeri, H. ^{[5
]}

机构：

[1] Gebze Inst Technol GYTE, Dept Phys, TR-41400 Gebze, Turkey

[2] Sakarya Univ, Dept Phys, TR-54100 Sakarya, Turkey

[3] Fatih Univ, Dept Chem, TR-34500 B Cekmece Istanbul, Turkey

[4] Istanbul Medeniyet Univ, Dept Engn Phys, TR-34720 Istanbul, Turkey

[5] Natl Metrol Inst, TUBITAK UME, TR-41470 Gebze, Turkey

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2013年 / 210卷 / 02期

关键词：

conducting polymers; hexaferrite; microwave absorption; nanocomposites; TiO2; ZR; PERMITTIVITY; ENHANCEMENT; PARTICLES; FE3O4;

D O I：

10.1002/pssa.201228498

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ba-hexaferrite (BaM) particles, synthesized by a sol-gel route, have been mixed with TiO2 powders with different mass ratios. The obtained BaM-TiO2 composites have been coated with a conducting polymer layer of polypyrrole (PPy). Structural, magnetic and microwave absorption properties of the PPy-coated and uncoated BaM-TiO2 composites have been investigated by X-ray diffractometry (XRD), scanning/tunneling electron microscopy, magnetization, and near-field microwave measurements in the frequency range of 8-18 GHz. The dielectric loss of the PPy-coated composites appeared to be higher compared to the uncoated samples in the whole frequency range. A single matching frequency was observed for each of the coated and uncoated samples in the frequency range between 16 and 18 GHz. Despite their relatively low absorption properties of uncoated composites (similar to -30 dB), PPy-coated ones have wide absorption bandwidths at -20 dB. The main absorption mechanism in all samples, coated and uncoated, is dielectric loss. (C) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：395 / 402

页数：8

共 41 条

[1]

Aktas B., J MAGN MAGN IN PRESS

[2]

Baker-Jarvis J., 1993, 1355 NIST

[3] IMPROVED TECHNIQUE FOR DETERMINING COMPLEX PERMITTIVITY WITH THE TRANSMISSION REFLECTION METHOD [J].

BAKERJARVIS, J ;

VANZURA, EJ ;

KISSICK, WA .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1990, 38 (08) :1096-1103

[4] Synthesis and characterization of polypyrrole-BaFe12O19 nanocomposite [J].

Birsoz, B. ;

Baykal, A. ;

Sozeri, H. ;

Toprak, M. S. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 493 (1-2) :481-485

[5] MAGNETOSTATIC PROPAGATION IN A DIELECTRIC LAYERED STRUCTURE [J].

BONGIANNI, WL .

JOURNAL OF APPLIED PHYSICS, 1972, 43 (06) :2541-+

[6] Large-Scale Synthesis and Microwave Absorption Enhancement of Actinomorphic Tubular ZnO/CoFe2O4 Nanocomposites [J].

Cao, Jing ;

Fu, Wuyou ;

Yang, Haibin ;

Yu, Qingjiang ;

Zhang, Yanyan ;

Liu, Shikai ;

Sun, Peng ;

Zhou, Xiaoming ;

Leng, Yan ;

Wang, Shuangming ;

Liu, Bingbing ;

Zou, Guangtian .

JOURNAL OF PHYSICAL CHEMISTRY B, 2009, 113 (14) :4642-4647

[7]

Chandrasekhar P., 1999, Conducting Polymers, Fundamentals and Applications: A Practical Approach

[8] Synthesis and electromagnetic characteristics of BaFe12O19/ZnO composite material [J].

Chen, Wei ;

Zheng, Ji ;

Li, Yan .

JOURNAL OF ALLOYS AND COMPOUNDS, 2012, 513 :420-424

[9] Microwave absorption properties of barium titanate/epoxide resin composites [J].

Chen, Xiaodong ;

Wang, Guiqin ;

Duan, Yuping ;

Liu, Shunhua .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2007, 40 (06) :1827-1830

[10] Surfactant-Assisted Solvothermal Synthesis of Ba(CoTi)xFe12-2xO19 Nanoparticles and Enhancement in Microwave Absorption Properties of Polyaniline [J].

Du, Lei ;

Du, Yunchen ;

Li, You ;

Wang, Jingyu ;

Wang, Chao ;

Wang, Xiaohong ;

Xu, Ping ;

Han, Xijiang .

JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (46) :19600-19606

← 1 2 3 4 5 →