Magnetic field sensor based on a maghemite/polyaniline hybrid material

被引：40

作者：

de Souza, Fernando Gomes, Jr. ^{[1
]}

Marins, Jessica Alves ^{[1
]}

Pinto, Jose Carlos ^{[2
]}

de Oliveira, Geiza Esperandio ^{[3
]}

Rodrigues, Cezar Manzini ^{[4
]}

Lima, Luis Mauricio T. R. ^{[5
]}

机构：

[1] Univ Fed Rio de Janeiro, IMA UFRJ, Inst Macromol Prof Eloisa Mano, BR-21945970 Rio De Janeiro, Brazil

[2] Univ Fed Rio de Janeiro, COPPE, Programa Engn Quim, BR-21945970 Rio De Janeiro, Brazil

[3] Univ Fed Espirito Santo, Dept Quim CCE, BR-29075910 Goiabeiras, Vitoria, Brazil

[4] IFES, Unidade Aracruz ES, BR-29199000 Moroba, Aracruz E, Brazil

[5] Univ Fed Rio de Janeiro, Fac Farm, BR-21945970 Rio De Janeiro, Brazil

来源：

JOURNAL OF MATERIALS SCIENCE | 2010年 / 45卷 / 18期

关键词：

OXIDE NANOPARTICLES; POLYANILINE; FERRITE; BLENDS; NANOCOMPOSITES; RESISTIVITY; STATE; SAXS; PH;

D O I：

10.1007/s10853-010-4321-y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A hybrid material containing maghemite and polyaniline (PAni) doped with dodecylbenzenesulfonic acid (DBSA) was prepared through in situ polymerization in aqueous medium. The pure maghemite powder presented average particle diameter of 10 nm and magnetization force of 14 mN. The obtained maghemite/PAni hybrid material also presented nanometric dimensions, associated with reasonable electrical conductivity (260 times larger than the electrical conductivity of the pure maghemite) and about 60% of the original magnetic force. Additionally, the electrical conductivity of the hybrid powder showed significant sensitivity to changes of the magnetic field, indicating that these materials can be useful as magnetic field sensors.

引用

页码：5012 / 5021

页数：10

共 39 条

[1]

Aphesteguy JC, 2007, J MATER SCI, V42, P7062, DOI [10.1007/s10853-006-1423-7, 10.1007/S10853-006-1423-7]

[2]

Bard Y., 1974, Nonlinear parameter estimation

[3] Synthesis and characterization of poly (divinylbenzene)-coated magnetic iron oxide nanoparticles as precursor for the formation of air-stable carbon-coated iron crystalline nanoparticles [J].

Boguslavsky, Yonit ;

Margel, Shlomo .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2008, 317 (01) :101-114

[4] Mixed Co/Fe Oxide Nanoparticles in Block Copolymer Micelles [J].

Bronstein, Lyudmila M. ;

Kostylev, Maxim ;

Shtykova, Eleonora ;

Vlahu, Tedi ;

Huang, Xinlei ;

Stein, Barry D. ;

Bykov, Alexei ;

Remmes, Nicholas B. ;

Baxter, David V. ;

Svergun, Dmitri I. .

LANGMUIR, 2008, 24 (21) :12618-12626

[5] Size-dependent superparamagnetic properties of MgFe2O4 spinel ferrite nanocrystallites [J].

Chen, Q ;

Zhang, ZJ .

APPLIED PHYSICS LETTERS, 1998, 73 (21) :3156-3158

[6] NEW METHOD TO MEASURE MAGNETIC-SUSCEPTIBILITY [J].

DAVIS, RS .

MEASUREMENT SCIENCE AND TECHNOLOGY, 1993, 4 (02) :141-147

[7] Influence of reaction media on pressure sensitivity of polyanilines doped with DBSA [J].

de Souza, Fernando Gomes, Jr. ;

Anzai, Thiaso Koichi ;

Melo, Priamo Albuquerque, Jr. ;

Soares, Bluma G. ;

Nele, Marcio ;

Pinto, Jose Carlos .

JOURNAL OF APPLIED POLYMER SCIENCE, 2008, 107 (04) :2404-2413

[8] Electrical surface resistivity of conductive polymers - A non-Gaussian approach for determination of confidence intervals [J].

de Souza, Fernando Gomes, Jr. ;

Soares, Bluma Guenther ;

Pinto, Jose Carlos .

EUROPEAN POLYMER JOURNAL, 2008, 44 (11) :3908-3914

[9] Magnetic and conducting Fe3O4-cross-linked polyaniline nanoparticles with core-shell structure [J].

Deng, JG ;

Ding, XB ;

Zhang, WC ;

Peng, YX ;

Wang, JH ;

Long, XP ;

Li, P ;

Chan, ASC .

POLYMER, 2002, 43 (08) :2179-2184

[10] POLYANILINE FIBERS AND FILMS - STRETCH-INDUCED ORIENTATION AND CRYSTALLIZATION, MORPHOLOGY, AND THE NATURE OF THE AMORPHOUS PHASE [J].

FISCHER, JE ;

TANG, X ;

SCHERR, EM ;

CAJIPE, VB ;

MACDIARMID, AG .

SYNTHETIC METALS, 1991, 41 (1-2) :661-664

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