Size-controlled electrical properties of sol-gel-grown nanostructured Gd0.95Ca0.05MnO3

被引：37

作者：

Thakrar, Kinnari ^{[1
]}

Dhruv, Davit ^{[1
,2
]}

Rathod, K. N. ^{[1
]}

Joshi, Zalak ^{[1
]}

Gadani, Keval ^{[1
]}

Pandya, D. D. ^{[1
]}

Markna, J. H. ^{[2
]}

Kataria, B. R. ^{[1
]}

Solanki, P. S. ^{[1
]}

Kuberkar, D. G. ^{[1
]}

Shah, N. A. ^{[1
]}

机构：

[1] Saurashtra Univ, Dept Phys, Rajkot 360005, Gujarat, India

[2] Gujarat Technol Univ, VVP Engn Coll, Rajkot 360005, Gujarat, India

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2016年 / 79卷 / 01期

关键词：

Sol-gel; Nanostructure; Manganites; Electrical properties; IMPEDANCE SPECTROSCOPY; DIELECTRIC BEHAVIOR; MAGNETIC-PROPERTIES; AC CONDUCTIVITY; TRANSPORT; MAGNETOTRANSPORT; CHALCOGENIDE;

D O I：

10.1007/s10971-016-4031-2

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this communication, we report the results of the studies on electrical properties of cost-effective modified sol-gel-grown nanostructured Gd0.95Ca0.05MnO3 (GCMO) manganites sintered at different temperatures. Structural investigations, carried out using X-ray diffraction measurements, reveal the single-phasic nature of GCMO samples having orthorhombic unit cell structure. Frequency-dependent variation in AC conductivity (sigma(AC)) has been discussed on the basis of correlated barrier hopping (CBH) mechanism for the GCMO samples sintered at lower temperatures. Sintering temperature-induced transition from CBH mechanism to Maxwell-Wagner relaxation processes has been discussed in detail. Size-induced modifications in the impedance response of the samples have been understood, in detail, using size effects and Cole-Cole plots.

引用

页码：144 / 150

页数：7

共 37 条

[1] A strategy for analysis and modelling of impedance spectroscopy data of electroceramics: Doped lanthanum gallate [J].

Abram, EJ ;

Sinclair, DC ;

West, AR .

JOURNAL OF ELECTROCERAMICS, 2003, 10 (03) :165-177

[2] Ferroelectricity in antiferromagnetic phases of Eu1-xYxMnO3 [J].

Agostinho Moreira, J. ;

Almeida, A. ;

Ferreira, W. S. ;

Chaves, M. R. ;

Oliveira, J. B. ;

Machado da Silva, J. M. ;

Sa, M. A. ;

Vilela, S. M. F. ;

Tavares, P. B. .

SOLID STATE COMMUNICATIONS, 2011, 151 (05) :368-371

[3]

AlievAli E, 2008, SUPERCOND SCI TECH, V21

[4] Magnetic-field-induced transition in the lattice modulation of colossal magnetoelectric GdMnO3 and TbMnO3 compounds -: art. no. 100102 [J].

Arima, T ;

Goto, T ;

Yamasaki, Y ;

Miyasaka, S ;

Ishii, K ;

Tsubota, M ;

Inami, T ;

Murakami, Y ;

Tokura, Y .

PHYSICAL REVIEW B, 2005, 72 (10)

[5] Hysteresis effects in the phase diagram of multiferroic GdMnO3 -: art. no. 100402 [J].

Baier, J ;

Meier, D ;

Berggold, K ;

Hemberger, J ;

Balbashov, A ;

Mydosh, JA ;

Lorenz, T .

PHYSICAL REVIEW B, 2006, 73 (10)

[6] Structural, transport, and magnetic properties of RMnO3 perovskites (R = La, Pr, Nd, Sm, 153Eu, Dy) [J].

Dabrowski, B ;

Kolesnik, S ;

Baszczuk, A ;

Chmaissem, O ;

Maxwell, T ;

Mais, J .

JOURNAL OF SOLID STATE CHEMISTRY, 2005, 178 (03) :629-637

[7] THEORY OF AC CONDUCTION IN CHALCOGENIDE GLASSES [J].

ELLIOTT, SR .

PHILOSOPHICAL MAGAZINE, 1977, 36 (06) :1291-1304

[8] TEMPERATURE-DEPENDENCE OF AC CONDUCTIVITY OF CHALCOGENIDE GLASSES [J].

ELLIOTT, SR .

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1978, 37 (05) :553-560

[9] AC CONDUCTION IN AMORPHOUS-CHALCOGENIDE AND PNICTIDE SEMICONDUCTORS [J].

ELLIOTT, SR .

ADVANCES IN PHYSICS, 1987, 36 (02) :135-218

[10] Spin-phonon coupling and magnetoelectric properties: EuMnO3 versus GdMnO3 [J].

Ferreira, W. S. ;

Moreira, J. Agostinho ;

Almeida, A. ;

Chaves, M. R. ;

Araujo, J. P. ;

Oliveira, J. B. ;

Da Silva, J. M. Machado ;

Sa, M. A. ;

Mendonca, T. M. ;

Carvalho, P. Simeao ;

Kreisel, J. ;

Ribeiro, J. L. ;

Vieira, L. G. ;

Tavares, P. B. ;

Mendonca, S. .

PHYSICAL REVIEW B, 2009, 79 (05)

← 1 2 3 4 →