Small polaron and bipolaron transport in antimony oxide doped barium hexaferrites

被引：38

作者：

Brahma, P ^{[1
]}

Banerjee, S

Chakraborty, S

Chakravorty, D

机构：

[1] Gurudas Coll, Calcutta 700054, W Bengal, India

[2] Univ Calcutta, Dept Phys, Calcutta 700009, W Bengal, India

[3] Indian Assoc Cultivat Sci, Calcutta 700032, W Bengal, India

来源：

JOURNAL OF APPLIED PHYSICS | 2000年 / 88卷 / 11期

关键词：

D O I：

10.1063/1.1309045

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Direct current electrical resistivity measurements on specimens with composition BaO (6-x) Fe2O3, x Sb2O3 With x having values of 0.0, 0.025, 0.05, 0.1, and 0.3, respectively, were carried out in the temperature range of 120-300 K. Chemical analyses showed the presence of Sb3+ and Sb5+ ions as well as Fe2+ and Fe3+ ions in the doped specimens. The doped specimens were found to have reduced resistivities. The analysis of the data shows that the electrical conductivity in this system arises due to a combined contribution of both small polaron hopping between Fe2+ and Fe3+ sites and bipolaronic transport between Sb3+ and Sb5+ sites. (C) 2000 American Institute of Physics. [S0021-8979(00)08320-1].

引用

收藏

页码：6526 / 6528

页数：3

相关论文

共 14 条

[1] POLARONS IN CRYSTALLINE AND NON-CRYSTALLINE MATERIALS [J].

AUSTIN, IG ;

MOTT, NF .

ADVANCES IN PHYSICS, 1969, 18 (71) :41-+

[2] MAGNETIC-PROPERTIES OF SB2O3-DOPED BA-M HEXAGONAL FERRITES [J].

BRAHMA, P ;

GIRI, AK ;

CHAKRAVORTY, D ;

TIWARI, M ;

BAHADUR, D .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1991, 102 (1-2) :109-115

[3] DETERMINATION OF SEVERAL VALENCES OF IRON, ARSENIC AND ANTIMONY, AND SELENIUM IN GLASS [J].

CLOSE, P ;

SHEPHERD, HM ;

DRUMMOND, CH .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1958, 41 (11) :455-460

[4] AC CONDUCTION IN SOL-GEL-DERIVED GLASSES IN THE SIO2-AS2O3 SYSTEM [J].

DATTA, A ;

GIRI, AK ;

CHAKRAVORTY, D .

PHYSICAL REVIEW B, 1992, 45 (21) :12222-12226

[5] AC ELECTRICAL-PROPERTIES OF SOL GEL-DERIVED GLASSES IN THE SB2O3-SIO2 SYSTEM [J].

DATTA, A ;

GIRI, AK ;

CHAKRAVORTY, D .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1992, 4 (07) :1783-1790

[6] SWITCHING OF TIO2-V2O5-P2O5 GLASSES [J].

HIRASHIMA, H ;

WATANABE, Y ;

YOSHIDA, T .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1987, 95-6 :825-832

[7] DIELECTRIC RELAXATIONS AND ELECTRICAL TRANSPORT DUE TO NONADIABATIC SMALL POLARONS IN P-TYPE NIO DOPED WITH LI [J].

IGUCHI, E ;

AKASHI, K .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1992, 61 (09) :3385-3393

[8] ESTIMATES OF ANDERSON ELECTRON-PHONON-COUPLING CONSTANTS FOR NONADIABATIC SMALL POLARONS IN N-TYPE BATIO3 USING A POLARIZABLE POINT-ION SHELL-MODEL [J].

IGUCHI, E ;

TAMENORI, A ;

KUBOTA, N .

PHYSICAL REVIEW B, 1992, 45 (02) :697-706

[9] POLARONIC CONDUCTION IN N-TYPE BATIO3 DOPED WITH LA2O3 OR GD2O3 [J].

IGUCHI, E ;

KUBOTA, N ;

NAKAMORI, T ;

YAMAMOTO, N ;

LEE, KJ .

PHYSICAL REVIEW B, 1991, 43 (10) :8646-8649

[10] FREQUENCY-DEPENDENT LOSS IN AMORPHOUS-SEMICONDUCTORS [J].

LONG, AR .

ADVANCES IN PHYSICS, 1982, 31 (05) :553-637