Variable-range-hopping conduction and dielectric relaxation in disordered Sr0.97(Ti1-xFex)O3-δ

被引：67

作者：

Ang, C ^{[1
]}

Jurado, JR

Yu, Z

Colomer, MT

Frade, JR

Baptista, JL

机构：

[1] Univ Aveiro, Dept Ceram & Glass Engn, P-3800 Aveiro, Portugal

[2] CSIC, Inst Ceram & Glasses, Madrid 28500, Spain

[3] Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.57.11858

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Conduction and dielectric behavior of Sr-0.97(Ti1-xFex)O3-delta solid solutions were studied. The temperature dependence of the dc conductivity with sigma proportional to A exp(-BT1/4) obtained, indicated a variable-range hopping mechanism. A low-frequency dielectric relaxation was also observed. The activation energy for the variable-range hopping conduction is slightly higher than that for dielectric relaxation, suggesting that the dielectric relaxation is due to the trap-controlled ac conduction. [S0163-1829(98)05819-6].

引用

页码：11858 / 11861

页数：4

共 22 条

[1] Bi:SrTiO3:: A quantum ferroelectric and a relaxor [J].

Ang, C ;

Yu, Z ;

Vilarinho, PM ;

Baptista, JL .

PHYSICAL REVIEW B, 1998, 57 (13) :7403-7406

[2]

ANG C, 1992, J APPL PHYS, V71, P4451, DOI 10.1063/1.350787

[3] DIELECTRIC-PROPERTIES AND DEFECT STRUCTURE IN LANTHANUM DOPED SRTIO3 CERAMICS [J].

ANG, C ;

YU, Z .

JOURNAL OF APPLIED PHYSICS, 1992, 71 (12) :6025-6028

[4]

ANG C, UNPUB

[5] CLUSTER AND DOMAIN-STATE DYNAMICS OF FERROELECTRIC SR1-XCAXTIO3 (X=0.007) [J].

BIANCHI, U ;

DEC, J ;

KLEEMANN, W ;

BEDNORZ, JG .

PHYSICAL REVIEW B, 1995, 51 (14) :8737-8746

[6] POLARONIC RELAXATION IN PEROVSKITES [J].

BIDAULT, O ;

MAGLIONE, M ;

ACTIS, M ;

KCHIKECH, M ;

SALCE, B .

PHYSICAL REVIEW B, 1995, 52 (06) :4191-4197

[7] PREPARATION AND PROPERTIES OF SRTIL-XFEXO3-X/20X/2 SYSTEM [J].

BRIXNER, LH .

MATERIALS RESEARCH BULLETIN, 1968, 3 (04) :299-&

[8] Dispersion and absorption in dielectrics I. Alternating current characteristics [J].

Cole, KS ;

Cole, RH .

JOURNAL OF CHEMICAL PHYSICS, 1941, 9 (04) :341-351

[9] Partial conductivities in SrTiO3: Bulk polarization experiments, oxygen concentration cell measurements, and defect-chemical modeling [J].

Denk, I ;

Munch, W ;

Maier, J .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1995, 78 (12) :3265-3272

[10] 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

← 1 2 3 →