Electrical properties of Mg-doped LiTaO3 ceramics

A. Huanosta; E. Alvarez; M. E. Villafuerte-Castrejón; A. R. West

doi:10.1016/j.materresbull.2004.08.008

Electrical properties of Mg-doped LiTaO₃ ceramics

A. Huanosta^*, E. Alvarez, M. E. Villafuerte-Castrejón, A. R. West

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

The ac impedance of ceramic samples of Mg-doped LiTaO₃ has been measured over the temperature range 600-800 °C. It can be modelled by an equivalent circuit composed of a "dielectric element" R ₁C₁C₂ in parallel with a "leakage resistance" R₂. The series component R₁C₁, represents the polarisation associated with domain reorientation: C₁ passes through a maximum at T_c at the same time as R₁ passes through an approximate minimum. C₂ represents the bulk polarisation, R₂ shows linear Arrhenius behaviour. The solid solution were characterised by XRD and the formation mechanism was proposed. The variation of electrical properties with composition is discussed.

Original language	English
Pages (from-to)	2229-2240
Number of pages	12
Journal	Materials Research Bulletin
Volume	39
Issue number	14-15
DOIs	https://doi.org/10.1016/j.materresbull.2004.08.008
State	Published - 2 Dec 2004
Externally published	Yes

Keywords

A. Ceramics
A. Oxides
B. Chemical synthesis
C. X-ray diffraction
D. Crystal structure
D. Dielectric properties

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10.1016/j.materresbull.2004.08.008

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title = "Electrical properties of Mg-doped LiTaO3 ceramics",

abstract = "The ac impedance of ceramic samples of Mg-doped LiTaO3 has been measured over the temperature range 600-800 °C. It can be modelled by an equivalent circuit composed of a {"}dielectric element{"} R 1C1C2 in parallel with a {"}leakage resistance{"} R2. The series component R1C1, represents the polarisation associated with domain reorientation: C1 passes through a maximum at Tc at the same time as R1 passes through an approximate minimum. C2 represents the bulk polarisation, R2 shows linear Arrhenius behaviour. The solid solution were characterised by XRD and the formation mechanism was proposed. The variation of electrical properties with composition is discussed.",

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AU - Huanosta, A.

AU - Alvarez, E.

AU - Villafuerte-Castrejón, M. E.

AU - West, A. R.

PY - 2004/12/2

Y1 - 2004/12/2

N2 - The ac impedance of ceramic samples of Mg-doped LiTaO3 has been measured over the temperature range 600-800 °C. It can be modelled by an equivalent circuit composed of a "dielectric element" R 1C1C2 in parallel with a "leakage resistance" R2. The series component R1C1, represents the polarisation associated with domain reorientation: C1 passes through a maximum at Tc at the same time as R1 passes through an approximate minimum. C2 represents the bulk polarisation, R2 shows linear Arrhenius behaviour. The solid solution were characterised by XRD and the formation mechanism was proposed. The variation of electrical properties with composition is discussed.

AB - The ac impedance of ceramic samples of Mg-doped LiTaO3 has been measured over the temperature range 600-800 °C. It can be modelled by an equivalent circuit composed of a "dielectric element" R 1C1C2 in parallel with a "leakage resistance" R2. The series component R1C1, represents the polarisation associated with domain reorientation: C1 passes through a maximum at Tc at the same time as R1 passes through an approximate minimum. C2 represents the bulk polarisation, R2 shows linear Arrhenius behaviour. The solid solution were characterised by XRD and the formation mechanism was proposed. The variation of electrical properties with composition is discussed.

KW - A. Ceramics

KW - A. Oxides

KW - B. Chemical synthesis

KW - C. X-ray diffraction

KW - D. Crystal structure

KW - D. Dielectric properties

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DO - 10.1016/j.materresbull.2004.08.008

M3 - Artículo

SN - 0025-5408

VL - 39

SP - 2229

EP - 2240

JO - Materials Research Bulletin

JF - Materials Research Bulletin

IS - 14-15

ER -

Electrical properties of Mg-doped LiTaO₃ ceramics

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Keywords

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