Structure and dielectric properties of Ba1-xLa xTi1-xCrxO3 ceramics

Mamoru Fukunaga; Guobao Li; Yoshiaki Uesu; Kay Kohn

doi:10.1080/00150190390206257

Structure and dielectric properties of Ba_1-xLa _xTi_1-xCr_xO₃ ceramics

Mamoru Fukunaga, Guobao Li, Yoshiaki Uesu, Kay Kohn

School of Science

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

6 Citations (Scopus)

Abstract

In order to develop useful lead-free ferroelectric materials based on BaTiO 3 , Ba_1-x La_x Ti_1-x Cr_x O ₃ ceramics were synthesized and their dielectric properties were studied. The crystal structure of Ba_1-x La_x Ti _1-x Cr_x O₃ changes in the sequence of tetragonal, cubic, rhombohedral and orthorhombic as x increases. Curie temperature T C decreases largely as x increases. The samples except for x = 0.003 show broad peak of high dielectric constant with small dielectric loss. The frequency dispersion like in relaxors is observed below room temperature with x = 0.08.

Original language	English
Pages (from-to)	79-84
Number of pages	6
Journal	Ferroelectrics
Volume	286
DOIs	https://doi.org/10.1080/00150190390206257
Publication status	Published - Jun 1 2003

Keywords

BaTiO
Ceramics
Complex perovskite
Ferroelectrics
Relaxors

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1080/00150190390206257

Cite this

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title = "Structure and dielectric properties of Ba1-xLa xTi1-xCrxO3 ceramics",

abstract = "In order to develop useful lead-free ferroelectric materials based on BaTiO 3 , Ba1-x Lax Ti1-x Crx O 3 ceramics were synthesized and their dielectric properties were studied. The crystal structure of Ba1-x Lax Ti 1-x Crx O3 changes in the sequence of tetragonal, cubic, rhombohedral and orthorhombic as x increases. Curie temperature T C decreases largely as x increases. The samples except for x = 0.003 show broad peak of high dielectric constant with small dielectric loss. The frequency dispersion like in relaxors is observed below room temperature with x = 0.08.",

keywords = "BaTiO, Ceramics, Complex perovskite, Ferroelectrics, Relaxors",

author = "Mamoru Fukunaga and Guobao Li and Yoshiaki Uesu and Kay Kohn",

note = "Funding Information: This study was partly supported by the grant-in-aid from Ministry of Education, Culture and Sports, and the grant-in-aid for Research and Development of New Technology of the Association of Private Universities in Japan. The author (M.F.) acknowledges the finantial support from Murata Science Foundation.",

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TY - JOUR

T1 - Structure and dielectric properties of Ba1-xLa xTi1-xCrxO3 ceramics

AU - Fukunaga, Mamoru

AU - Li, Guobao

AU - Uesu, Yoshiaki

AU - Kohn, Kay

N1 - Funding Information: This study was partly supported by the grant-in-aid from Ministry of Education, Culture and Sports, and the grant-in-aid for Research and Development of New Technology of the Association of Private Universities in Japan. The author (M.F.) acknowledges the finantial support from Murata Science Foundation.

PY - 2003/6/1

Y1 - 2003/6/1

N2 - In order to develop useful lead-free ferroelectric materials based on BaTiO 3 , Ba1-x Lax Ti1-x Crx O 3 ceramics were synthesized and their dielectric properties were studied. The crystal structure of Ba1-x Lax Ti 1-x Crx O3 changes in the sequence of tetragonal, cubic, rhombohedral and orthorhombic as x increases. Curie temperature T C decreases largely as x increases. The samples except for x = 0.003 show broad peak of high dielectric constant with small dielectric loss. The frequency dispersion like in relaxors is observed below room temperature with x = 0.08.

AB - In order to develop useful lead-free ferroelectric materials based on BaTiO 3 , Ba1-x Lax Ti1-x Crx O 3 ceramics were synthesized and their dielectric properties were studied. The crystal structure of Ba1-x Lax Ti 1-x Crx O3 changes in the sequence of tetragonal, cubic, rhombohedral and orthorhombic as x increases. Curie temperature T C decreases largely as x increases. The samples except for x = 0.003 show broad peak of high dielectric constant with small dielectric loss. The frequency dispersion like in relaxors is observed below room temperature with x = 0.08.

KW - BaTiO

KW - Ceramics

KW - Complex perovskite

KW - Ferroelectrics

KW - Relaxors

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