Synthesis of Complex Lanthanum and Calcium Titanates with a Perovskite Structure and Their Electric Properties Studied at High Temperatures

Synthesis of Complex Lanthanum and Calcium Titanates with a Perovskite Structure and Their... Phase formation in the CaTiO3 – La2O3 system in the concentration range 0 – 40 mol.% La2O3 is revisited. Conductivity, dielectric constant, and dielectric loss are measured in the temperature range of 5 – 600°C, and electric strength and the temperature coefficient for dielectric constant (TCε) of perovskite phases in the CaTiO3 – La2O3 system are determined. The ceramic materials studied have a low dielectric loss depending but slightly on temperature [tan d = (1 – 6) × 10–4], a high dielectric constant (ε = 30 – 120), and a TCε varying from – 1480 × 10–6 deg–1 to + 10,500 × 10–6 deg–1 with composition; the zero point for TCε is identified at 23 mol.% La2O3. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Refractories and Industrial Ceramics Springer Journals

Synthesis of Complex Lanthanum and Calcium Titanates with a Perovskite Structure and Their Electric Properties Studied at High Temperatures

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Publisher
Kluwer Academic Publishers-Plenum Publishers
Copyright
Copyright © 2002 by Plenum Publishing Corporation
Subject
Materials Science; Characterization and Evaluation of Materials; Materials Science, general; Ceramics, Glass, Composites, Natural Materials
ISSN
1083-4877
eISSN
1573-9139
D.O.I.
10.1023/A:1023428624243
Publisher site
See Article on Publisher Site

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