Investigation of the thermal expansion and heat capacity of the CaCu3Ti4O12 ceramics

被引：9

作者：

Gorev, M. V. ^{[1
,2
]}

Flerov, I. N. ^{[1
,2
]}

Kartashev, A. V. ^{[1
]}

Guillemet-Fritsch, S. ^{[3
]}

机构：

[1] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia

[2] Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660074, Russia

[3] Univ Toulouse, Inst Carnot CIRIMAT CNRS UPS INP, F-31030 Toulouse, France

来源：

PHYSICS OF THE SOLID STATE | 2012年 / 54卷 / 09期

关键词：

GIANT DIELECTRIC-CONSTANT;

D O I：

10.1134/S1063783412090120

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The thermal expansion of the CaCu3Ti4O12 ceramics has been measured over a wide temperature range 120-1200 K. The high quality of the samples under study has been confirmed by good agreement of the results of measurements of the heat capacity in the range 2-300 K and in the vicinity of the phase transition of magnetic nature at 25 K with the data for the single crystal. No anomalies in the thermal expansion that can be associated with the phase transition at 726-732 K assumed by other investigators have been found. The influence exerted on the thermal expansion by the heat treatment of the sample in a helium atmosphere and in air has been investigated.

引用

页码：1785 / 1789

页数：5