Estimation of Thermal Expansion Coefficients of Rare-Earth Garnets in a Wide Temperature Range

被引：4

作者：

Yeganyan, A. V. ^{[1
,2
]}

Kokanyan, E. P. ^{[1
,2
]}

Hovhannesyan, K. L. ^{[2
]}

Butaeva, T. I. ^{[2
]}

Hovsepyan, L. E. ^{[1
]}

机构：

[1] Armenian State Abovyan Pedag Univ, Yerevan, Armenia

[2] NAS Armenia, Inst Phys Res, Ashtarak, Armenia

来源：

JOURNAL OF CONTEMPORARY PHYSICS-ARMENIAN ACADEMY OF SCIENCES | 2018年 / 53卷 / 02期

关键词：

rare-earth garnet; thermal expansion; thermal conductivity; CRYSTALS; GROWTH;

D O I：

10.3103/S106833721802007X

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Simple expressions were obtained for the thermal expansion coefficients of the rare-earth garnets, which allow to estimate their values in a wide temperature range in cases, when either the lattice unit cell parameters or the density of the material are known at 300 K. The expression giving the relationship between the thermal expansion and thermal conductivity coefficients for the rare-earth garnets has also been obtained. It is shown that the calculated values obtained with the use of these expressions are in a good agreement with the available experimental data for the garnets of different composition.

引用

页码：152 / 156

页数：5

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