Thermal conductivity of rare-earth scandates in comparison to other oxidic substrate crystals

被引：14

作者：

Hidde, Julia ^{[1
,2
]}

Guguschev, Christo ^{[1
]}

Ganschow, Steffen ^{[1
]}

Klimm, Detlef ^{[1
,2
]}

机构：

[1] Leibniz Inst Kristallzuchtung, Max Born Str 2, D-12489 Berlin, Germany

[2] Humboldt Univ, Inst Chem, Brook Taylor Str 2, D-12489 Berlin, Germany

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 738卷

关键词：

Oxide materials; Anisotropy; Heat capacity; Heat conduction; Calorimetry; Thermal analysis; (LA; SR)(AL; TA)O-3; SINGLE-CRYSTALS; CZOCHRALSKI GROWTH; HEAT-CONDUCTION; FLASH METHOD; SOI MOSFETS; DIFFUSIVITY; TEMPERATURE; EXPANSION; SAPPHIRE; AL2O3;

D O I：

10.1016/j.jallcom.2017.12.172

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

High-temperature thermal properties of three neighboring rare-earth scandates DyScO3, TbScO3 and GdScO3 were compared to La0.29Sr0.71Al0.65Ta0.35O3 (LSAT) and sapphire. To calculate thermal conductivity, heat capacity and thermal diffusivity were measured by differential scanning calorimetry and laser flash technique, respectively. DyScO3 and TbScO3 showed an untypical rise in the thermal conductivity above 900 K, while for GdScO3, LSAT and sapphire the expected decrease at elevated temperatures could be observed. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：415 / 421

页数：7

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