Prediction of thermal radiative properties (300-1000 K) of La2NiO4+δ ceramics

被引：7

作者：

Ta, M. T. ^{[1
]}

Rolland, J. Y. ^{[1
]}

Echegut, P. ^{[1
]}

Rousseau, B. ^{[1
]}

Zaghrioui, M. ^{[2
]}

Giovannelli, F. ^{[2
]}

Gomart, H. ^{[3
]}

Lenormand, P. ^{[4
]}

Ansart, F. ^{[4
]}

机构：

[1] CNRS, CEMHTI, UPR 3079, F-45071 Orleans, France

[2] IUT Blois, LEMA, CNRS, UMR 6157, F-41029 Blois, France

[3] Ecole Cent Paris, EM2C, CNRS, UPR 288, F-92295 Chatenay Malabry, France

[4] Univ Toulouse 3, CIRIMAT, CNRS, UMR 5085, F-31062 Toulouse, France

来源：

APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 18期

关键词：

OPTICAL CONDUCTIVITY; TRANSPORT-PROPERTIES; SINGLE-CRYSTAL; OXIDES; SPECTRA;

D O I：

10.1063/1.3511344

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A multiscale numerical model is developed to predict the thermal radiative properties (TRP) of rough La2NiO4+delta coatings. The model integrates intrinsic and extrinsic contributions related to the chemical composition and the texture, respectively. High-temperature infrared reflectivity and thermogravimetric measurements on a La2NiO4+delta single crystal make it possible to understand the role of the excess oxygen in the intrinsic TRP. We show that dense ceramics with thicknesses higher than 4 mu m are optically thick, and that one can adjust the surface roughness parameters to predict their TRP. (c) 2010 American Institute of Physics. [doi:10.1063/1.3511344]

引用

页数：3

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