Excellent near-infrared transparency realized in low-symmetry orthorhombic (K,Na)NbO3-based submicron ceramics

SCRIPTA MATERIALIA

卷:154

Article

Chai, Qizhen¹  Zhao, Xumei¹  Liang, Pengfei²  Wu, Di¹  Chao, Xiaolian¹  Yang, Zupei¹ 

[1] Shaanxi Normal Univ, Sch Mat Sci & Engn, Key Lab Macromol Sci Shaanxi Prov, Shaanxi Key Lab Adv Energy Devices, Xian 710062, Shaanxi, Peoples R China

[2] Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Shaanxi, Peoples R China

关键词: Ceramics;    Microstructure;    Orthorhombic crystal structure;    Optical properties;    Electrical properties;   

DOI  :  10.1016/j.scriptamat.2018.05.022

来源: Elsevier

【 摘 要 】

We report that an extraordinary near-infrared transparency, i.e., T = 91% at-2000 nm, was achieved in low symmetry orthorhombic 0.94K(0.5)Na(0.5)NbO(3)-0.06Bi(Zn2/3Nb1/3)O-3 (KNN-0.06BZN) ceramics. The novel transmittance originates from the combination of its submicron-grain size (<0.2 mu m) and relaxor behavior (gamma = 1.71). Besides, the retaining of the low-symmetry orthorhombic phase structure assured decent electrical properties in the ceramics: epsilon(max)= 1337, and P-r = 5.28 mu C/cm(2) as x = 0.06. Our findings might open a new window for the compatibility of superior transmittance and decent electrical properties. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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