钙钛矿结构B位双掺杂 LaMg0.34NixFe0.66-xO3的红外辐射性能

刘庆生; 游拯; 曾少军; 国辉

doi:10.3788/fgxb20163711.1316

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钙钛矿结构B位双掺杂 LaMg_0.34Ni_xFe_0.66-xO₃的红外辐射性能

材料合成及性能 | 更新时间：2020-08-12

- 钙钛矿结构B位双掺杂 LaMg_0.34Ni_xFe_0.66-xO₃的红外辐射性能
- Infrared Radiation Properties of B Bit Double Doped LaMg_0.34Ni_xFe_0.66-xO₃ in Perovskite Structure
- 发光学报 2016年37卷第11期页码：1316-1322
- 作者机构：
  
  江西理工大学冶金与化学工程学院,江西赣州,341000
- 作者简介：
- 基金信息：
  
  国家自然科学基金（51264011，51564019）资助项目()
- DOI：10.3788/fgxb20163711.1316
  中图分类号： O482.31
- 纸质出版日期：2016-11-5，
  
  收稿日期：2016-5-23，
  
  修回日期：2016-7-2，
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刘庆生, 游拯, 曾少军等. 钙钛矿结构B位双掺杂 LaMg0.34NixFe0.66-xO3的红外辐射性能[J]. 发光学报, 2016,37(11): 1316-1322

LIU Qing-sheng, YOU Zheng, ZENG Shao-jun etc. Infrared Radiation Properties of B Bit Double Doped LaMg0.34NixFe0.66-xO3 in Perovskite Structure[J]. Chinese Journal of Luminescence, 2016,37(11): 1316-1322
刘庆生, 游拯, 曾少军等. 钙钛矿结构B位双掺杂 LaMg0.34NixFe0.66-xO3的红外辐射性能[J]. 发光学报, 2016,37(11): 1316-1322 DOI： 10.3788/fgxb20163711.1316.

LIU Qing-sheng, YOU Zheng, ZENG Shao-jun etc. Infrared Radiation Properties of B Bit Double Doped LaMg0.34NixFe0.66-xO3 in Perovskite Structure[J]. Chinese Journal of Luminescence, 2016,37(11): 1316-1322 DOI： 10.3788/fgxb20163711.1316.

摘要

采用溶胶-凝胶法制备了纯的和Mg

-Ni

掺杂的LaFeO

，并对它们在近红外波段的发射率进行了研究和比较。结果表明，34%（摩尔分数）的Mg

和23%（摩尔分数）的Ni

掺杂的LaFeO

即LaMg

0.34

0.23

0.43

在0.2~2m波段的红外发射率达到了0.966，远高于未掺杂LaFeO

的0.446。Mg

-Ni

共掺杂能够显著提高LaFeO

在近红外波段的发射率的原因在于Mg

、Ni

进入铁酸镧的晶格中取代Fe

，引入了杂质能级，氧空位浓度增加，提高了杂质能级吸收以及氧空位吸收，掺杂引起的晶格畸变使得晶格振动吸收增强；此外，电子在Fe

和Fe

之间的极化跃迁，也增强了化合物在相应光谱区域的吸收性能。

Abstract

Pure and Mg

-Ni

doped LaFeO

were prepared by sol-gel method

and their emission rates in the near infrared band were studied and compared. The results show that the infrared emission rate in 0.2-2 m waveband of LaMg

0.34

0.23

0.43

(Mg

mole fraction of 34%

mole fraction of 23%) is 0.966

much higher than that of undoped LaFeO

(0.446). For Mg

-Ni

co-doped LaFeO

come into lanthanum ferrite lattice to substitute Fe

which introduces the impurity levels and increases the oxygen vacancy concentration. The impurity energy absorption and absorption of oxygen vacancies are improved

and the lattice distortion induced by doping makes the lattice vibration absorption enhance. In addition

the polarized transition of electrons between Fe

and Fe

greatly enhances the absorption performance of the compounds in the corresponding spectra. So

-Ni

co-doping can significantly improve the infrared emission rate of LaFeO

关键词

钙钛矿铁酸镧掺杂吸收率红外发射率

Keywords

perovskitelanthanum ferritedopingabsorptivityinfrared emissivity

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