Details

Autor(en) / Beteiligte

• Cong-Hao, BU
• Gang, HE
• Jiang-Tao, LI

Titel

Infrared Emission Property of (Ca, Cr) Co-doped YAG Ceramics

Ist Teil von

• Wu ji cai liao xue bao, 2016-01, Vol.31 (10), p.1094

Erscheinungsjahr

2016

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• (Ca, Cr) co-doped YAG ceramics were synthesized by high temperature solid state reaction. The effects of Ca super(2+) and Cr super(3+) ions doping on the infrared emission properties of YAG ceramics were investigated. X-ray diffraction results showed that the phase composition of the prepared samples were yttrium aluminum garnet, which indicated that the Ca super(2+) and Cr super(3+) irons were incorporated into the crystal lattice of yttrium-aluminate garnet structure. Infrared absorption results showed that the infrared absorptivity of the(Ca, Cr) co-doped samples was 0.90, which was 29 times higher than that of the pure YAG sample(0.03). The band gap of YAG ceramics were decreased 1.77 e V by Ca super(2+) and Cr super(3+) co-doping based on calculation of the absorbance test results. Therefore, the absorption of the free carrier was improved, which is the main reason why the(Ca, Cr) co-doping YAG ceramics have a high emissivity in near infrared wavelength.