Rapid Growth of High-Quality Rutile TiO2 Single Crystals through a Laser Floating Zone Method

The rapid growth of rutile TiO2 single crystals through a laser floating zone (LFZ) method was demonstrated. LFZ has a higher power density, which is suitable for the growth of TiO2 crystals with a high melting point. By optimizing the crystal growth parameters, including the growth rate, gas atmosp...

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Bibliographic Details
Published inCrystals (Basel) Vol. 12; no. 12; p. 1789
Main Authors Wu, Jialing, Ma, Shihui, Hu, Zhanggui, Wang, Jiajia, Wang, Jiyang, Wu, Yicheng
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.12.2022
Subjects
Crystal growth
Grain boundaries
Laser damage
laser floating zone (LFZ) method
Lasers
Melting points
optical properties
rapid growth
Rutile
rutile TiO2 crystals
Single crystals
Thermal expansion
Titanium dioxide
Yield point
China
Japan
Germany
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Summary:The rapid growth of rutile TiO2 single crystals through a laser floating zone (LFZ) method was demonstrated. LFZ has a higher power density, which is suitable for the growth of TiO2 crystals with a high melting point. By optimizing the crystal growth parameters, including the growth rate, gas atmosphere, and rotation rate, the crystals could achieve their largest size of φ 9 mm × 25 mm, with a growth cycle of 12 h, and no cracks appeared. The properties of the obtained crystals were close to those of the crystals grown using other schemes, with a whole transmission range of 0.41–6.56 μm, thermal expansion coefficient of 9.92 × 10−6/K, and laser damage threshold of 1.44 GW/cm2. The achieved results indicated that the crystals have high quality and good integrity when grown using LFZ and also imply a new choice for the rapid growth of rutile TiO2 single crystals.
ISSN:2073-4352
2073-4352
DOI:10.3390/cryst12121789