Synthesis and crystallization of lithium-yttrium orthoborate Li₆Y(BO₃)₃ phase

详细信息	查看全文 | 推荐本文 |

• 作者：Á ; . Pé ; ter^a ; ^{peter.agnes@wigner.mta.hu} ; K. Polgá ; r^a ; M. Tó ; th^b
• 关键词：A1 ; Solidification ; A2 ; Growth from melt ; B1 ; Borates ; B1 ; Li6Y(BO3)3 ; B2 ; Phosphors ; B3 ; Scintillators
• 刊名：Journal of Crystal Growth
• 出版年：2012
• 期刊代码：49_00220248
• 类别：ch
• 出版时间：1 May, 2012
• 卷：346
• 期：1
• 页码：69-74
• 文件大小：861 K

摘要

Single crystals of Li₆Y(BO₃)₃ have been grown by both the Bridgman and Czochralski methods. It was found that the complex nature of the melt solidifications affects the efficiency of the crystallization process and the composition of the grown crystals. High supercooling favored melt dissociation and the formation of thermodynamically unstable phases Li₃Y(BO₃)₂ and Li₃Y₂(BO₃)₃. Applying X-ray phase analysis for air-quenched ceramic samples it was shown that the room temperature stability region of the off-stoichiometric Li₆Y(BO₃)₃ phase is extended towards the B₂O₃ rich, Y₂O₃ deficient compositions.