Microstructural characteristics of Nd：YAG powders leading to transparent ceramics

• Published in: Journal of rare earths Vol. 29; no. 6; pp. 585 - 591
• Main Author: 张晓琳 刘铎 刘宏 王继扬 秦海明 桑元华
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-06-2011; State Key Laboratory of Crystal Materials. Shandong University, Jinan 250100, China
• Subjects: Ceramics; chemical synthesis; Crystallites; defects; Density; Microstructure; Nanocomposites; Nanomaterials; Nanostructure; Nd：YAG激光; Rare earth metals; rare earths; X-ray diffraction; Y3Al5O12; 均相沉淀; 微观结构特征; 纳米粉体; 组织; 老化时间; 陶瓷粉末; chemical synthesis; X-ray diffraction; ceramics; defects; rare earths
• ISSN: 1002-0721; 2509-4963
• DOI: 10.1016/S1002-0721(10)60502-9

We reported on the successful synthesis of the Nd：YAG （Nd：Y3Al5O12） nano-powders by using urea as the precipitant with the microwave assisted homogeneous precipitation （MAHP） method. The different microstructural characteristics of the Nd：YAG nano-powders were affected by the concentrations of （Y3＋＋Nd3＋） and Al3＋ （[Y3＋＋Nd3＋]=0.06 mol/L, [Al3＋]=0.1 mol/L）, aging time （6 d） and aging condition （in vessel）. The optimum microstructural characteristics of the high quality Nd：YAG nano-powders leading to transparent Nd：YAG ceramics including the pure YAG phase, the smallest crystallite size, a uniform crystallite size distribution, less density defects, uniform micro-components and the proper molar ratio of （Y3＋＋Nd3＋） and Al3＋ （0.6148） were discussed.