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首页> 外文期刊>Materials Science and Engineering. A, Structural Materials >Preparation of YAG:Nd nano-sized powder by co-precipitation method
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Preparation of YAG:Nd nano-sized powder by co-precipitation method

机译：共沉淀法制备YAG：Nd纳米粉

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摘要

Nd~(3+) doped yttrium aluminum garnet Y3Al_5O_(12) (YAG) nano-sized powders were prepared by a co-precipitation method using hydroxypropyl cellulose (HPC) as dispersant. The formation process and structure of the as-prepared sample were investigated by means of TG-DTA, XRD, IR, and TEM. It has been found that the YAG powders were amorphous up to 700 ℃ and transformed into pure phase YAG crystallite at 900 ℃ for 2 h, because of the uniformly distribution of Al and Y elements. The size of YAG powder is about 30 nm in diameter and mono-disperse in the presence of HPC. Optical absorption and emission spectra of nano-crystallites versus Nd~(3+) concentration and sintering temperature were also studied.
机译：采用共沉淀法，以羟丙基纤维素（HPC）为分散剂，制备了Nd〜（3+）掺杂钇铝石榴石Y3Al_5O_（12）（YAG）纳米级粉末。通过TG-DTA，XRD，IR和TEM研究了所制备样品的形成过程和结构。研究发现，由于Al和Y元素的均匀分布，YAG粉末在700℃以下为非晶态，并在900℃下2 h转变为纯相YAG微晶。 YAG粉末的尺寸为直径约30nm，并且在HPC的存在下单分散。研究了纳米微晶的光吸收和发射光谱与Nd〜（3+）浓度和烧结温度的关系。

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