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20 ml of 0.25 M YCl3 aqueous solution and 0.25 mmol of rare earth chloride (Tm3+, Tb+3, and Eu3+) powder corresponding to 5 mol% rare earth ion doping were taken in a beaker separately and stirred for about 15 min. Then, 20 ml of an aqueous solution of 5 M KOH was added and the mixed solution was stirred for 5 min to form a white colloidal solution. |
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50100(¿Õλ´ú·¢): ½ð±Ò+10, ¸Ðл½»Á÷ 2016-08-22 21:24:48
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