Tin selenide synthesized by a chemical route: the effect of the annealing conditions in the obtained phase

被引:23
作者
Bernardes-Silva, AO [1 ]
Mesquita, AF
Neto, ED
Porto, AO
de Lima, GM
Ardisson, JD
Lameiras, FS
机构
[1] CDTN, CNEN, Lab Mat & Combust Nucl, BR-30123970 Belo Horizonte, MG, Brazil
[2] Univ Fed Minas Gerais, ICEx, Dept Quim, BR-31270901 Belo Horizonte, MG, Brazil
[3] CDTN, CNEN, BR-30123970 Belo Horizonte, MG, Brazil
关键词
semiconductor; tin selenide; chemical synthesis; Sn-119; Mossbauer; X-ray diffraction; phase transitions;
D O I
10.1016/j.ssc.2005.06.014
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The effects of different annealing conditions over the tin selenide obtained from a chemical route are presented in this work. The tin selenide was annealed at 300 and 600 degrees C under hydrogen, nitrogen and argon atmospheres. The materials were characterized by X-ray diffraction and Sn-119 Mossbauer spectroscopy. In the 'as synthetized' material a considerably amount of tin oxide (57%) was detected by Mossbauer spectroscopy. After thermal annealing the amount of these oxides varied according to the temperature and atmosphere used. At 600 degrees C/hydrogen the smallest amount of tin oxide was obtained (20%). These oxides were formed during the synthetic procedure through the hydrolysis of tin chloride used as reagent. (C) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:677 / 682
页数:6
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