摘要
采用6 mol/L KOH作为矿化剂,SnO2、CoCl2和ZnO按物质的量比为0.02∶0.5∶1的比例混合作为前驱物,填充度70%,温度430℃,时间24 h,采用水热法制备出Co、Sn元素掺杂的ZnO晶体。Sn元素掺杂明显改变了晶体的极性生长特征,较大面积的显露正极面c{0001}面,还显露柱面m{1010}、正锥面p{1011}、负锥面{101-1-}和负极面{0001}以及正锥面{1012}和负锥面{101-2-},晶体长度约为50μm。经过EDS测量表征,发现制备的ZnO单晶中Co元素的含量达到10.89at%,生成物中出现少量Co氧化物,SQUID测量表明样品主要表现为顺磁性。
In this paper,cobalt（Co） and tin（Sn）-doped ZnO crystals have been synthesized by hydrothermal method with 6 mol/L KOH as mineralizer,meanwhile,the mixture of SnO2,CoCl2 and ZnO（mol ratio is 0.02：0.5：1） as precursor.The fill factor was 70% and kept the reaction temperature of 430 ℃ for 24 h.Sn-doped has significantly changed the polar growth characteristics of the crystals.Surface of {0001} was exposed largely,cylindrical face {1010},positive pyramid face {1011},negative pyramidal face {101-1-},negative polar face {0001},positive pyramidal face {1012} and negative pyramidal face {101-2-} were also exposed.The size of the crystals was about 50 μm.It was found that Co element in the crystals reached 10.89at% and a small amount of Co oxide appeared in the product through EDS characterization.SQUID test showed that the samples were mainly paramagnetic.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2012年第5期1265-1269,共5页
Journal of Synthetic Crystals
基金
国家自然科学基金(50472037,50672020,50772027)
河北省自然科学基金(E2006001008,E2007000197)
关键词
水热法
氧化锌
顺磁性
hydrothermal method
ZnO
paramagnetic
