| 室温稀磁半导体Zn_(0.9)Ni_(0.1)O纳米棒的制备与表征 |
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| 引用本文： | 彭坤,金晖,周灵平,胡爱平,唐元洪.室温稀磁半导体Zn_(0.9)Ni_(0.1)O纳米棒的制备与表征[J].湖南农业大学学报(自然科学版),2010,37(1). |
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| 作者姓名： | 彭坤 金晖 周灵平 胡爱平 唐元洪 |
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| 作者单位： | 湖南大学材料科学与工程学院;中南大学粉末冶金国家重点实验室; |
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| 基金项目： | 国家自然科学基金资助项目(50501008) |
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| 摘 要： | 利用溶胶-凝胶方法制备了Zn0.9Ni0.1O纳米棒.运用X射线衍射分析表明样品中不存在镍及镍的氧化物,镍进入晶格中取代了部分Zn原子的位置.SEM显示煅烧温度是影响其形貌的主要因素.随着温度的升高,样品形貌逐渐从棒状变为颗粒状.样品的磁学性能由振动样品磁强计测量,发现在室温下存在明显的铁磁性,并且通过M-T曲线得到Zn0.9Ni0.1O居里温度为575 K左右,表明其磁性来源于稀磁半导体.
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| 关 键 词： | 稀磁半导体 ZnO 纳米棒 |
Synthesis and Characterization of Zn_(0.9)Ni_(0.1)O Room Temperature Diluted Magnetic Semiconductor Nanorods |
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| PENG Kun,JIN Hui,ZHOU Ling-ping,HU Ai-ping,TANG Yuan-hong.Synthesis and Characterization of Zn_(0.9)Ni_(0.1)O Room Temperature Diluted Magnetic Semiconductor Nanorods[J].Journal of Hunan Agricultural University,2010,37(1). |
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| Authors: | PENG Kun JIN Hui ZHOU Ling-ping HU Ai-ping TANG Yuan-hong |
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| Affiliation: | 1.College of Materials Science and Engineering;Hunan Univ;Changsha;Hunan 410082;China;2.State Key Laboratory of Powder Metallurgy;Central South Univ;Hunan 410083;China |
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| Abstract: | Zn0.9Ni0.1O nanorods were fabricated by sol-gel method.The XRD results showed that there was not any pure nickel or nickel-oxide in the samples,and the majority of Ni atoms was incorporated at Zn substitutional sites.The calcined temperature was the key factor of the formation of nanorods indicated by SEM images.The sample turned to the punctate grains from pillars with the tempareture raised.The measurement of magnetism was carried out by a vibrating samples magnetometer(VSM),and it was found that the samp... |
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| Keywords: | diluted magnetic semiconductor ZnO nanorods |
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