| 纳米晶稀土复合氧化物Dy_(0.5)Sr_(0.5)CoO_(3-Y)的光谱特性研究 |
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| 引用本文： | 魏坤,石燕,吴芳英,贺伦燕.纳米晶稀土复合氧化物Dy_(0.5)Sr_(0.5)CoO_(3-Y)的光谱特性研究[J].光谱学与光谱分析,2001(2). |
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| 作者姓名： | 魏坤 石燕 吴芳英 贺伦燕 |
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| 作者单位： | 南昌大学稀土工程中心!330047南昌 |
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| 摘 要： | 研究了纳米晶Dy0 5 Sr0 5 CoO3 Y 的光谱特性 ,结果表明 :当晶粒尺寸减小至纳米量级时 ,发射光谱的激子峰波长蓝移 ;XRD ,FTIR谱表明 ,与体材料相比 ,纳米晶的衍射峰宽化 ,纳米晶的红外谱带大劈裂和宽化 ,表现为纳米尺寸量子化效应。
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| 关 键 词： | 纳米晶 蓝移 超灵敏跃迁 量子尺寸效应 |
Study on the Spectral Properties of Nanocrystals Dy_(0.5)Sr_(0.5) CoO_(3-Y) |
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| Kun WEI,Yan SHI,Fangying WU and Lunyan HE Rare Earth Technical Centre of Nanchang University, Nanchang.Study on the Spectral Properties of Nanocrystals Dy_(0.5)Sr_(0.5) CoO_(3-Y)[J].Spectroscopy and Spectral Analysis,2001(2). |
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| Authors: | Kun WEI Yan SHI Fangying WU and Lunyan HE Rare Earth Technical Centre of Nanchang University Nanchang |
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| Institution: | Kun WEI,Yan SHI,Fangying WU and Lunyan HE Rare Earth Technical Centre of Nanchang University,330047 Nanchang |
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| Abstract: | The spectral properties of nanocrystallines Dy 0.5 Sr 0.5 CoO 3- Y were studied.The results show that the band edge of emission spectra is blue shift when the size of particles decrease to nanometer.The infrared absorption peak fission of nanocrystallines and the XRD diffraction peak of nanocrystallines were widen than microcrystallines.It was appeared as quantum size effect. |
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| Keywords: | Nanocrystalline Blue shift f-f transfition Quantum size effect |
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