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  

Study on the Spectral Properties of Nanocrystals Dy_(0.5)Sr_(0.5) CoO_(3-Y)

作　　者：魏坤[1] 石燕[1] 吴芳英[1] 贺伦燕[1] 

机构地区：[1]南昌大学稀土工程中心,南昌330047

出　　处：《光谱学与光谱分析》2001年第2期160-162,共3页Spectroscopy and Spectral Analysis

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。The spectral properties of nanocrystallines Dy0.5Sr0.5CoO3-Y were studied. The results show that the hand edge of emission spectra is blue shift when the size of particles decease 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.

关 键 词：纳米晶 蓝移 超灵敏跃迁 量子尺寸效应 稀土复合氧化物 光谱特性 

分 类 号：TB383[一般工业技术—材料科学与工程] O433[机械工程—光学工程]