纳米晶Dy_(1-x)Sr_xCoO_(3-y)晶体结构和红外光谱  

Crystal Structure and Infrared Spectra of Nanocrystalline Rare Earth Mixed Oxides Dy_(1-x)Sr_xCoO_(3-y)

作　　者：魏坤[1] 石燕[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：《物理化学学报》1998年第10期957-960,共4页Acta Physico-Chimica Sinica

摘　　要：The crystal structure and infrared absorption spectra of nanocrystallineDy1-xSrxCoO3-y (0.0≤x≤1.0) were studied. The results show that the latttice paratmeters werehigger than microcrystallines. The mixed oxides crystallized in orthorhombic (0.0≤x≤0.5) ortetragonal system (0.6≤x≤0.9) or hexagonal system (x=1.0 ). With symmetry centre of crystalstructure variation, the spectra bands of nanocrystallines were fissioned. The infrarea absorptionspectra of nanocrystallines appeared as quantum size effect.The crystal structure and infrared absorption spectra of nanocrystallineDy1-xSrxCoO3-y (0.0≤x≤1.0) were studied. The results show that the latttice paratmeters werehigger than microcrystallines. The mixed oxides crystallized in orthorhombic (0.0≤x≤0.5) ortetragonal system (0.6≤x≤0.9) or hexagonal system (x=1.0 ). With symmetry centre of crystalstructure variation, the spectra bands of nanocrystallines were fissioned. The infrarea absorptionspectra of nanocrystallines appeared as quantum size effect.

关 键 词：纳米晶 红外光谱 复合氧化物 镝 锶 钴 气敏材料 

分 类 号：O614.342[理学—无机化学] O657.1[理学—化学]