CAJ | 학술논문

采用微波辅助溶胶-凝胶法制备了YMnO3纳米粉体，利用FTIR和TG-DSC对凝胶的组成及热分解过程进行分析，并通过XRD、FSEM、TEM和磁性能测试对制得的纳米粉体进行表征。结果表明：与传统的溶胶-凝胶法相比，该研究中采用的微波辅助溶胶-凝胶法可以在较短的制备时间内、较低的煅烧温度下得到单相的YMnO3粉体，且粉体颗粒细小，尺寸分布较均匀，平均粒径小于100 nm。磁性能研究结果表明制得的YMnO3纳米粉体在室温下表现为顺磁性特征。
채용미파보조용효-응효법제비료YMnO3납미분체，이용FTIR화TG-DSC대응효적조성급열분해과정진행분석，병통과XRD、FSEM、TEM화자성능측시대제득적납미분체진행표정。결과표명：여전통적용효-응효법상비，해연구중채용적미파보조용효-응효법가이재교단적제비시간내、교저적단소온도하득도단상적YMnO3분체，차분체과립세소，척촌분포교균균，평균립경소우100 nm。자성능연구결과표명제득적YMnO3납미분체재실온하표현위순자성특정。
YMnO3 nano-powders were synthesized by microwave-assisted sol-gel method. The composition and the thermo-decomposing process of the gel were studied by means of IR spectrum and TG-DSC analysis. The phase constitutution and particle morphology of the YMnO3 powders were characterized by XRD, FSEM and TEM. The magnetic properties of YMnO3 nano-powders were also studied. The results show that, by using microwave-assisted sol-gel method, nano-sized YMnO3 powders can be synthsized under lower calcined temperature in relatively shorter time compared with the traditional sol-gel method. The YMnO3 powders prepared by the microwave-assisted method have a uniform particle size smaller than 100 nm. The magnetic hysteresis loop result shows that YMnO3 nano-powders exhibit paramagnetic characteristic at room temperature.