温度及压力作用下的铁酸锌纳米颗粒结晶过程研究  

Study of Crystallization of Nano-ZnFe_2O_4 Under Temperature and Pressure

作　　者：邹旭[1,2] 许娴[1] 付海川 张铁民[1] 彭菊媛 王英楠[2] 李子亨[2] 

机构地区：[1]海南师范大学物电学院,海南海口571158 [2]吉林大学超硬材料国家重点实验室,吉林长春130012 [3]海南师范大学图书馆,海南海口571158

出　　处：《海南师范大学学报（自然科学版）》2014年第2期147-149,共3页Journal of Hainan Normal University（Natural Science）

基　　金：海南省自然科学基金项目(513146)

摘　　要：通过溶胶-凝胶法制备铁酸锌前驱物,设置温度范围为200～600℃对前驱物进行3 h灼烧处理;并取1 g前驱物原粉在5 MPa压强下作压片处理,500℃下灼烧3 h.通过XRD,Raman表征样品并观察铁酸锌的结晶过程,研究压强和温度对合成铁酸锌纳米晶的影响.发现样品经5 MPa压强处理后,Raman图反映出铁酸锌的两个常压下不明显的二维振动模式225 cm-1和249 cm-1处峰位特征明显.结果表明随着灼烧温度的升高,铁酸锌粒径增大;对前驱物加压能够促进铁酸锌晶体的形成.Nano-ZnFe20＋ was prepared by the Sol-Gel method and the process of transformation from precedence to Na- no-ZnFe20＋ crystal influenced by the temperature and pressure was studied by the Raman, X-Ray Diffraction. It was shown that prepared samples have a spinel structure, of which particle sizes are increased with the calcining temperature. Under a pressure of 5MPa, two obvious 2-dimensions vibration modes of ZnFe204 （225cm-1, 249 cm-1）were observed, which were not obvious at ambient pressure. It was found that the process of forming the ZnFe20＋ crystal has been remarkably facilitated.

关 键 词：纳米 铁酸锌 压强 振动模式 结晶 

分 类 号：O521.21[理学—高压高温物理]