Helium ion irradiation effects on neodymium and cerium co-doped Gd_2Zr_2O_7 pyrochlore ceramic

作     者：Qijun Hu Junsen Zeng Lan Wang Xiaoyan Shu Dadong Shao Haibin Zhang Xirui Lu 

作者机构：School of Civil Engineering and ArchitectureSouthwest Petroleum University Fundamental Science on Nuclear Wastes and Environmental Safety LaboratorySouthwest University of Scienoe and Technology Institute of Plasma PhysicsChinese Academy of Sciences Institute of Nuclear Physics and ChemistryChina Academy of Engineering Physics 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2018年第36卷第4期

页      面：398-403页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Project supported by the National Natural Science Foundation of China(21507105,51574201) Ministry of Housing and Urban-Rural Development(2014-K3-037) Sichuan Science and Technology Innovation Talent Project(2016119) Scientific and Technical Youth Innovation Group(Southwest Petroleum University)(2015CXTD05) 

主　　题：Helium ion irradiation Ceramic Pyrochlore Co doping Rare earths 

摘      要：This paper studies the helium ions irradiation effects on Nd and Ce co-doped Gd_2 Zr_2 O_7 ceramics. where Nd replaces the Gd site and Ce replaces the Zr site respectively. A series of（Gd_（1-x）Nd_x）_2（Zr_（1-y）Ce_y）_2 O_7（0 ≤ x, y ≤ 1） ceramics were irradiated with a 500 keV He ions at room temperature at fluences ranging from 1 × 10^（15） to 1 × 10^（17） ions/cm^2. The irradiated samples were characterized using GIXRD, Raman and SEM measurements. From the GIXRD and Raman observations, the results indicate that all the samples display a deficient fluorite structure after irradiation. The irradiation toleration increases with the irradiation depth increasing under experimental conditions, and Nd_2 Ce_2 O_7 has the best irradiation stability in the（Gd_（1-x）Nd_x）_2（Zr_（1-y）Ce_y）_2 O_7（0≤ x. y≤1）. Based on SEM results, the irradiated samples are still relatively dense and uniform, and no second phase exists.