The crystal structure of ionic conductor LaxCe1-xO2-x/2

被引：55
|
作者：
Bae, JS
Choo, WK
Lee, CH
机构：
[1] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon, South Korea
[2] Korea Atom Energy Res Inst, HANARO Ctr, Neutron Beam Applicat Project, Taejon 305600, South Korea
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2004年 / 24卷 / 06期
关键词：
crystal structure; ionic conductor; solid solution; x-ray; neutron;
D O I：
10.1016/S0955-2219(03)00499-0
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The crystal structure of La3+ substituted CeO2 solid solution (LaxCe1-xO2-x/2) has been investigated by X-ray and neutron powder diffractions. The fluorite structure of CeO2 is still maintained up to x=0.4 composition although La3+ is the largest trivalent rare earth ion. For xgreater than or equal to0.5 the crystal structure changes to the pyrochloric cation ordering and the remnant La2O3 is unreacted. This structure can, however, be stabilized by Ti4+ addition or thermal treatment. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1291 / 1294
页数：4
相关论文
共 50 条
  • [1] Highly Efficient LaxCe1-xO2-x/2 Nanorod-Supported Nickel Catalysts for CO Methanation: Effect of La Addition
    Han, Yahong
    Zhao, Jinxian
    Quan, Yanhong
    Yin, Shunan
    Wu, Shiping
    Ren, Jun
    ENERGY & FUELS, 2021, 35 (04) : 3307 - 3314
  • [2] Simulation of the Atomic Structure and Distribution of Vacancies in the Ionic Conductor LaxCe1/2 - xLixTiO3
    Kalkuta, S. A.
    JOURNAL OF NANO- AND ELECTRONIC PHYSICS, 2013, 5 (04)
  • [3] Iodine intercalation in the ionic conductor SrxBi9-xO(27-x)/2
    Scarfe, DP
    Jacobson, AJ
    CHEMISTRY OF MATERIALS, 1997, 9 (12) : 3107 - 3112
  • [4] Functional properties of LaxCe1-xO2- nanocrystals and their bulk ceramics
    Srivastava, Saurabh
    Kumar, Kundan
    Singh, Kushal
    Ojha, Prasanta Kumar
    Chowdhury, Anirban
    JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2019, 30 (03) : 2096 - 2106
  • [5] IONIC-CONDUCTION IN CE1-2XGD2XO2-X
    HURLEY, MD
    HOHNKE, DK
    AMERICAN CERAMIC SOCIETY BULLETIN, 1980, 59 (03): : 379 - 379
  • [6] IONIC-CONDUCTIVITY OF ZR1-XIN2XO2-X
    HOHNKE, DK
    JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1980, 41 (07) : 777 - 784
  • [7] Functional properties of LaxCe1−xO2−δ nanocrystals and their bulk ceramics
    Saurabh Srivastava
    Kundan Kumar
    Kushal Singh
    Prasanta Kumar Ojha
    Anirban Chowdhury
    Journal of Materials Science: Materials in Electronics, 2019, 30 : 2096 - 2106
  • [8] Synthesis and crystal structure of Mg1-xCu2+xO3 (0.130 ≤ x ≤ 0.166)
    Oh-ishi, K
    Tsuchiya, Y
    Iizuka, Y
    Yamane, H
    JOURNAL OF SOLID STATE CHEMISTRY, 2001, 160 (01) : 251 - 256
  • [9] Ionic conduction and crystal structure of β-Pb1-xSnxF2 (x≤0.3)
    Ito, Y
    Mukoyama, T
    Ashio, K
    Yamamoto, K
    Suga, Y
    Yoshikado, S
    Julien, C
    Tanaka, T
    SOLID STATE IONICS, 1998, 106 (3-4) : 291 - 299
  • [10] Structural and dielectric properties of the fluorite-type LaxCe1-xO2-δ ceramics
    Singh, Kushal
    Kumar, Kundan
    Nayak, Sanjib
    Joshi, Deep Chandra
    Alom, Mir Motakabbir
    Thota, Subhash
    Chowdhury, Anirban
    JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2017, 50 (49)
12345