Size dependent ferromagnetism in cerium oxide (CeO2) nanostructures independent of oxygen vacancies

被引：115
|
作者：
Liu, Yinglin [1 ]
Lockman, Zainovia [2 ]
Aziz, Azizan [2 ]
MacManus-Driscoll, Judith [1 ]
机构：
[1] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England
[2] Univ Sains Malaysia, Sch MAt & Mineral Resources Engn, Nibong Tebal 14300, Penang, Malaysia
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2008年 / 20卷 / 16期
关键词：
D O I：
10.1088/0953-8984/20/16/165201
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Nanosized cerium oxide (CeO2) powders of different sizes were synthesized through homogeneous precipitation. Ferromagnetism was observed only in sub-20 nm powders. Ferromagnetic transition temperatures above room temperature and saturation magnetization values of 0.023 mu(B) per CeO2 formula unit were measured. Chemical analysis of the powders showed that trace ferromagnetic impurities could not be responsible for the magnetic signals. Carefully controlled coulometric cyclic annealing studies combined with photoluminescence measurements showed that oxygen vacancies do not mediate the ferromagnetism in the samples.
引用
收藏
页数：5
相关论文
共 50 条
  • [1] Ferromagnetism induced by oxygen and cerium vacancies above the percolation limit in CeO2
    Fernandes, V.
    Schio, P.
    de Oliveira, A. J. A.
    Ortiz, W. A.
    Fichtner, P.
    Amaral, L.
    Graff, I. L.
    Varalda, J.
    Mattoso, N.
    Schreiner, W. H.
    Mosca, D. H.
    [J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2010, 22 (21)
  • [2] Ferromagnetism in Zn-doped CeO2 Induced by Oxygen Vacancies
    Santos, T. S.
    Macedo, M. A.
    [J]. JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, 2013, 26 (07) : 2541 - 2543
  • [3] Ferromagnetism in Zn-doped CeO2 Induced by Oxygen Vacancies
    T. S. Santos
    M. A. Macêdo
    [J]. Journal of Superconductivity and Novel Magnetism, 2013, 26 : 2541 - 2543
  • [4] Roles of Oxygen Vacancies in CeO2 Nanostructures for Catalytic Aerobic Cyclohexane Oxidation
    Li, Yingwei
    Li, Hao
    Li, Kexin
    Wang, Ruirui
    Zhang, Ruirui
    Liu, Ruixia
    [J]. ACS APPLIED NANO MATERIALS, 2023, 6 (15) : 14214 - 14227
  • [5] CeO2 Nanostructures Enriched with Oxygen Vacancies for Photocatalytic CO2 Reduction
    Hezam, Abdo
    Namratha, Keerthiraj
    Drmosh, Q. A.
    Ponnamma, Deepalekshmi
    Wang, Jingwei
    Prasad, Suchitra
    Ahamed, Momin
    Cheng, Chun
    Byrappa, Kullaiah
    [J]. ACS APPLIED NANO MATERIALS, 2020, 3 (01) : 138 - 148
  • [6] Size dependent oxygen chemistry of CeO2 nanoparticles
    Kullgren, Jolla
    Du, Dou
    Hermansson, Kersti
    Broqvist, Peter
    [J]. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2019, 258
  • [7] Effects of oxygen vacancies on the room-temperature ferromagnetism of Co-doped polycrystalline CeO2
    Wen, Qi-Ye
    Zhang, Huai-Wu
    Yang, Qing-Hui
    Song, Yuan-Qiang
    Xiao, John Q.
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2009, 321 (19) : 3110 - 3113
  • [8] Oxygen adatoms and vacancies on the (110) surface of CeO2
    Huang JingLu
    Yu YunBo
    Zhu Jing
    Yu Rong
    [J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES, 2018, 61 (01) : 135 - 139
  • [9] Oxygen adatoms and vacancies on the（110） surface of CeO2
    HUANG JingLu
    YU YunBo
    ZHU Jing
    YU Rong
    [J]. Science China Technological Sciences, 2018, (01) : 135 - 139
  • [10] Oxygen adatoms and vacancies on the (110) surface of CeO2
    JingLu Huang
    YunBo Yu
    Jing Zhu
    Rong Yu
    [J]. Science China Technological Sciences, 2018, 61 : 135 - 139
12345