Exsolution of monoclinic iron zirconate in Fe2O3-x oversaturated with Zr4+

被引：0
|
作者：
Wu, ML [1 ]
Shen, PY [1 ]
Gan, DS [1 ]
机构：
[1] Natl Sun Yat Sen Univ, Inst Mat Sci & Engn, Kaohsiung 80424, Taiwan
来源：
JAPAN INSTITUTE OF METALS, PROCEEDINGS, VOL 12, (JIMIC-3), PTS 1 AND 2: SOLID - SOLID PHASE TRANSFORMATIONS | 1999年
关键词：
Fe2O3-x; Zr dopant; iron zirconate; exsolution; AEM;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The ZrO2 and alpha-Fe2O3-x powders (1:7 in molar ratio) were sintered at 1200 degrees C and then annealed at 850 degrees C for 4-600 h in air. The specimens were studied by analytical electron microscopy with regard to the precipitation of iron zirconate from alpha-Fe2O3-x oversaturated with Zr4+. Fine and disk-like variants of iron zirconate (Fe:Zr similar to 1:1 in atomic ratio) were found to nucleate on habit plane (10 (1) over bar 4) of the hematite matrix. The iron zirconate possesses monoclinic crystallographic symmetry according to electron diffraction and the shape characteristics after prolonged annealing. The crystallographic relationship between hematite (H) and zirconate (Z) is determined to be [2<(11)over bar>0](H)//[010](Z); [01 (1) over bar 0](H)//[101](Z). Clustering of charge- and volume-compensating defects due to Zr4+ occupying substitutional and interstitial octahedral sites of alpha-Fe2O3-x may play a crucial role on the compound formation.
引用
收藏
页码：1405 / 1408
页数：4
相关论文
共 50 条
  • [21] The oxides of iron I Solid solution in the system Fe2O3-Fe3O4
    Sosman, RB
    Hostetter, JC
    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1916, 38 : 807 - 833
  • [22] Magnetoresistance of sintered (Fe2O3)100-x(Fe3O4)x ferrites
    Sun, AC
    Kuo, PC
    Chou, CY
    Chen, SC
    Lie, CT
    Lin, MH
    Chen, JW
    Huang, HL
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2004, 272 : 1776 - 1777
  • [23] Effect of Zr4+ doping on the oxygen stoichiometry and phase stability of SrCo0.8Fe0.2O3-δ oxygen separation membrane
    Chen, W.
    Zuo, Y. B.
    Chen, C. S.
    Winnubst, A. J. A.
    SOLID STATE IONICS, 2010, 181 (21-22) : 971 - 975
  • [24] Effect of Zr4+ Dopant on Microstructure, Densification and Thermomechanical Behaviour of ZnAl2O4 Spinel
    Haldar P.K.
    Parya T.K.
    Mukhopadhyay S.
    Mukhopadhyay, S., 1600, Springer Vieweg (69): : 44 - 49
  • [25] Interface electronic structures of BaTiO3@X nanoparticles (X=γ-Fe2O3, Fe3O4, α-Fe2O3, and Fe) investigated by XAS and XMCD
    Kim, D. H.
    Lee, H. J.
    Kim, G.
    Koo, Y. S.
    Jung, J. H.
    Shin, H. J.
    Kim, J. -Y.
    Kang, J. -S.
    PHYSICAL REVIEW B, 2009, 79 (03):
  • [26] Thermodynamics of monoclinic Fe2(SO4)3
    Majzlan, J
    Navrotsky, A
    Stevens, R
    Donaldson, M
    Woodfield, BF
    Boerio-Goates, J
    JOURNAL OF CHEMICAL THERMODYNAMICS, 2005, 37 (08): : 802 - 809
  • [27] Improvement of O2 adsorption for α-MnO2 as an oxygen reduction catalyst by Zr4+ doping
    Wang, Yicheng
    Li, Yaozong
    Lu, Zhenghang
    Wang, Wei
    RSC ADVANCES, 2018, 8 (06) : 2963 - 2970
  • [28] Selfdiffusion and point defects in iron oxides:: FeO, Fe3O4, α-Fe2O3
    Amami, B
    Addou, M
    Monty, C
    DIFFUSIONS IN MATERIALS: DIMAT2000, PTS 1 & 2, 2001, 194-1 : 1051 - 1056
  • [29] Computational study of the Zr4+ tetranuclear polymer, [Zr4(OH)8(H2O)16]8+
    Rao, Niny
    Holerca, Marian N.
    Klein, Michael L.
    Pophristic, Vojislava
    JOURNAL OF PHYSICAL CHEMISTRY A, 2007, 111 (45): : 11395 - 11399
  • [30] Dielectric properties and electrical conductivity of CaCu3Ti4O12 ceramics doped with Zr4+
    Su Yanli
    Zhang Wenqin
    JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION, 2013, 28 (02): : 343 - 346
12345