The irradiation effects of Gd2Hf2O7 and Gd2Ti2O7

被引：23
|
作者：
Li, Y. H. [1 ,2 ]
Wen, J. [1 ]
Wang, Y. Q. [2 ]
Wang, Z. G. [3 ]
Tang, M. [2 ]
Valdez, J. A. [2 ]
Sickafus, K. E. [2 ]
机构：
[1] Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China
[2] Los Alamos Natl Lab, Mat Sci & Technol Div, Los Alamos, NM 87545 USA
[3] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2012年 / 287卷
基金：
中国国家自然科学基金;
关键词：
Gd2Ti2O7; Gd2Hf2O7; Ion irradiation effects; HEAVY-ION IRRADIATION; RADIATION TOLERANCE; INDUCED AMORPHIZATION; PYROCHLORE; A(2)B(2)O(7); FLUORITE; LA2ZR2O7; BOND;
D O I：
10.1016/j.nimb.2012.06.003
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
In this report, we present dramatically different behavior between isostructural Gd2Hf2O7 and Gd2Ti2O7 pyrochlore using 400 keV Ne2+ irradiation under cryogenic conditions (similar to 77 K), in which the lattice volume of the irradiated layer of Gd2Ti2O7 increased with ion fluence up to 1 x 10(15) ions/cm(2), whereas, the lattice volume of the irradiated layer of Gd2Hf2O7 decreased with increasing fluence from 1 x 10(15) to 6 x 10(16) ions/cm(2). The cation radius ratio r(A)/r(B), the bond-type of A-O and B-O bonds, the order-to-disorder transition energy of Gd2Hf2O7 and Gd2Ti2O7, temperature-composition (T-C) phase diagrams of HfO2-Gd2O3 and TiO2-Gd2O3 mixtures were used to explain the response of Gd2Hf2O7 and Gd2Ti2O7 to ion irradiation-induced structure transformation. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：130 / 134
页数：5
相关论文
共 50 条
  • [31] Magnetic resonance in the pyrochlore antiferromagnet Gd2Ti2O7
    Sosin, S. S.
    Smirnov, A. I.
    Prozorova, L. A.
    Balakrishnan, G.
    Zhitomirsky, M. E.
    PHYSICAL REVIEW B, 2006, 73 (21)
  • [32] Phase stability and pressure dependence of defect formation in Gd2Ti2O7 and Gd2Zr2O7 pyrochlores
    Zhang, F. X.
    Wang, J. W.
    Lian, J.
    Lang, M. K.
    Becker, U.
    Ewing, R. C.
    PHYSICAL REVIEW LETTERS, 2008, 100 (04)
  • [33] Scintillation Properties of Ti- and Zr-doped Gd2Hf2O7 Crystals
    Nakauchi, Daisuke
    Kato, Takumi
    Kawaguchi, Noriaki
    Yanagida, Takayuki
    SENSORS AND MATERIALS, 2020, 32 (04) : 1389 - 1394
  • [34] Effects of cation disorder on oxygen vacancy migration in Gd2Ti2O7
    Williford, RE
    Weber, WJ
    Devanathan, R
    Gale, JD
    JOURNAL OF ELECTROCERAMICS, 1999, 3 (04) : 409 - 424
  • [35] Effects of Cation Disorder on Oxygen Vacancy Migration in Gd2Ti2O7
    R.E. Williford
    W.J. Weber
    R. Devanathan
    J.D. Gale
    Journal of Electroceramics, 1999, 3 : 409 - 424
  • [36] Molecular dynamics study of self-radiation damage in Gd2Zr2O7 and Gd2Ti2O7 pyrochlores
    Urusov, V. S.
    Grechanovsky, A. E.
    Eremin, N. N.
    DOKLADY PHYSICS, 2014, 59 (06) : 263 - 266
  • [37] Molecular dynamics study of self-radiation damage in Gd2Zr2O7 and Gd2Ti2O7 pyrochlores
    V. S. Urusov
    A. E. Grechanovsky
    N. N. Eremin
    Doklady Physics, 2014, 59 : 263 - 266
  • [38] Phase Separation in the Heisenberg Spin System, Gd2Ti2O7
    Gardner, J. S.
    Stewart, J. R.
    Ehlers, G.
    NEUTRON AND X-RAY SCATTERING ADVANCING MATERIALS RESEARCH, 2009, 1202 : 3 - +
  • [39] Irradiation damage in Gd2Ti2O7 single crystals: Ballistic versus ionization processes
    Moll, S.
    Sattonnay, G.
    Thome, L.
    Jagielski, J.
    Decorse, C.
    Simon, P.
    Monnet, I.
    Weber, W. J.
    PHYSICAL REVIEW B, 2011, 84 (06):
  • [40] High-temperature heat capacity of Gd-pyrochlore (Gd2Ti2O7)
    Janssen, A.
    Poeml, P.
    Benes, O.
    Geisler, T.
    Konings, R. J. M.
    JOURNAL OF CHEMICAL THERMODYNAMICS, 2009, 41 (09): : 1049 - 1051
12345