Open AccessEffect of He2+ Ion Irradiation on the Crystal Structure of Non-stoichiometric Sm2+xZr2-xO7-x/2 (x = 0, 0.2, 0.4, 0.6)
Author(s) -
Hanghang Feng,
Qu Zhi,
Yao Sun,
Yanfeng Ji
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/678/1/012074
Subject(s) - irradiation , pyrochlore , stoichiometry , materials science , raman spectroscopy , ion , crystal structure , analytical chemistry (journal) , crystallography , diffraction , x ray crystallography , precipitation , chemistry , optics , physics , organic chemistry , chromatography , meteorology , nuclear physics , phase (matter)
In this paper, a series of non-stoichiometric Sm 2+x Zr 2-x O 7-x/2 (x=0, 0.2, 0.4, 0.6) were synthesized by chemical co-precipitation method. He 2+ ion irradiation experiments were carried out with irradiation energy of 500 KeV and irradiation flux of 5×10 16 ions/cm 2 . Effect of He 2+ ion irradiation on the crystal structure was characterized by XRD, GIXRD, and Raman spectroscopy. The XRD patterns show that all the peaks shift to lower diffraction angles and the characteristic peaks of pyrochlore structure weaken after irradiation, which suggests an expansion of the lattice and the degeneration of pyrochlore structure. Moreover, the GIXRD patterns reveal the existence of an irradiated layer on the surface of the sample.